Add .gitignore to exclude all node packages and lock files

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/aac/get-seeking-byte.d.ts

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+import type { SeekResolution } from '../../work-on-seek-request';
+import type { AacSeekingHints } from './seeking-hints';
+export declare const getSeekingByteForAac: ({ time, seekingHints, }: {
+    time: number;
+    seekingHints: AacSeekingHints;
+}) => SeekResolution;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/aac/get-seeking-byte.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getSeekingByteForAac = void 0;
+const getSeekingByteForAac = ({ time, seekingHints, }) => {
+    let bestAudioSample;
+    for (const hint of seekingHints.audioSampleMap) {
+        if (hint.timeInSeconds > time) {
+            continue;
+        }
+        // Everything is a keyframe in flac, so if this sample does not cover the time, it's not a good candidate.
+        // Let's go to the next one. Exception: If we already saw the last sample, we use it so we find can at least
+        // find the closest one.
+        if (hint.timeInSeconds + hint.durationInSeconds < time &&
+            !seekingHints.lastSampleObserved) {
+            continue;
+        }
+        if (!bestAudioSample) {
+            bestAudioSample = hint;
+            continue;
+        }
+        if (bestAudioSample.timeInSeconds < hint.timeInSeconds) {
+            bestAudioSample = hint;
+        }
+    }
+    if (bestAudioSample) {
+        return {
+            type: 'do-seek',
+            byte: bestAudioSample.offset,
+            timeInSeconds: bestAudioSample.timeInSeconds,
+        };
+    }
+    return { type: 'valid-but-must-wait' };
+};
+exports.getSeekingByteForAac = getSeekingByteForAac;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/aac/parse-aac.d.ts

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+import type { ParseResult } from '../../parse-result';
+import type { ParserState } from '../../state/parser-state';
+export declare const parseAac: (state: ParserState) => Promise<ParseResult>;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/aac/parse-aac.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.parseAac = void 0;
+const aac_codecprivate_1 = require("../../aac-codecprivate");
+const convert_audio_or_video_sample_1 = require("../../convert-audio-or-video-sample");
+const register_track_1 = require("../../register-track");
+const webcodecs_timescale_1 = require("../../webcodecs-timescale");
+const parseAac = async (state) => {
+    const { iterator } = state;
+    const startOffset = iterator.counter.getOffset();
+    iterator.startReadingBits();
+    const syncWord = iterator.getBits(12);
+    if (syncWord !== 0xfff) {
+        throw new Error('Invalid syncword: ' + syncWord);
+    }
+    const id = iterator.getBits(1);
+    if (id !== 0) {
+        throw new Error('Only supporting MPEG-4 for .aac');
+    }
+    const layer = iterator.getBits(2);
+    if (layer !== 0) {
+        throw new Error('Only supporting layer 0 for .aac');
+    }
+    const protectionAbsent = iterator.getBits(1); // protection absent
+    const audioObjectType = iterator.getBits(2); // 1 = 'AAC-LC'
+    const samplingFrequencyIndex = iterator.getBits(4);
+    const sampleRate = (0, aac_codecprivate_1.getSampleRateFromSampleFrequencyIndex)(samplingFrequencyIndex);
+    iterator.getBits(1); // private bit
+    const channelConfiguration = iterator.getBits(3);
+    const codecPrivate = (0, aac_codecprivate_1.createAacCodecPrivate)({
+        audioObjectType,
+        sampleRate,
+        channelConfiguration,
+        codecPrivate: null,
+    });
+    iterator.getBits(1); // originality
+    iterator.getBits(1); // home
+    iterator.getBits(1); // copyright bit
+    iterator.getBits(1); // copy start
+    const frameLength = iterator.getBits(13); // frame length
+    iterator.getBits(11); // buffer fullness
+    iterator.getBits(2); // number of AAC frames minus 1
+    if (!protectionAbsent) {
+        iterator.getBits(16); // crc
+    }
+    iterator.stopReadingBits();
+    iterator.counter.decrement(iterator.counter.getOffset() - startOffset);
+    const data = iterator.getSlice(frameLength);
+    if (state.callbacks.tracks.getTracks().length === 0) {
+        state.mediaSection.addMediaSection({
+            start: startOffset,
+            size: state.contentLength - startOffset,
+        });
+        await (0, register_track_1.registerAudioTrack)({
+            container: 'aac',
+            track: {
+                codec: (0, aac_codecprivate_1.mapAudioObjectTypeToCodecString)(audioObjectType),
+                codecEnum: 'aac',
+                codecData: { type: 'aac-config', data: codecPrivate },
+                description: codecPrivate,
+                numberOfChannels: channelConfiguration,
+                sampleRate,
+                originalTimescale: webcodecs_timescale_1.WEBCODECS_TIMESCALE,
+                trackId: 0,
+                type: 'audio',
+                startInSeconds: 0,
+                timescale: webcodecs_timescale_1.WEBCODECS_TIMESCALE,
+                trackMediaTimeOffsetInTrackTimescale: 0,
+            },
+            registerAudioSampleCallback: state.callbacks.registerAudioSampleCallback,
+            tracks: state.callbacks.tracks,
+            logLevel: state.logLevel,
+            onAudioTrack: state.onAudioTrack,
+        });
+        state.callbacks.tracks.setIsDone(state.logLevel);
+    }
+    const duration = 1024 / sampleRate;
+    const { index } = state.aac.addSample({ offset: startOffset, size: frameLength });
+    const timestamp = (1024 / sampleRate) * index;
+    state.aac.audioSamples.addSample({
+        timeInSeconds: timestamp,
+        offset: startOffset,
+        durationInSeconds: duration,
+    });
+    // One ADTS frame contains 1024 samples
+    const audioSample = (0, convert_audio_or_video_sample_1.convertAudioOrVideoSampleToWebCodecsTimestamps)({
+        sample: {
+            duration,
+            type: 'key',
+            data,
+            offset: startOffset,
+            decodingTimestamp: timestamp,
+            timestamp,
+        },
+        timescale: 1,
+    });
+    await state.callbacks.onAudioSample({
+        audioSample,
+        trackId: 0,
+    });
+    return Promise.resolve(null);
+};
+exports.parseAac = parseAac;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/aac/seeking-hints.d.ts

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+import type { AacState } from '../../state/aac-state';
+import type { AudioSampleOffset } from '../../state/audio-sample-map';
+import type { SamplesObservedState } from '../../state/samples-observed/slow-duration-fps';
+export type AacSeekingHints = {
+    type: 'aac-seeking-hints';
+    audioSampleMap: AudioSampleOffset[];
+    lastSampleObserved: boolean;
+};
+export declare const getSeekingHintsForAac: ({ aacState, samplesObserved, }: {
+    aacState: AacState;
+    samplesObserved: SamplesObservedState;
+}) => AacSeekingHints;
+export declare const setSeekingHintsForAac: () => void;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/aac/seeking-hints.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.setSeekingHintsForAac = exports.getSeekingHintsForAac = void 0;
+const getSeekingHintsForAac = ({ aacState, samplesObserved, }) => {
+    return {
+        type: 'aac-seeking-hints',
+        audioSampleMap: aacState.audioSamples.getSamples(),
+        lastSampleObserved: samplesObserved.getLastSampleObserved(),
+    };
+};
+exports.getSeekingHintsForAac = getSeekingHintsForAac;
+// TODO: Implement this and maintain index
+const setSeekingHintsForAac = () => { };
+exports.setSeekingHintsForAac = setSeekingHintsForAac;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/aac/types.d.ts

@@ -0,0 +1,4 @@
+export type AacStructure = {
+    type: 'aac';
+    boxes: never[];
+};

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/aac/types.js

@@ -0,0 +1,2 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/avc/codec-string.d.ts

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+import type { AvcProfileInfo } from './parse-avc';
+export declare const getCodecStringFromSpsAndPps: (sps: AvcProfileInfo) => string;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/avc/codec-string.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getCodecStringFromSpsAndPps = void 0;
+const getCodecStringFromSpsAndPps = (sps) => {
+    return `avc1.${sps.spsData.profile.toString(16).padStart(2, '0')}${sps.spsData.compatibility.toString(16).padStart(2, '0')}${sps.spsData.level.toString(16).padStart(2, '0')}`;
+};
+exports.getCodecStringFromSpsAndPps = getCodecStringFromSpsAndPps;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/avc/color.d.ts

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+export type MediaParserMatrixCoefficients = 'rgb' | 'bt709' | 'bt470bg' | 'smpte170m' | 'bt2020-ncl';
+export declare const getMatrixCoefficientsFromIndex: (index: number) => MediaParserMatrixCoefficients | null;
+export type MediaParserTransferCharacteristics = 'bt709' | 'smpte170m' | 'iec61966-2-1' | 'linear' | 'pq' | 'hlg';
+export declare const getTransferCharacteristicsFromIndex: (index: number) => MediaParserTransferCharacteristics | null;
+export type MediaParserPrimaries = 'bt709' | 'bt470bg' | 'smpte170m' | 'bt2020' | 'smpte432' | null;
+export declare const getPrimariesFromIndex: (index: number) => MediaParserPrimaries | null;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/avc/color.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getPrimariesFromIndex = exports.getTransferCharacteristicsFromIndex = exports.getMatrixCoefficientsFromIndex = void 0;
+const getMatrixCoefficientsFromIndex = (index) => {
+    if (index === 0) {
+        return 'rgb';
+    }
+    if (index === 1) {
+        return 'bt709';
+    }
+    if (index === 5) {
+        return 'bt470bg';
+    }
+    if (index === 6) {
+        return 'smpte170m';
+    }
+    if (index === 9) {
+        return 'bt2020-ncl';
+    }
+    return null;
+};
+exports.getMatrixCoefficientsFromIndex = getMatrixCoefficientsFromIndex;
+// https://w3c.github.io/webcodecs/#videotransfercharacteristics
+// But we may support more than that
+const getTransferCharacteristicsFromIndex = (index) => {
+    if (index === 1) {
+        return 'bt709';
+    }
+    if (index === 6) {
+        return 'smpte170m';
+    }
+    if (index === 8) {
+        return 'linear';
+    }
+    if (index === 13) {
+        return 'iec61966-2-1';
+    }
+    if (index === 16) {
+        return 'pq';
+    }
+    if (index === 18) {
+        return 'hlg';
+    }
+    return null;
+};
+exports.getTransferCharacteristicsFromIndex = getTransferCharacteristicsFromIndex;
+const getPrimariesFromIndex = (index) => {
+    if (index === 1) {
+        return 'bt709';
+    }
+    if (index === 5) {
+        return 'bt470bg';
+    }
+    if (index === 6) {
+        return 'smpte170m';
+    }
+    if (index === 9) {
+        return 'bt2020';
+    }
+    if (index === 12) {
+        return 'smpte432';
+    }
+    return null;
+};
+exports.getPrimariesFromIndex = getPrimariesFromIndex;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/avc/create-sps-pps-data.d.ts

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+import type { SpsAndPps } from '../../state/parser-state';
+export declare const createSpsPpsData: (avc1Profile: SpsAndPps) => Uint8Array<ArrayBufferLike>;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/avc/create-sps-pps-data.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.createSpsPpsData = void 0;
+const combine_uint8_arrays_1 = require("../../combine-uint8-arrays");
+const truthy_1 = require("../../truthy");
+function serializeUint16(value) {
+    const buffer = new ArrayBuffer(2);
+    const view = new DataView(buffer);
+    view.setUint16(0, value);
+    return new Uint8Array(buffer);
+}
+const createSpsPpsData = (avc1Profile) => {
+    return (0, combine_uint8_arrays_1.combineUint8Arrays)([
+        new Uint8Array([
+            // https://gist.github.com/uupaa/8493378ec15f644a3d2b
+            1, // version
+            avc1Profile.sps.spsData.profile,
+            avc1Profile.sps.spsData.compatibility,
+            avc1Profile.sps.spsData.level,
+            0xff,
+            0xe1,
+        ]),
+        // sequence parameter set length
+        serializeUint16(avc1Profile.sps.sps.length),
+        // sequence parameter set
+        avc1Profile.sps.sps,
+        // num of PPS
+        new Uint8Array([0x01]),
+        // picture parameter set length
+        serializeUint16(avc1Profile.pps.pps.length),
+        // PPS
+        avc1Profile.pps.pps,
+        // if AVCProfileIndication != 66 && AVCProfileIndication != 77 && AVCProfileIndication != 88
+        [66, 77, 88].some((b) => avc1Profile.sps.spsData.profile === b)
+            ? null
+            : /**
+             *  reserved	63 (0x3F)
+                    chroma_format	1, '4:2:0'
+                    reserved	31 (0x1F)
+                    bit_depth_luma_minus8	0
+                    reserved	31 (0x1F)
+                    bit_depth_chroma_minus8	0
+                    numOfSequenceParameterSetExt	0
+             */
+                new Uint8Array([0xfd, 0xf8, 0xf8, 0]),
+    ].filter(truthy_1.truthy));
+};
+exports.createSpsPpsData = createSpsPpsData;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/avc/interpret-sps.d.ts

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+import type { MediaParserAdvancedColor } from '../../get-tracks';
+import type { SpsInfo } from './parse-avc';
+export declare const getDimensionsFromSps: (sps: SpsInfo) => {
+    height: number;
+    width: number;
+};
+export declare const getSampleAspectRatioFromSps: (sps: SpsInfo) => {
+    width: number;
+    height: number;
+};
+export declare const getVideoColorFromSps: (sps: SpsInfo) => MediaParserAdvancedColor;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/avc/interpret-sps.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getVideoColorFromSps = exports.getSampleAspectRatioFromSps = exports.getDimensionsFromSps = void 0;
+const color_1 = require("./color");
+const getDimensionsFromSps = (sps) => {
+    var _a, _b, _c, _d;
+    const height = sps.pic_height_in_map_units_minus1;
+    const width = sps.pic_width_in_mbs_minus1;
+    // https://stackoverflow.com/questions/12018535/get-the-width-height-of-the-video-from-h-264-nalu
+    return {
+        height: (height + 1) * 16 -
+            ((_a = sps.frame_crop_bottom_offset) !== null && _a !== void 0 ? _a : 0) * 2 -
+            ((_b = sps.frame_crop_top_offset) !== null && _b !== void 0 ? _b : 0) * 2,
+        width: (width + 1) * 16 -
+            ((_c = sps.frame_crop_right_offset) !== null && _c !== void 0 ? _c : 0) * 2 -
+            ((_d = sps.frame_crop_left_offset) !== null && _d !== void 0 ? _d : 0) * 2,
+    };
+};
+exports.getDimensionsFromSps = getDimensionsFromSps;
+const getSampleAspectRatioFromSps = (sps) => {
+    var _a;
+    if (((_a = sps.vui_parameters) === null || _a === void 0 ? void 0 : _a.sar_height) && sps.vui_parameters.sar_width) {
+        return {
+            width: sps.vui_parameters.sar_width,
+            height: sps.vui_parameters.sar_height,
+        };
+    }
+    return {
+        width: 1,
+        height: 1,
+    };
+};
+exports.getSampleAspectRatioFromSps = getSampleAspectRatioFromSps;
+const getVideoColorFromSps = (sps) => {
+    var _a, _b, _c, _d, _e;
+    const matrixCoefficients = (_a = sps.vui_parameters) === null || _a === void 0 ? void 0 : _a.matrix_coefficients;
+    const transferCharacteristics = (_b = sps.vui_parameters) === null || _b === void 0 ? void 0 : _b.transfer_characteristics;
+    const colorPrimaries = (_c = sps.vui_parameters) === null || _c === void 0 ? void 0 : _c.colour_primaries;
+    return {
+        matrix: matrixCoefficients
+            ? (0, color_1.getMatrixCoefficientsFromIndex)(matrixCoefficients)
+            : null,
+        transfer: transferCharacteristics
+            ? (0, color_1.getTransferCharacteristicsFromIndex)(transferCharacteristics)
+            : null,
+        primaries: colorPrimaries ? (0, color_1.getPrimariesFromIndex)(colorPrimaries) : null,
+        fullRange: (_e = (_d = sps.vui_parameters) === null || _d === void 0 ? void 0 : _d.video_full_range_flag) !== null && _e !== void 0 ? _e : null,
+    };
+};
+exports.getVideoColorFromSps = getVideoColorFromSps;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/avc/key.d.ts

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+import type { AvcInfo } from './parse-avc';
+export declare const getKeyFrameOrDeltaFromAvcInfo: (infos: AvcInfo[]) => "key" | "delta" | "bidirectional";

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/avc/key.js

@@ -0,0 +1,15 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getKeyFrameOrDeltaFromAvcInfo = void 0;
+const getKeyFrameOrDeltaFromAvcInfo = (infos) => {
+    const keyOrDelta = infos.find((i) => i.type === 'keyframe' || i.type === 'delta-frame');
+    if (!keyOrDelta) {
+        throw new Error('expected avc to contain info about key or delta');
+    }
+    return keyOrDelta.type === 'keyframe'
+        ? 'key'
+        : keyOrDelta.isBidirectionalFrame
+            ? 'bidirectional'
+            : 'delta';
+};
+exports.getKeyFrameOrDeltaFromAvcInfo = getKeyFrameOrDeltaFromAvcInfo;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/avc/max-buffer-size.d.ts

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+import type { SpsInfo } from './parse-avc';
+export declare const macroBlocksPerFrame: (sps: SpsInfo) => number;
+export declare const maxMacroblockBufferSize: (sps: SpsInfo) => number;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/avc/max-buffer-size.js

@@ -0,0 +1,40 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.maxMacroblockBufferSize = exports.macroBlocksPerFrame = void 0;
+// https://www.itu.int/rec/T-REC-H.264-202408-I
+// Table A-1 – Level limits
+const maxMacroblocksByLevel = {
+    10: 396, // Level 1.0
+    11: 900, // Level 1.1
+    12: 2376, // Level 1.2
+    13: 2376, // Level 1.3
+    20: 2376, // Level 2.0
+    21: 4752, // Level 2.1
+    22: 8100, // Level 2.2
+    30: 8100, // Level 3.0
+    31: 18000, // Level 3.1
+    32: 20480, // Level 3.2
+    40: 32768, // Level 4.0
+    41: 32768, // Level 4.1
+    42: 34816, // Level 4.2
+    50: 110400, // Level 5.0
+    51: 184320, // Level 5.1
+    52: 184320, // Level 5.2
+    60: 696320, // Level 6.0
+    61: 696320, // Level 6.1
+    62: 696320, // Level 6.2
+};
+const macroBlocksPerFrame = (sps) => {
+    const { pic_width_in_mbs_minus1, pic_height_in_map_units_minus1 } = sps;
+    return (pic_width_in_mbs_minus1 + 1) * (pic_height_in_map_units_minus1 + 1);
+};
+exports.macroBlocksPerFrame = macroBlocksPerFrame;
+const maxMacroblockBufferSize = (sps) => {
+    const { level } = sps;
+    const maxMacroblocks = maxMacroblocksByLevel[level];
+    if (maxMacroblocks === undefined) {
+        throw new Error(`Unsupported level: ${level.toString(16)}`);
+    }
+    return maxMacroblocks;
+};
+exports.maxMacroblockBufferSize = maxMacroblockBufferSize;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/avc/parse-avc.d.ts

@@ -0,0 +1,50 @@
+import type { AvcState } from '../../state/avc/avc-state';
+import type { MediaParserAvcDeltaFrameInfo, MediaParserAvcKeyframeInfo } from '../../webcodec-sample-types';
+type VuiParameters = {
+    sar_width: number | null;
+    sar_height: number | null;
+    overscan_appropriate_flag: number | null;
+    video_format: number | null;
+    video_full_range_flag: boolean | null;
+    colour_primaries: number | null;
+    transfer_characteristics: number | null;
+    matrix_coefficients: number | null;
+    chroma_sample_loc_type_top_field: number | null;
+    chroma_sample_loc_type_bottom_field: number | null;
+};
+export type SpsInfo = {
+    profile: number;
+    compatibility: number;
+    level: number;
+    seq_parameter_set_id: number;
+    separate_colour_plane_flag: number | null;
+    bit_depth_luma_minus8: number | null;
+    bit_depth_chroma_minus8: number | null;
+    qpprime_y_zero_transform_bypass_flag: number | null;
+    log2_max_frame_num_minus4: number;
+    log2_max_pic_order_cnt_lsb_minus4: number | null;
+    max_num_ref_frames: number | null;
+    gaps_in_frame_num_value_allowed_flag: number | null;
+    pic_width_in_mbs_minus1: number;
+    pic_height_in_map_units_minus1: number;
+    mb_adaptive_frame_field_flag: number | null;
+    direct_8x8_inference_flag: number | null;
+    frame_crop_left_offset: number | null;
+    frame_crop_right_offset: number | null;
+    frame_crop_top_offset: number | null;
+    frame_crop_bottom_offset: number | null;
+    vui_parameters: VuiParameters | null;
+    pic_order_cnt_type: number;
+};
+export type AvcProfileInfo = {
+    spsData: SpsInfo;
+    sps: Uint8Array;
+    type: 'avc-profile';
+};
+export type AvcPPs = {
+    type: 'avc-pps';
+    pps: Uint8Array;
+};
+export type AvcInfo = AvcProfileInfo | AvcPPs | MediaParserAvcKeyframeInfo | MediaParserAvcDeltaFrameInfo;
+export declare const parseAvc: (buffer: Uint8Array, avcState: AvcState) => AvcInfo[];
+export {};

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/avc/parse-avc.js

@@ -0,0 +1,332 @@
+"use strict";
+// https://www.itu.int/rec/T-REC-H.264-202408-I/en
+// Page 455
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.parseAvc = void 0;
+const buffer_iterator_1 = require("../../iterator/buffer-iterator");
+const Extended_SAR = 255;
+const getPoc = (iterator, sps, avcState, isReferencePicture) => {
+    const { pic_order_cnt_type, log2_max_pic_order_cnt_lsb_minus4 } = sps;
+    if (pic_order_cnt_type !== 0) {
+        return null;
+    }
+    const prevPicOrderCntLsb = avcState.getPrevPicOrderCntLsb();
+    const prevPicOrderCntMsb = avcState.getPrevPicOrderCntMsb();
+    if (log2_max_pic_order_cnt_lsb_minus4 === null) {
+        throw new Error('log2_max_pic_order_cnt_lsb_minus4 is null');
+    }
+    const max_pic_order_cnt_lsb = 2 ** (log2_max_pic_order_cnt_lsb_minus4 + 4);
+    const pic_order_cnt_lsb = iterator.getBits(log2_max_pic_order_cnt_lsb_minus4 + 4);
+    let picOrderCntMsb;
+    if (pic_order_cnt_lsb < prevPicOrderCntLsb &&
+        prevPicOrderCntLsb - pic_order_cnt_lsb >= max_pic_order_cnt_lsb / 2) {
+        picOrderCntMsb = prevPicOrderCntMsb + max_pic_order_cnt_lsb;
+    }
+    else if (pic_order_cnt_lsb > prevPicOrderCntLsb &&
+        pic_order_cnt_lsb - prevPicOrderCntLsb > max_pic_order_cnt_lsb / 2) {
+        picOrderCntMsb = prevPicOrderCntMsb - max_pic_order_cnt_lsb;
+    }
+    else {
+        picOrderCntMsb = prevPicOrderCntMsb;
+    }
+    const poc = picOrderCntMsb + pic_order_cnt_lsb;
+    if (isReferencePicture) {
+        avcState.setPrevPicOrderCntLsb(pic_order_cnt_lsb);
+        avcState.setPrevPicOrderCntMsb(picOrderCntMsb);
+    }
+    return poc;
+};
+const readVuiParameters = (iterator) => {
+    let sar_width = null;
+    let sar_height = null;
+    let overscan_appropriate_flag = null;
+    let video_format = null;
+    let video_full_range_flag = null;
+    let colour_primaries = null;
+    let transfer_characteristics = null;
+    let matrix_coefficients = null;
+    let chroma_sample_loc_type_top_field = null;
+    let chroma_sample_loc_type_bottom_field = null;
+    const aspect_ratio_info_present_flag = iterator.getBits(1);
+    if (aspect_ratio_info_present_flag) {
+        const aspect_ratio_idc = iterator.getBits(8);
+        if (aspect_ratio_idc === Extended_SAR) {
+            sar_width = iterator.getBits(16);
+            sar_height = iterator.getBits(16);
+        }
+    }
+    const overscan_info_present_flag = iterator.getBits(1);
+    if (overscan_info_present_flag) {
+        overscan_appropriate_flag = iterator.getBits(1);
+    }
+    const video_signal_type_present_flag = iterator.getBits(1);
+    if (video_signal_type_present_flag) {
+        video_format = iterator.getBits(3);
+        video_full_range_flag = Boolean(iterator.getBits(1));
+        const colour_description_present_flag = iterator.getBits(1);
+        if (colour_description_present_flag) {
+            colour_primaries = iterator.getBits(8);
+            transfer_characteristics = iterator.getBits(8);
+            matrix_coefficients = iterator.getBits(8);
+        }
+    }
+    const chroma_loc_info_present_flag = iterator.getBits(1);
+    if (chroma_loc_info_present_flag) {
+        chroma_sample_loc_type_top_field = iterator.readExpGolomb();
+        chroma_sample_loc_type_bottom_field = iterator.readExpGolomb();
+    }
+    return {
+        sar_width,
+        sar_height,
+        overscan_appropriate_flag,
+        chroma_sample_loc_type_bottom_field,
+        chroma_sample_loc_type_top_field,
+        colour_primaries,
+        matrix_coefficients,
+        transfer_characteristics,
+        video_format,
+        video_full_range_flag,
+    };
+};
+const readSps = (iterator) => {
+    const profile = iterator.getUint8();
+    const compatibility = iterator.getUint8();
+    const level = iterator.getUint8();
+    iterator.startReadingBits();
+    const seq_parameter_set_id = iterator.readExpGolomb();
+    let separate_colour_plane_flag = null;
+    let bit_depth_luma_minus8 = null;
+    let bit_depth_chroma_minus8 = null;
+    let qpprime_y_zero_transform_bypass_flag = null;
+    let log2_max_frame_num_minus4 = null;
+    let log2_max_pic_order_cnt_lsb_minus4 = null;
+    let max_num_ref_frames = null;
+    let gaps_in_frame_num_value_allowed_flag = null;
+    let mb_adaptive_frame_field_flag = null;
+    let direct_8x8_inference_flag = null;
+    let frame_crop_left_offset = null;
+    let frame_crop_right_offset = null;
+    let frame_crop_top_offset = null;
+    let frame_crop_bottom_offset = null;
+    let vui_parameters = null;
+    // Page 71
+    if (profile === 100 ||
+        profile === 110 ||
+        profile === 122 ||
+        profile === 244 ||
+        profile === 44 ||
+        profile === 83 ||
+        profile === 86 ||
+        profile === 118 ||
+        profile === 128 ||
+        profile === 138 ||
+        profile === 139 ||
+        profile === 134 ||
+        profile === 135) {
+        const chromaFormat = iterator.readExpGolomb();
+        if (chromaFormat === 3) {
+            separate_colour_plane_flag = iterator.getBits(1);
+        }
+        bit_depth_luma_minus8 = iterator.readExpGolomb();
+        bit_depth_chroma_minus8 = iterator.readExpGolomb();
+        qpprime_y_zero_transform_bypass_flag = iterator.getBits(1);
+        const seq_scaling_matrix_present_flag = iterator.getBits(1);
+        const seq_scaling_list_present_flag = [];
+        if (seq_scaling_matrix_present_flag) {
+            for (let i = 0; i < (chromaFormat !== 3 ? 8 : 12); i++) {
+                seq_scaling_list_present_flag[i] = iterator.getBits(1);
+                if (seq_scaling_list_present_flag[i]) {
+                    if (i < 6) {
+                        // scaling_list not implemented
+                        throw new Error('Not implemented');
+                    }
+                    else {
+                        // scaling_list not implemented
+                        throw new Error('Not implemented');
+                    }
+                }
+            }
+        }
+    }
+    log2_max_frame_num_minus4 = iterator.readExpGolomb();
+    const pic_order_cnt_type = iterator.readExpGolomb();
+    if (pic_order_cnt_type === 0) {
+        log2_max_pic_order_cnt_lsb_minus4 = iterator.readExpGolomb();
+    }
+    else if (pic_order_cnt_type === 1) {
+        throw new Error('pic_order_cnt_type = 1 not implemented');
+    }
+    max_num_ref_frames = iterator.readExpGolomb();
+    gaps_in_frame_num_value_allowed_flag = iterator.getBits(1);
+    const pic_width_in_mbs_minus1 = iterator.readExpGolomb();
+    const pic_height_in_map_units_minus1 = iterator.readExpGolomb();
+    const frame_mbs_only_flag = iterator.getBits(1);
+    if (!frame_mbs_only_flag) {
+        mb_adaptive_frame_field_flag = iterator.getBits(1);
+    }
+    direct_8x8_inference_flag = iterator.getBits(1);
+    const frame_cropping_flag = iterator.getBits(1);
+    if (frame_cropping_flag) {
+        frame_crop_left_offset = iterator.readExpGolomb();
+        frame_crop_right_offset = iterator.readExpGolomb();
+        frame_crop_top_offset = iterator.readExpGolomb();
+        frame_crop_bottom_offset = iterator.readExpGolomb();
+    }
+    const vui_parameters_present_flag = iterator.getBits(1);
+    if (vui_parameters_present_flag) {
+        vui_parameters = readVuiParameters(iterator);
+    }
+    iterator.stopReadingBits();
+    return {
+        profile,
+        compatibility,
+        level,
+        bit_depth_chroma_minus8,
+        bit_depth_luma_minus8,
+        gaps_in_frame_num_value_allowed_flag,
+        log2_max_frame_num_minus4,
+        log2_max_pic_order_cnt_lsb_minus4,
+        max_num_ref_frames,
+        pic_height_in_map_units_minus1,
+        pic_width_in_mbs_minus1,
+        qpprime_y_zero_transform_bypass_flag,
+        separate_colour_plane_flag,
+        seq_parameter_set_id,
+        direct_8x8_inference_flag,
+        frame_crop_bottom_offset,
+        frame_crop_left_offset,
+        frame_crop_right_offset,
+        frame_crop_top_offset,
+        mb_adaptive_frame_field_flag,
+        vui_parameters,
+        pic_order_cnt_type,
+    };
+};
+const findEnd = (buffer) => {
+    let zeroesInARow = 0;
+    for (let i = 0; i < buffer.length; i++) {
+        const val = buffer[i];
+        if (val === 0) {
+            zeroesInARow++;
+            continue;
+        }
+        if (zeroesInARow >= 2 && val === 1) {
+            return i - zeroesInARow;
+        }
+        zeroesInARow = 0;
+    }
+    return null;
+};
+const inspect = (buffer, avcState) => {
+    const iterator = (0, buffer_iterator_1.getArrayBufferIterator)({
+        initialData: buffer,
+        maxBytes: buffer.byteLength,
+        logLevel: 'error',
+    });
+    iterator.startReadingBits();
+    iterator.getBits(1); // forbidden_zero_bit
+    const nal_ref_idc = iterator.getBits(2); // nal_ref_idc
+    const isReferencePicture = nal_ref_idc !== 0;
+    const type = iterator.getBits(5); // nal_unit_type
+    if (type === 7) {
+        iterator.stopReadingBits();
+        const end = findEnd(buffer);
+        const data = readSps(iterator);
+        const sps = buffer.slice(0, end === null ? Infinity : end);
+        avcState.setSps(data);
+        if (isReferencePicture) {
+            avcState.setPrevPicOrderCntLsb(0);
+            avcState.setPrevPicOrderCntMsb(0);
+        }
+        return {
+            spsData: data,
+            sps,
+            type: 'avc-profile',
+        };
+    }
+    if (type === 5) {
+        avcState.setPrevPicOrderCntLsb(0);
+        avcState.setPrevPicOrderCntMsb(0);
+        iterator.readExpGolomb(); // ignore first_mb_in_slice
+        iterator.readExpGolomb(); // slice_type
+        iterator.readExpGolomb(); // pic_parameter_set_id
+        const sps = avcState.getSps();
+        if (!sps) {
+            throw new Error('SPS not found');
+        }
+        const numberOfBitsForFrameNum = sps.log2_max_frame_num_minus4 + 4;
+        iterator.getBits(numberOfBitsForFrameNum); // frame_num
+        iterator.readExpGolomb(); // idr_pic_id
+        const { pic_order_cnt_type } = sps;
+        let poc = null;
+        if (pic_order_cnt_type === 0) {
+            poc = getPoc(iterator, sps, avcState, isReferencePicture);
+        }
+        iterator.stopReadingBits();
+        return {
+            type: 'keyframe',
+            poc,
+        };
+    }
+    if (type === 8) {
+        iterator.stopReadingBits();
+        const end = findEnd(buffer);
+        const pps = buffer.slice(0, end === null ? Infinity : end);
+        return {
+            type: 'avc-pps',
+            pps,
+        };
+    }
+    if (type === 1) {
+        iterator.readExpGolomb(); // ignore first_mb_in_slice
+        const slice_type = iterator.readExpGolomb();
+        const isBidirectionalFrame = slice_type === 6;
+        iterator.readExpGolomb(); // pic_parameter_set_id
+        const sps = avcState.getSps();
+        if (!sps) {
+            throw new Error('SPS not found');
+        }
+        const numberOfBitsForFrameNum = sps.log2_max_frame_num_minus4 + 4;
+        iterator.getBits(numberOfBitsForFrameNum); // frame_num
+        const { pic_order_cnt_type } = sps;
+        let poc = null;
+        if (pic_order_cnt_type === 0) {
+            poc = getPoc(iterator, sps, avcState, isReferencePicture);
+        }
+        iterator.stopReadingBits();
+        return {
+            type: 'delta-frame',
+            isBidirectionalFrame,
+            poc,
+        };
+    }
+    iterator.destroy();
+    return null;
+};
+// https://stackoverflow.com/questions/24884827/possible-locations-for-sequence-picture-parameter-sets-for-h-264-stream
+const parseAvc = (buffer, avcState) => {
+    let zeroesInARow = 0;
+    const infos = [];
+    for (let i = 0; i < buffer.length; i++) {
+        const val = buffer[i];
+        if (val === 0) {
+            zeroesInARow++;
+            continue;
+        }
+        if (zeroesInARow >= 2 && val === 1) {
+            zeroesInARow = 0;
+            const info = inspect(buffer.slice(i + 1, i + 100), avcState);
+            if (info) {
+                infos.push(info);
+                if (info.type === 'keyframe' || info.type === 'delta-frame') {
+                    break;
+                }
+            }
+        }
+        if (val !== 1) {
+            zeroesInARow = 0;
+        }
+    }
+    return infos;
+};
+exports.parseAvc = parseAvc;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/avc/sps-and-pps.d.ts

@@ -0,0 +1,3 @@
+import type { SpsAndPps } from '../../state/parser-state';
+import type { AvcInfo } from './parse-avc';
+export declare const getSpsAndPps: (infos: AvcInfo[]) => SpsAndPps;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/avc/sps-and-pps.js

@@ -0,0 +1,12 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getSpsAndPps = void 0;
+const getSpsAndPps = (infos) => {
+    const avcProfile = infos.find((i) => i.type === 'avc-profile');
+    const ppsProfile = infos.find((i) => i.type === 'avc-pps');
+    if (!avcProfile || !ppsProfile) {
+        throw new Error('Expected avcProfile and ppsProfile');
+    }
+    return { pps: ppsProfile, sps: avcProfile };
+};
+exports.getSpsAndPps = getSpsAndPps;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/get-block-size.d.ts

@@ -0,0 +1,2 @@
+import type { BufferIterator } from '../../iterator/buffer-iterator';
+export declare const getBlockSize: (iterator: BufferIterator) => number | "uncommon-u16" | "uncommon-u8" | null;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/get-block-size.js

@@ -0,0 +1,29 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getBlockSize = void 0;
+const getBlockSize = (iterator) => {
+    const bits = iterator.getBits(4);
+    if (bits === 0b0000) {
+        // Probably we are in the wrong spot overall, and just landed on a spot that incidentially hit the syncword.
+        // Don't throw an error, in the parent function just keep reading.
+        // Internal message with repro: https://discord.com/channels/@me/1314232261008162876/1410312296709881988
+        return null;
+    }
+    if (bits === 0b0001) {
+        return 192;
+    }
+    if (bits >= 0b0010 && bits <= 0b0101) {
+        return 144 * 2 ** bits;
+    }
+    if (bits === 0b0110) {
+        return 'uncommon-u8';
+    }
+    if (bits === 0b0111) {
+        return 'uncommon-u16';
+    }
+    if (bits >= 0b1000 && bits <= 0b1111) {
+        return 2 ** bits;
+    }
+    throw new Error('Invalid block size');
+};
+exports.getBlockSize = getBlockSize;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/get-channel-count.d.ts

@@ -0,0 +1,2 @@
+import type { BufferIterator } from '../../iterator/buffer-iterator';
+export declare const getChannelCount: (iterator: BufferIterator) => 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/get-channel-count.js

@@ -0,0 +1,42 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getChannelCount = void 0;
+// https://www.rfc-editor.org/rfc/rfc9639.html#name-channels-bits
+const getChannelCount = (iterator) => {
+    const bits = iterator.getBits(4);
+    if (bits === 0b0000) {
+        return 1;
+    }
+    if (bits === 0b0001) {
+        return 2;
+    }
+    if (bits === 0b0010) {
+        return 3;
+    }
+    if (bits === 0b0011) {
+        return 4;
+    }
+    if (bits === 0b0100) {
+        return 5;
+    }
+    if (bits === 0b0101) {
+        return 6;
+    }
+    if (bits === 0b0110) {
+        return 7;
+    }
+    if (bits === 0b0111) {
+        return 8;
+    }
+    if (bits === 0b1000 || bits === 0b1001 || bits === 0b1010) {
+        return 2;
+    }
+    // 0b1011..0b1111 are reserved per RFC 9639 §9.1.3 (Channels Bits).
+    // Some encoders/files in the wild may nonetheless use these values.
+    // Be lenient and treat them as stereo (2 channels) to keep parsing robust.
+    if (bits >= 0b1011 && bits <= 0b1111) {
+        return 2;
+    }
+    throw new Error(`Invalid channel count: ${bits.toString(2)}`);
+};
+exports.getChannelCount = getChannelCount;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/get-duration-from-flac.d.ts

@@ -0,0 +1,2 @@
+import type { ParserState } from '../../state/parser-state';
+export declare const getDurationFromFlac: (parserState: ParserState) => number;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/get-duration-from-flac.js

@@ -0,0 +1,12 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getDurationFromFlac = void 0;
+const getDurationFromFlac = (parserState) => {
+    const structure = parserState.structure.getFlacStructure();
+    const streaminfo = structure.boxes.find((b) => b.type === 'flac-streaminfo');
+    if (!streaminfo) {
+        throw new Error('Streaminfo not found');
+    }
+    return streaminfo.totalSamples / streaminfo.sampleRate;
+};
+exports.getDurationFromFlac = getDurationFromFlac;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/get-metadata-from-flac.d.ts

@@ -0,0 +1,2 @@
+import type { FlacStructure } from './types';
+export declare const getMetadataFromFlac: (structure: FlacStructure) => import("../..").MediaParserMetadataEntry[] | null;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/get-metadata-from-flac.js

@@ -0,0 +1,11 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getMetadataFromFlac = void 0;
+const getMetadataFromFlac = (structure) => {
+    const box = structure.boxes.find((b) => b.type === 'flac-vorbis-comment');
+    if (!box) {
+        return null;
+    }
+    return box.fields;
+};
+exports.getMetadataFromFlac = getMetadataFromFlac;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/get-sample-rate.d.ts

@@ -0,0 +1,3 @@
+import type { BufferIterator } from '../../iterator/buffer-iterator';
+import type { ParserState } from '../../state/parser-state';
+export declare const getSampleRate: (iterator: BufferIterator, state: ParserState) => number | "uncommon-u8" | "uncommon-u16" | "uncommon-u16-10";

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/get-sample-rate.js

@@ -0,0 +1,60 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getSampleRate = void 0;
+// https://www.rfc-editor.org/rfc/rfc9639.html#name-sample-rate-bits
+const getSampleRate = (iterator, state) => {
+    var _a, _b;
+    const mode = iterator.getBits(4);
+    if (mode === 0b0000 || mode === 0b1111) {
+        const structure = state.structure.getFlacStructure();
+        const sampleRate = (_b = (_a = structure.boxes.find((box) => box.type === 'flac-streaminfo')) === null || _a === void 0 ? void 0 : _a.sampleRate) !== null && _b !== void 0 ? _b : null;
+        if (sampleRate === null) {
+            throw new Error('Sample rate not found');
+        }
+        return sampleRate;
+    }
+    if (mode === 0b0001) {
+        return 88200;
+    }
+    if (mode === 0b0010) {
+        return 176400;
+    }
+    if (mode === 0b0011) {
+        return 192000;
+    }
+    if (mode === 0b0100) {
+        return 8000;
+    }
+    if (mode === 0b0101) {
+        return 16000;
+    }
+    if (mode === 0b0110) {
+        return 22050;
+    }
+    if (mode === 0b0111) {
+        return 24000;
+    }
+    if (mode === 0b1000) {
+        return 32000;
+    }
+    if (mode === 0b1001) {
+        return 44100;
+    }
+    if (mode === 0b1010) {
+        return 48000;
+    }
+    if (mode === 0b1011) {
+        return 96000;
+    }
+    if (mode === 0b1100) {
+        return 'uncommon-u8';
+    }
+    if (mode === 0b1101) {
+        return 'uncommon-u16';
+    }
+    if (mode === 0b1110) {
+        return 'uncommon-u16-10';
+    }
+    throw new Error(`Invalid sample rate mode: ${mode.toString(2)}`);
+};
+exports.getSampleRate = getSampleRate;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/get-seeking-byte.d.ts

@@ -0,0 +1,6 @@
+import type { AudioSampleOffset } from '../../state/audio-sample-map';
+import type { FlacSeekingHints } from './seeking-hints';
+export declare const getSeekingByteForFlac: ({ time, seekingHints, }: {
+    time: number;
+    seekingHints: FlacSeekingHints;
+}) => AudioSampleOffset | null;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/get-seeking-byte.js

@@ -0,0 +1,30 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getSeekingByteForFlac = void 0;
+const getSeekingByteForFlac = ({ time, seekingHints, }) => {
+    let bestAudioSample;
+    for (const hint of seekingHints.audioSampleMap) {
+        if (hint.timeInSeconds > time) {
+            continue;
+        }
+        // Everything is a keyframe in flac, so if this sample does not cover the time, it's not a good candidate.
+        // Let's go to the next one. Exception: If we already saw the last sample, we use it so we find can at least
+        // find the closest one.
+        if (hint.timeInSeconds + hint.durationInSeconds < time &&
+            !seekingHints.lastSampleObserved) {
+            continue;
+        }
+        if (!bestAudioSample) {
+            bestAudioSample = hint;
+            continue;
+        }
+        if (bestAudioSample.timeInSeconds < hint.timeInSeconds) {
+            bestAudioSample = hint;
+        }
+    }
+    if (bestAudioSample) {
+        return bestAudioSample;
+    }
+    return null;
+};
+exports.getSeekingByteForFlac = getSeekingByteForFlac;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/parse-flac-frame.d.ts

@@ -0,0 +1,15 @@
+import { type BufferIterator } from '../../iterator/buffer-iterator';
+import type { ParseResult } from '../../parse-result';
+import type { ParserState } from '../../state/parser-state';
+export declare const parseFrameHeader: ({ iterator, state, }: {
+    iterator: BufferIterator;
+    state: ParserState;
+}) => {
+    num: number;
+    blockSize: number;
+    sampleRate: number;
+} | null;
+export declare const parseFlacFrame: ({ state, iterator, }: {
+    state: ParserState;
+    iterator: BufferIterator;
+}) => Promise<ParseResult>;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/parse-flac-frame.js

@@ -0,0 +1,185 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.parseFlacFrame = exports.parseFrameHeader = void 0;
+const convert_audio_or_video_sample_1 = require("../../convert-audio-or-video-sample");
+const buffer_iterator_1 = require("../../iterator/buffer-iterator");
+const get_block_size_1 = require("./get-block-size");
+const get_channel_count_1 = require("./get-channel-count");
+const get_sample_rate_1 = require("./get-sample-rate");
+// https://www.rfc-editor.org/rfc/rfc9639.html#section-9.1.1
+function calculateCRC8(data) {
+    const polynomial = 0x07; // x^8 + x^2 + x^1 + x^0
+    let crc = 0x00; // Initialize CRC to 0
+    for (const byte of data) {
+        crc ^= byte; // XOR byte into least significant byte of crc
+        for (let i = 0; i < 8; i++) {
+            // For each bit in the byte
+            if ((crc & 0x80) !== 0) {
+                // If the leftmost bit (MSB) is set
+                crc = (crc << 1) ^ polynomial; // Shift left and XOR with polynomial
+            }
+            else {
+                crc <<= 1; // Just shift left
+            }
+            crc &= 0xff; // Ensure CRC remains 8-bit
+        }
+    }
+    return crc;
+}
+const parseFrameHeader = ({ iterator, state, }) => {
+    if (iterator.bytesRemaining() < 10) {
+        return null;
+    }
+    const startOffset = iterator.counter.getOffset();
+    iterator.discard(2); // sync code
+    iterator.startReadingBits();
+    const blockSizeBits = (0, get_block_size_1.getBlockSize)(iterator);
+    if (blockSizeBits === null) {
+        return null;
+    }
+    const sampleRateBits = (0, get_sample_rate_1.getSampleRate)(iterator, state);
+    (0, get_channel_count_1.getChannelCount)(iterator); // channel count
+    iterator.getBits(3); // bit depth
+    iterator.getBits(1);
+    const num = iterator.getFlacCodecNumber();
+    const blockSize = blockSizeBits === 'uncommon-u16'
+        ? iterator.getBits(16) + 1
+        : blockSizeBits === 'uncommon-u8'
+            ? iterator.getBits(8) + 1
+            : blockSizeBits;
+    const sampleRate = sampleRateBits === 'uncommon-u16'
+        ? iterator.getBits(16)
+        : sampleRateBits === 'uncommon-u16-10'
+            ? iterator.getBits(16) * 10
+            : sampleRateBits === 'uncommon-u8'
+                ? iterator.getBits(8)
+                : sampleRateBits;
+    iterator.stopReadingBits();
+    const size = iterator.counter.getOffset() - startOffset;
+    const crc = iterator.getUint8();
+    iterator.counter.decrement(size + 1);
+    const crcCalculated = calculateCRC8(iterator.getSlice(size));
+    iterator.counter.decrement(size);
+    if (crcCalculated !== crc) {
+        return null;
+    }
+    return { num, blockSize, sampleRate };
+};
+exports.parseFrameHeader = parseFrameHeader;
+const emitSample = async ({ state, data, offset, }) => {
+    const iterator = (0, buffer_iterator_1.getArrayBufferIterator)({
+        initialData: data,
+        maxBytes: data.length,
+        logLevel: 'error',
+    });
+    const parsed = (0, exports.parseFrameHeader)({ iterator, state });
+    if (!parsed) {
+        throw new Error('Invalid CRC');
+    }
+    const { blockSize, num, sampleRate } = parsed;
+    const duration = blockSize / sampleRate;
+    const structure = state.structure.getFlacStructure();
+    const streamInfo = structure.boxes.find((box) => box.type === 'flac-streaminfo');
+    if (!streamInfo) {
+        throw new Error('Stream info not found');
+    }
+    if (streamInfo.minimumBlockSize !== streamInfo.maximumBlockSize) {
+        throw new Error('Cannot determine timestamp');
+    }
+    const timestamp = (num * streamInfo.maximumBlockSize) / streamInfo.sampleRate;
+    state.flac.audioSamples.addSample({
+        timeInSeconds: timestamp,
+        offset,
+        durationInSeconds: duration,
+    });
+    const audioSample = (0, convert_audio_or_video_sample_1.convertAudioOrVideoSampleToWebCodecsTimestamps)({
+        sample: {
+            data,
+            duration,
+            decodingTimestamp: timestamp,
+            timestamp,
+            type: 'key',
+            offset,
+        },
+        timescale: 1,
+    });
+    await state.callbacks.onAudioSample({
+        audioSample,
+        trackId: 0,
+    });
+    iterator.destroy();
+};
+const parseFlacFrame = async ({ state, iterator, }) => {
+    var _a, _b;
+    const blockingBit = state.flac.getBlockingBitStrategy();
+    const offset = iterator.counter.getOffset();
+    const { returnToCheckpoint } = iterator.startCheckpoint();
+    iterator.startReadingBits();
+    if (blockingBit === undefined) {
+        const bits = iterator.getBits(15);
+        if (bits !== 0b111111111111100) {
+            throw new Error('Invalid sync code');
+        }
+        state.flac.setBlockingBitStrategy(iterator.getBits(1));
+    }
+    else if (blockingBit === 1) {
+        const bits = iterator.getBits(16);
+        if (bits !== 0b1111111111111001) {
+            throw new Error('Blocking bit changed, it should not');
+        }
+    }
+    else if (blockingBit === 0) {
+        const bits = iterator.getBits(16);
+        if (bits !== 0b1111111111111000) {
+            throw new Error('Blocking bit changed, it should not');
+        }
+    }
+    const setBlockingBit = state.flac.getBlockingBitStrategy();
+    if (setBlockingBit === undefined) {
+        throw new Error('Blocking bit should be set');
+    }
+    iterator.stopReadingBits();
+    const structure = state.structure.getFlacStructure();
+    const minimumFrameSize = (_b = (_a = structure.boxes.find((b) => b.type === 'flac-streaminfo')) === null || _a === void 0 ? void 0 : _a.minimumFrameSize) !== null && _b !== void 0 ? _b : null;
+    if (minimumFrameSize === null) {
+        throw new Error('Expected flac-streaminfo');
+    }
+    if (minimumFrameSize !== 0) {
+        iterator.getSlice(minimumFrameSize - 2);
+    }
+    while (true) {
+        if (iterator.counter.getOffset() === state.contentLength) {
+            const size = iterator.counter.getOffset() - offset;
+            returnToCheckpoint();
+            const slice = iterator.getSlice(size);
+            await emitSample({ state, data: slice, offset });
+            break;
+        }
+        if (iterator.bytesRemaining() === 0) {
+            returnToCheckpoint();
+            break;
+        }
+        const nextByte = iterator.getUint8();
+        if (nextByte === 0xff) {
+            const nextBits = iterator.getUint8();
+            const expected = setBlockingBit === 1 ? 249 : 248;
+            if (nextBits !== expected) {
+                iterator.counter.decrement(1);
+                continue;
+            }
+            iterator.counter.decrement(2);
+            const nextIsLegit = (0, exports.parseFrameHeader)({ iterator, state });
+            if (!nextIsLegit) {
+                iterator.discard(1);
+                continue;
+            }
+            const size = iterator.counter.getOffset() - offset;
+            returnToCheckpoint();
+            const data = iterator.getSlice(size);
+            await emitSample({ state, data, offset });
+            break;
+        }
+    }
+    return null;
+};
+exports.parseFlacFrame = parseFlacFrame;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/parse-flac.d.ts

@@ -0,0 +1,7 @@
+import type { BufferIterator } from '../../iterator/buffer-iterator';
+import type { ParseResult } from '../../parse-result';
+import type { ParserState } from '../../state/parser-state';
+export declare const parseFlac: ({ iterator, state, }: {
+    iterator: BufferIterator;
+    state: ParserState;
+}) => Promise<ParseResult>;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/parse-flac.js

@@ -0,0 +1,29 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.parseFlac = void 0;
+const skip_1 = require("../../skip");
+const may_skip_video_data_1 = require("../../state/may-skip-video-data");
+const parse_flac_frame_1 = require("./parse-flac-frame");
+const parse_header_1 = require("./parse-header");
+const parse_meta_1 = require("./parse-meta");
+const parseFlac = ({ iterator, state, }) => {
+    const mediaSectionState = state.mediaSection.isCurrentByteInMediaSection(iterator);
+    if (mediaSectionState === 'in-section') {
+        if ((0, may_skip_video_data_1.maySkipVideoData)({ state })) {
+            return Promise.resolve((0, skip_1.makeSkip)(state.contentLength));
+        }
+        return (0, parse_flac_frame_1.parseFlacFrame)({ state, iterator });
+    }
+    const bytes = iterator.getByteString(4, true);
+    if (bytes === 'fLaC') {
+        return (0, parse_header_1.parseFlacHeader)({ state, iterator });
+    }
+    iterator.counter.decrement(4);
+    // https://www.rfc-editor.org/rfc/rfc9639.html#name-streaminfo
+    // section 8.1
+    return (0, parse_meta_1.parseMetaBlock)({
+        iterator,
+        state,
+    });
+};
+exports.parseFlac = parseFlac;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/parse-header.d.ts

@@ -0,0 +1,7 @@
+import type { BufferIterator } from '../../iterator/buffer-iterator';
+import type { ParseResult } from '../../parse-result';
+import type { ParserState } from '../../state/parser-state';
+export declare const parseFlacHeader: ({ state, }: {
+    state: ParserState;
+    iterator: BufferIterator;
+}) => Promise<ParseResult>;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/parse-header.js

@@ -0,0 +1,10 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.parseFlacHeader = void 0;
+const parseFlacHeader = ({ state, }) => {
+    state.structure.getFlacStructure().boxes.push({
+        type: 'flac-header',
+    });
+    return Promise.resolve(null);
+};
+exports.parseFlacHeader = parseFlacHeader;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/parse-meta.d.ts

@@ -0,0 +1,6 @@
+import type { BufferIterator } from '../../iterator/buffer-iterator';
+import type { ParserState } from '../../state/parser-state';
+export declare const parseMetaBlock: ({ iterator, state, }: {
+    iterator: BufferIterator;
+    state: ParserState;
+}) => Promise<import("../../parse-result").ParseResult>;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/parse-meta.js

@@ -0,0 +1,31 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.parseMetaBlock = void 0;
+const parse_metadata_1 = require("./parse-metadata");
+const parse_streaminfo_1 = require("./parse-streaminfo");
+const parse_unknown_block_1 = require("./parse-unknown-block");
+const flacTypes = {
+    streaminfo: 0,
+    vorbisComment: 4,
+};
+const parseMetaBlock = ({ iterator, state, }) => {
+    iterator.startReadingBits();
+    const isLastMetadata = iterator.getBits(1);
+    const metaBlockType = iterator.getBits(7);
+    iterator.stopReadingBits();
+    const size = iterator.getUint24();
+    if (isLastMetadata) {
+        state.mediaSection.addMediaSection({
+            start: iterator.counter.getOffset() + size,
+            size: state.contentLength - iterator.counter.getOffset() - size,
+        });
+    }
+    if (metaBlockType === flacTypes.streaminfo) {
+        return (0, parse_streaminfo_1.parseStreamInfo)({ iterator, state });
+    }
+    if (metaBlockType === flacTypes.vorbisComment) {
+        return (0, parse_metadata_1.parseVorbisComment)({ iterator, state, size });
+    }
+    return (0, parse_unknown_block_1.parseFlacUnkownBlock)({ iterator, state, size });
+};
+exports.parseMetaBlock = parseMetaBlock;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/parse-metadata.d.ts

@@ -0,0 +1,8 @@
+import type { BufferIterator } from '../../iterator/buffer-iterator';
+import type { ParseResult } from '../../parse-result';
+import type { ParserState } from '../../state/parser-state';
+export declare const parseVorbisComment: ({ state, iterator, size, }: {
+    state: ParserState;
+    iterator: BufferIterator;
+    size: number;
+}) => Promise<ParseResult>;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/parse-metadata.js

@@ -0,0 +1,24 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.parseVorbisComment = void 0;
+const parseVorbisComment = ({ state, iterator, size, }) => {
+    const { expectNoMoreBytes } = iterator.startBox(size);
+    const box = {
+        type: 'flac-vorbis-comment',
+        fields: [],
+    };
+    const vendorLength = iterator.getUint32Le();
+    const vendorString = iterator.getByteString(vendorLength, true);
+    const numberOfFields = iterator.getUint32Le();
+    box.fields.push({ key: 'vendor', value: vendorString, trackId: null });
+    for (let i = 0; i < numberOfFields; i++) {
+        const fieldLength = iterator.getUint32Le();
+        const field = iterator.getByteString(fieldLength, true);
+        const [key, value] = field.split('=');
+        box.fields.push({ key: key.toLowerCase(), value, trackId: null });
+    }
+    state.structure.getFlacStructure().boxes.push(box);
+    expectNoMoreBytes();
+    return Promise.resolve(null);
+};
+exports.parseVorbisComment = parseVorbisComment;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/parse-streaminfo.d.ts

@@ -0,0 +1,7 @@
+import type { BufferIterator } from '../../iterator/buffer-iterator';
+import type { ParseResult } from '../../parse-result';
+import type { ParserState } from '../../state/parser-state';
+export declare const parseStreamInfo: ({ iterator, state, }: {
+    iterator: BufferIterator;
+    state: ParserState;
+}) => Promise<ParseResult>;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/parse-streaminfo.js

@@ -0,0 +1,59 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.parseStreamInfo = void 0;
+const register_track_1 = require("../../register-track");
+const webcodecs_timescale_1 = require("../../webcodecs-timescale");
+const parseStreamInfo = async ({ iterator, state, }) => {
+    const counter = iterator.counter.getOffset();
+    const minimumBlockSize = iterator.getUint16();
+    const maximumBlockSize = iterator.getUint16();
+    const minimumFrameSize = iterator.getUint24();
+    const maximumFrameSize = iterator.getUint24();
+    iterator.startReadingBits();
+    const sampleRate = iterator.getBits(20);
+    const channels = iterator.getBits(3) + 1;
+    const bitsPerSample = iterator.getBits(5);
+    const totalSamples = iterator.getBits(36);
+    iterator.getBits(128); // md5
+    iterator.stopReadingBits();
+    const counterNow = iterator.counter.getOffset();
+    const size = counterNow - counter;
+    iterator.counter.decrement(size);
+    const asUint8Array = iterator.getSlice(size);
+    const flacStreamInfo = {
+        type: 'flac-streaminfo',
+        bitsPerSample,
+        channels,
+        maximumBlockSize,
+        maximumFrameSize,
+        minimumBlockSize,
+        minimumFrameSize,
+        sampleRate,
+        totalSamples,
+    };
+    state.structure.getFlacStructure().boxes.push(flacStreamInfo);
+    await (0, register_track_1.registerAudioTrack)({
+        container: 'flac',
+        track: {
+            codec: 'flac',
+            type: 'audio',
+            description: asUint8Array,
+            codecData: { type: 'flac-description', data: asUint8Array },
+            codecEnum: 'flac',
+            numberOfChannels: channels,
+            sampleRate,
+            originalTimescale: webcodecs_timescale_1.WEBCODECS_TIMESCALE,
+            trackId: 0,
+            startInSeconds: 0,
+            timescale: webcodecs_timescale_1.WEBCODECS_TIMESCALE,
+            trackMediaTimeOffsetInTrackTimescale: 0,
+        },
+        registerAudioSampleCallback: state.callbacks.registerAudioSampleCallback,
+        tracks: state.callbacks.tracks,
+        logLevel: state.logLevel,
+        onAudioTrack: state.onAudioTrack,
+    });
+    state.callbacks.tracks.setIsDone(state.logLevel);
+    return Promise.resolve(null);
+};
+exports.parseStreamInfo = parseStreamInfo;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/parse-unknown-block.d.ts

@@ -0,0 +1,8 @@
+import type { BufferIterator } from '../../iterator/buffer-iterator';
+import type { ParseResult } from '../../parse-result';
+import type { ParserState } from '../../state/parser-state';
+export declare const parseFlacUnkownBlock: ({ iterator, state, size, }: {
+    iterator: BufferIterator;
+    state: ParserState;
+    size: number;
+}) => Promise<ParseResult>;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/parse-unknown-block.js

@@ -0,0 +1,11 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.parseFlacUnkownBlock = void 0;
+const parseFlacUnkownBlock = ({ iterator, state, size, }) => {
+    iterator.discard(size);
+    state.structure.getFlacStructure().boxes.push({
+        type: 'flac-header',
+    });
+    return Promise.resolve(null);
+};
+exports.parseFlacUnkownBlock = parseFlacUnkownBlock;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/seeking-hints.d.ts

@@ -0,0 +1,18 @@
+import type { AudioSampleOffset } from '../../state/audio-sample-map';
+import type { FlacState } from '../../state/flac-state';
+import type { ParserState } from '../../state/parser-state';
+import type { SamplesObservedState } from '../../state/samples-observed/slow-duration-fps';
+export type FlacSeekingHints = {
+    type: 'flac-seeking-hints';
+    audioSampleMap: AudioSampleOffset[];
+    blockingBitStrategy: number | null;
+    lastSampleObserved: boolean;
+};
+export declare const getSeekingHintsForFlac: ({ flacState, samplesObserved, }: {
+    flacState: FlacState;
+    samplesObserved: SamplesObservedState;
+}) => FlacSeekingHints;
+export declare const setSeekingHintsForFlac: ({ hints, state, }: {
+    hints: FlacSeekingHints;
+    state: ParserState;
+}) => void;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/seeking-hints.js

@@ -0,0 +1,20 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.setSeekingHintsForFlac = exports.getSeekingHintsForFlac = void 0;
+const getSeekingHintsForFlac = ({ flacState, samplesObserved, }) => {
+    var _a;
+    return {
+        type: 'flac-seeking-hints',
+        audioSampleMap: flacState.audioSamples.getSamples(),
+        blockingBitStrategy: (_a = flacState.getBlockingBitStrategy()) !== null && _a !== void 0 ? _a : null,
+        lastSampleObserved: samplesObserved.getLastSampleObserved(),
+    };
+};
+exports.getSeekingHintsForFlac = getSeekingHintsForFlac;
+const setSeekingHintsForFlac = ({ hints, state, }) => {
+    if (hints.blockingBitStrategy !== null) {
+        state.flac.setBlockingBitStrategy(hints.blockingBitStrategy);
+    }
+    state.flac.audioSamples.setFromSeekingHints(hints.audioSampleMap);
+};
+exports.setSeekingHintsForFlac = setSeekingHintsForFlac;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/types.d.ts

@@ -0,0 +1,26 @@
+import type { MediaParserMetadataEntry } from '../../metadata/get-metadata';
+export type FlacHeader = {
+    type: 'flac-header';
+};
+export type FlacStreamInfo = {
+    type: 'flac-streaminfo';
+    minimumBlockSize: number;
+    maximumBlockSize: number;
+    minimumFrameSize: number;
+    maximumFrameSize: number;
+    sampleRate: number;
+    channels: number;
+    bitsPerSample: number;
+    totalSamples: number;
+};
+export type FlacVorbisComment = {
+    type: 'flac-vorbis-comment';
+    fields: MediaParserMetadataEntry[];
+};
+export type FlacUnknownBlock = {
+    type: 'flac-unknown-block';
+};
+export type FlacStructure = {
+    type: 'flac';
+    boxes: (FlacHeader | FlacStreamInfo | FlacUnknownBlock | FlacVorbisComment)[];
+};

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/flac/types.js

@@ -0,0 +1,2 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/are-samples-complete.d.ts

@@ -0,0 +1,6 @@
+import type { MoofBox } from '../../state/iso-base-media/precomputed-moof';
+import type { TfraBox } from './mfra/tfra';
+export declare const areSamplesComplete: ({ moofBoxes, tfraBoxes, }: {
+    moofBoxes: MoofBox[];
+    tfraBoxes: TfraBox[];
+}) => boolean;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/are-samples-complete.js

@@ -0,0 +1,11 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.areSamplesComplete = void 0;
+const areSamplesComplete = ({ moofBoxes, tfraBoxes, }) => {
+    if (moofBoxes.length === 0) {
+        return true;
+    }
+    return (tfraBoxes.length > 0 &&
+        tfraBoxes.every((t) => t.entries.length === moofBoxes.length));
+};
+exports.areSamplesComplete = areSamplesComplete;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/base-media-box.d.ts

@@ -0,0 +1,40 @@
+import type { BaseBox } from './base-type';
+import type { ElstBox } from './elst';
+import type { EsdsBox } from './esds/esds';
+import type { FtypBox } from './ftyp';
+import type { MdhdBox } from './mdhd';
+import type { HdlrBox } from './meta/hdlr';
+import type { IlstBox } from './meta/ilst';
+import type { TfraBox } from './mfra/tfra';
+import type { MoovBox } from './moov/moov';
+import type { MvhdBox } from './moov/mvhd';
+import type { TrexBox } from './moov/trex';
+import type { Av1CBox } from './stsd/av1c';
+import type { AvccBox } from './stsd/avcc';
+import type { ColorParameterBox } from './stsd/colr';
+import type { CttsBox } from './stsd/ctts';
+import type { HvccBox } from './stsd/hvcc';
+import type { KeysBox } from './stsd/keys';
+import type { MebxBox } from './stsd/mebx';
+import type { PaspBox } from './stsd/pasp';
+import type { StcoBox } from './stsd/stco';
+import type { StscBox } from './stsd/stsc';
+import type { StsdBox } from './stsd/stsd';
+import type { StssBox } from './stsd/stss';
+import type { StszBox } from './stsd/stsz';
+import type { SttsBox } from './stsd/stts';
+import type { VpccBox } from './stsd/vpcc';
+import type { TfdtBox } from './tfdt';
+import type { TfhdBox } from './tfhd';
+import type { TkhdBox } from './tkhd';
+import type { TrakBox } from './trak/trak';
+import type { TrunBox } from './trun';
+import type { VoidBox } from './void-box';
+export interface RegularBox extends BaseBox {
+    boxType: string;
+    boxSize: number;
+    children: IsoBaseMediaBox[];
+    offset: number;
+    type: 'regular-box';
+}
+export type IsoBaseMediaBox = RegularBox | FtypBox | MvhdBox | TkhdBox | StsdBox | ElstBox | MebxBox | KeysBox | MoovBox | TrakBox | SttsBox | MdhdBox | IlstBox | EsdsBox | StszBox | StcoBox | StscBox | AvccBox | HvccBox | VpccBox | VoidBox | StssBox | PaspBox | CttsBox | Av1CBox | TrunBox | HdlrBox | ColorParameterBox | TfdtBox | TfhdBox | TfraBox | TrexBox;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/base-media-box.js

@@ -0,0 +1,2 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/base-type.d.ts

@@ -0,0 +1,4 @@
+export interface BaseBox {
+    boxSize: number;
+    offset: number;
+}

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/base-type.js

@@ -0,0 +1,2 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/collect-sample-positions-from-moof-boxes.d.ts

@@ -0,0 +1,15 @@
+import type { MoofBox } from '../../state/iso-base-media/precomputed-moof';
+import type { TrexBox } from './moov/trex';
+import type { TkhdBox } from './tkhd';
+export declare const collectSamplePositionsFromMoofBoxes: ({ moofBoxes, tkhdBox, isComplete, trexBoxes, }: {
+    moofBoxes: MoofBox[];
+    tkhdBox: TkhdBox;
+    isComplete: boolean;
+    trexBoxes: TrexBox[];
+}) => {
+    samplePositions: {
+        isLastFragment: boolean;
+        samples: import("../../get-sample-positions").SamplePosition[];
+    }[];
+    isComplete: boolean;
+};

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/collect-sample-positions-from-moof-boxes.js

@@ -0,0 +1,19 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.collectSamplePositionsFromMoofBoxes = void 0;
+const samples_from_moof_1 = require("../../samples-from-moof");
+const collectSamplePositionsFromMoofBoxes = ({ moofBoxes, tkhdBox, isComplete, trexBoxes, }) => {
+    const samplePositions = moofBoxes.map((m, index) => {
+        const isLastFragment = index === moofBoxes.length - 1 && isComplete;
+        return {
+            isLastFragment,
+            samples: (0, samples_from_moof_1.getSamplesFromMoof)({
+                moofBox: m,
+                trackId: tkhdBox.trackId,
+                trexBoxes,
+            }),
+        };
+    });
+    return { samplePositions, isComplete };
+};
+exports.collectSamplePositionsFromMoofBoxes = collectSamplePositionsFromMoofBoxes;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/collect-sample-positions-from-trak.d.ts

@@ -0,0 +1,2 @@
+import type { TrakBox } from './trak/trak';
+export declare const collectSamplePositionsFromTrak: (trakBox: TrakBox) => import("../../get-sample-positions").SamplePosition[];

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/collect-sample-positions-from-trak.js

@@ -0,0 +1,49 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.collectSamplePositionsFromTrak = void 0;
+const get_fps_1 = require("../../get-fps");
+const get_sample_positions_1 = require("../../get-sample-positions");
+const get_sample_positions_from_mp4_1 = require("../../get-sample-positions-from-mp4");
+const should_group_audio_samples_1 = require("./should-group-audio-samples");
+const traversal_1 = require("./traversal");
+const collectSamplePositionsFromTrak = (trakBox) => {
+    const shouldGroupSamples = (0, should_group_audio_samples_1.shouldGroupAudioSamples)(trakBox);
+    const timescaleAndDuration = (0, get_fps_1.getTimescaleAndDuration)(trakBox);
+    if (shouldGroupSamples) {
+        return (0, get_sample_positions_from_mp4_1.getGroupedSamplesPositionsFromMp4)({
+            trakBox,
+            bigEndian: shouldGroupSamples.bigEndian,
+        });
+    }
+    const stszBox = (0, traversal_1.getStszBox)(trakBox);
+    const stcoBox = (0, traversal_1.getStcoBox)(trakBox);
+    const stscBox = (0, traversal_1.getStscBox)(trakBox);
+    const stssBox = (0, traversal_1.getStssBox)(trakBox);
+    const sttsBox = (0, traversal_1.getSttsBox)(trakBox);
+    const cttsBox = (0, traversal_1.getCttsBox)(trakBox);
+    if (!stszBox) {
+        throw new Error('Expected stsz box in trak box');
+    }
+    if (!stcoBox) {
+        throw new Error('Expected stco box in trak box');
+    }
+    if (!stscBox) {
+        throw new Error('Expected stsc box in trak box');
+    }
+    if (!sttsBox) {
+        throw new Error('Expected stts box in trak box');
+    }
+    if (!timescaleAndDuration) {
+        throw new Error('Expected timescale and duration in trak box');
+    }
+    const samplePositions = (0, get_sample_positions_1.getSamplePositions)({
+        stcoBox,
+        stscBox,
+        stszBox,
+        stssBox,
+        sttsBox,
+        cttsBox,
+    });
+    return samplePositions;
+};
+exports.collectSamplePositionsFromTrak = collectSamplePositionsFromTrak;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/color-to-webcodecs-colors.d.ts

@@ -0,0 +1,2 @@
+import type { MediaParserAdvancedColor } from '../../get-tracks';
+export declare const mediaParserAdvancedColorToWebCodecsColor: (color: MediaParserAdvancedColor) => VideoColorSpaceInit;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/color-to-webcodecs-colors.js

@@ -0,0 +1,12 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.mediaParserAdvancedColorToWebCodecsColor = void 0;
+const mediaParserAdvancedColorToWebCodecsColor = (color) => {
+    return {
+        transfer: color.transfer,
+        matrix: color.matrix,
+        primaries: color.primaries,
+        fullRange: color.fullRange,
+    };
+};
+exports.mediaParserAdvancedColorToWebCodecsColor = mediaParserAdvancedColorToWebCodecsColor;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/elst.d.ts

@@ -0,0 +1,19 @@
+import type { BufferIterator } from '../../iterator/buffer-iterator';
+import type { BaseBox } from './base-type';
+export interface ElstBox extends BaseBox {
+    type: 'elst-box';
+    version: number;
+    flags: number;
+    entries: ElstEntry[];
+}
+export type ElstEntry = {
+    editDuration: number;
+    mediaTime: number;
+    mediaRateInteger: number;
+    mediaRateFraction: number;
+};
+export declare const parseElst: ({ iterator, size, offset, }: {
+    iterator: BufferIterator;
+    size: number;
+    offset: number;
+}) => ElstBox;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/elst.js

@@ -0,0 +1,33 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.parseElst = void 0;
+const parseElst = ({ iterator, size, offset, }) => {
+    const { discardRest } = iterator.startBox(size - 8);
+    const version = iterator.getUint8();
+    const flags = iterator.getUint24();
+    const entryCount = iterator.getUint32();
+    const entries = [];
+    for (let i = 0; i < entryCount; i++) {
+        const editDuration = Number(version === 1 ? iterator.getUint64() : iterator.getUint32());
+        const mediaTime = Number(version === 1 ? iterator.getUint64() : iterator.getInt32());
+        const mediaRateInteger = iterator.getUint16();
+        const mediaRateFraction = iterator.getUint16();
+        entries.push({
+            editDuration,
+            mediaTime,
+            mediaRateInteger,
+            mediaRateFraction,
+        });
+    }
+    discardRest();
+    const result = {
+        type: 'elst-box',
+        version,
+        flags,
+        entries,
+        boxSize: size,
+        offset,
+    };
+    return result;
+};
+exports.parseElst = parseElst;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/esds/decoder-specific-config.d.ts

@@ -0,0 +1,14 @@
+import type { BufferIterator } from '../../../iterator/buffer-iterator';
+type UnknownDecoderSpecificConfig = {
+    type: 'unknown-decoder-specific-config';
+};
+type AudioSpecificConfig = {
+    type: 'mp4a-specific-config';
+    audioObjectType: number;
+    samplingFrequencyIndex: number;
+    channelConfiguration: number;
+    asBytes: Uint8Array;
+};
+export type DecoderSpecificConfig = UnknownDecoderSpecificConfig | AudioSpecificConfig;
+export declare const parseDecoderSpecificConfig: (iterator: BufferIterator) => DecoderSpecificConfig;
+export {};

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/esds/decoder-specific-config.js

@@ -0,0 +1,38 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.parseDecoderSpecificConfig = void 0;
+const parseDecoderSpecificConfig = (iterator) => {
+    const layerTag = iterator.getUint8();
+    const layerSize = iterator.getPaddedFourByteNumber();
+    const start = iterator.counter.getOffset();
+    if (layerTag !== 5) {
+        iterator.discard(layerSize);
+        return {
+            type: 'unknown-decoder-specific-config',
+        };
+    }
+    // https://csclub.uwaterloo.ca/~pbarfuss/ISO14496-3-2009.pdf
+    // 1.6.2.1 AudioSpecificConfig
+    const bytes = iterator.getSlice(layerSize);
+    iterator.counter.decrement(layerSize);
+    iterator.startReadingBits();
+    const audioObjectType = iterator.getBits(5);
+    const samplingFrequencyIndex = iterator.getBits(4);
+    if (samplingFrequencyIndex === 0xf) {
+        iterator.getBits(24);
+    }
+    const channelConfiguration = iterator.getBits(4);
+    iterator.stopReadingBits();
+    const read = iterator.counter.getOffset() - start;
+    if (read < layerSize) {
+        iterator.discard(layerSize - read);
+    }
+    return {
+        type: 'mp4a-specific-config',
+        audioObjectType,
+        samplingFrequencyIndex,
+        channelConfiguration,
+        asBytes: bytes,
+    };
+};
+exports.parseDecoderSpecificConfig = parseDecoderSpecificConfig;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/esds/esds-descriptors.d.ts

@@ -0,0 +1,29 @@
+import type { BufferIterator } from '../../../iterator/buffer-iterator';
+import type { DecoderSpecificConfig } from './decoder-specific-config';
+type AudioObjectType = 'aac' | 'mp3' | 'unknown';
+type DecoderConfigDescriptor = {
+    type: 'decoder-config-descriptor';
+    objectTypeIndication: AudioObjectType;
+    asNumber: number;
+    streamType: number;
+    upStream: number;
+    bufferSizeDB: number;
+    maxBitrate: number;
+    avgBitrate: number;
+    decoderSpecificConfigs: DecoderSpecificConfig[];
+};
+type SlConfigDescriptor = {
+    type: 'sl-config-descriptor';
+};
+type UnknownDescriptor = {
+    type: 'unknown-descriptor';
+};
+export type Descriptor = DecoderConfigDescriptor | SlConfigDescriptor | UnknownDescriptor;
+type DescriptorAndNext = {
+    descriptor: Descriptor | null;
+};
+export declare const processDescriptor: ({ iterator, }: {
+    iterator: BufferIterator;
+}) => DescriptorAndNext;
+export declare const parseDescriptors: (iterator: BufferIterator, maxBytes: number) => Descriptor[];
+export {};

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/esds/esds-descriptors.js

@@ -0,0 +1,82 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.parseDescriptors = exports.processDescriptor = void 0;
+const decoder_specific_config_1 = require("./decoder-specific-config");
+const mapToObjectAudioIndicator = (num) => {
+    // https://chromium.googlesource.com/chromium/src/media/+/master/formats/mp4/es_descriptor.h
+    // http://netmedia.zju.edu.cn/multimedia2013/mpeg-4/ISO%20IEC%2014496-1%20MPEG-4%20System%20Standard.pdf
+    // Page 42, table 8
+    if (num === 0x40) {
+        return 'aac';
+    }
+    if (num === 0x6b) {
+        return 'mp3';
+    }
+    return 'unknown';
+};
+const processDescriptor = ({ iterator, }) => {
+    const tag = iterator.getUint8();
+    if (tag === 4) {
+        const size = iterator.getPaddedFourByteNumber();
+        const initialOffset = iterator.counter.getOffset();
+        const objectTypeIndication = iterator.getUint8();
+        iterator.startReadingBits();
+        const streamType = iterator.getBits(6);
+        const upStream = iterator.getBits(1);
+        // reserved
+        iterator.getBits(1);
+        const bufferSizeDB = iterator.getBits(24);
+        iterator.stopReadingBits();
+        const maxBitrate = iterator.getUint32();
+        const avgBitrate = iterator.getUint32();
+        const decoderSpecificConfigs = [];
+        while (size - (iterator.counter.getOffset() - initialOffset) > 0) {
+            const decoderSpecificConfig = (0, decoder_specific_config_1.parseDecoderSpecificConfig)(iterator);
+            decoderSpecificConfigs.push(decoderSpecificConfig);
+        }
+        return {
+            descriptor: {
+                type: 'decoder-config-descriptor',
+                objectTypeIndication: mapToObjectAudioIndicator(objectTypeIndication),
+                asNumber: objectTypeIndication,
+                bufferSizeDB,
+                streamType,
+                upStream,
+                avgBitrate,
+                maxBitrate,
+                decoderSpecificConfigs,
+            },
+        };
+    }
+    if (tag === 6) {
+        const size = iterator.getPaddedFourByteNumber();
+        iterator.discard(size);
+        return {
+            descriptor: {
+                type: 'sl-config-descriptor',
+            },
+        };
+    }
+    return {
+        descriptor: null,
+    };
+};
+exports.processDescriptor = processDescriptor;
+const parseDescriptors = (iterator, maxBytes) => {
+    const descriptors = [];
+    const initialOffset = iterator.counter.getOffset();
+    while (iterator.bytesRemaining() > 0 &&
+        iterator.counter.getOffset() - initialOffset < maxBytes) {
+        const { descriptor } = (0, exports.processDescriptor)({
+            iterator,
+        });
+        if (descriptor) {
+            descriptors.push(descriptor);
+        }
+        else {
+            break;
+        }
+    }
+    return descriptors;
+};
+exports.parseDescriptors = parseDescriptors;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/esds/esds.d.ts

@@ -0,0 +1,15 @@
+import type { BufferIterator } from '../../../iterator/buffer-iterator';
+import type { Descriptor } from './esds-descriptors';
+export interface EsdsBox {
+    type: 'esds-box';
+    version: number;
+    tag: number;
+    sizeOfInstance: number;
+    esId: number;
+    descriptors: Descriptor[];
+}
+export declare const parseEsds: ({ data, size, fileOffset, }: {
+    data: BufferIterator;
+    size: number;
+    fileOffset: number;
+}) => EsdsBox;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/esds/esds.js

@@ -0,0 +1,27 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.parseEsds = void 0;
+const esds_descriptors_1 = require("./esds-descriptors");
+const parseEsds = ({ data, size, fileOffset, }) => {
+    const version = data.getUint8();
+    // Flags, we discard them
+    data.discard(3);
+    const tag = data.getUint8();
+    const sizeOfInstance = data.getPaddedFourByteNumber();
+    const esId = data.getUint16();
+    // disard 1 byte, currently unknown
+    data.discard(1);
+    const remaining = size - (data.counter.getOffset() - fileOffset);
+    const descriptors = (0, esds_descriptors_1.parseDescriptors)(data, remaining);
+    const remainingNow = size - (data.counter.getOffset() - fileOffset);
+    data.discard(remainingNow);
+    return {
+        type: 'esds-box',
+        version,
+        tag,
+        sizeOfInstance,
+        esId,
+        descriptors,
+    };
+};
+exports.parseEsds = parseEsds;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/find-keyframe-before-time.d.ts

@@ -0,0 +1,11 @@
+import type { SamplePosition } from '../../get-sample-positions';
+import type { MediaParserLogLevel } from '../../log';
+import type { MediaSection } from '../../state/video-section';
+export declare const findKeyframeBeforeTime: ({ samplePositions, time, timescale, mediaSections, logLevel, startInSeconds, }: {
+    samplePositions: SamplePosition[];
+    time: number;
+    timescale: number;
+    mediaSections: MediaSection[];
+    logLevel: MediaParserLogLevel;
+    startInSeconds: number;
+}) => SamplePosition | null;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/find-keyframe-before-time.js

@@ -0,0 +1,33 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.findKeyframeBeforeTime = void 0;
+const log_1 = require("../../log");
+const findKeyframeBeforeTime = ({ samplePositions, time, timescale, mediaSections, logLevel, startInSeconds, }) => {
+    let videoByte = 0;
+    let videoSample = null;
+    for (const sample of samplePositions) {
+        const ctsInSeconds = sample.timestamp / timescale + startInSeconds;
+        const dtsInSeconds = sample.decodingTimestamp / timescale + startInSeconds;
+        if (!sample.isKeyframe) {
+            continue;
+        }
+        if (!(ctsInSeconds <= time || dtsInSeconds <= time)) {
+            continue;
+        }
+        if (videoByte <= sample.offset) {
+            videoByte = sample.offset;
+            videoSample = sample;
+        }
+    }
+    if (!videoSample) {
+        throw new Error('No sample found');
+    }
+    const mediaSection = mediaSections.find((section) => videoSample.offset >= section.start &&
+        videoSample.offset < section.start + section.size);
+    if (!mediaSection) {
+        log_1.Log.trace(logLevel, 'Found a sample, but the offset has not yet been marked as a video section yet. Not yet able to seek, but probably once we have started reading the next box.', videoSample);
+        return null;
+    }
+    return videoSample;
+};
+exports.findKeyframeBeforeTime = findKeyframeBeforeTime;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/find-track-to-seek.d.ts

@@ -0,0 +1,14 @@
+import type { SamplePosition } from '../../get-sample-positions';
+import type { MediaParserAudioTrack, MediaParserOtherTrack, MediaParserVideoTrack } from '../../get-tracks';
+import type { IsoBaseMediaStructure } from '../../parse-result';
+import type { StructureState } from '../../state/structure';
+export declare const findAnyTrackWithSamplePositions: (allTracks: (MediaParserVideoTrack | MediaParserAudioTrack | MediaParserOtherTrack)[], struc: IsoBaseMediaStructure) => {
+    track: MediaParserVideoTrack | MediaParserAudioTrack;
+    samplePositions: SamplePosition[];
+} | null;
+type TrackWithSamplePositions = {
+    track: MediaParserVideoTrack | MediaParserAudioTrack;
+    samplePositions: SamplePosition[];
+};
+export declare const findTrackToSeek: (allTracks: (MediaParserVideoTrack | MediaParserAudioTrack | MediaParserOtherTrack)[], structure: StructureState) => TrackWithSamplePositions | null;
+export {};

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/find-track-to-seek.js

@@ -0,0 +1,64 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.findTrackToSeek = exports.findAnyTrackWithSamplePositions = void 0;
+const are_samples_complete_1 = require("./are-samples-complete");
+const get_sample_positions_from_track_1 = require("./get-sample-positions-from-track");
+const traversal_1 = require("./traversal");
+const findAnyTrackWithSamplePositions = (allTracks, struc) => {
+    const moov = (0, traversal_1.getMoovFromFromIsoStructure)(struc);
+    if (!moov) {
+        return null;
+    }
+    for (const track of allTracks) {
+        if (track.type === 'video' || track.type === 'audio') {
+            const trakBox = (0, traversal_1.getTrakBoxByTrackId)(moov, track.trackId);
+            if (!trakBox) {
+                continue;
+            }
+            const { samplePositions } = (0, get_sample_positions_from_track_1.getSamplePositionsFromTrack)({
+                trakBox,
+                moofBoxes: (0, traversal_1.getMoofBoxes)(struc.boxes),
+                moofComplete: (0, are_samples_complete_1.areSamplesComplete)({
+                    moofBoxes: (0, traversal_1.getMoofBoxes)(struc.boxes),
+                    tfraBoxes: (0, traversal_1.getTfraBoxes)(struc.boxes),
+                }),
+                trexBoxes: (0, traversal_1.getTrexBoxes)(moov),
+            });
+            if (samplePositions.length === 0) {
+                continue;
+            }
+            return { track, samplePositions };
+        }
+    }
+    return null;
+};
+exports.findAnyTrackWithSamplePositions = findAnyTrackWithSamplePositions;
+const findTrackToSeek = (allTracks, structure) => {
+    const firstVideoTrack = allTracks.find((t) => t.type === 'video');
+    const struc = structure.getIsoStructure();
+    if (!firstVideoTrack) {
+        return (0, exports.findAnyTrackWithSamplePositions)(allTracks, struc);
+    }
+    const moov = (0, traversal_1.getMoovFromFromIsoStructure)(struc);
+    if (!moov) {
+        return null;
+    }
+    const trakBox = (0, traversal_1.getTrakBoxByTrackId)(moov, firstVideoTrack.trackId);
+    if (!trakBox) {
+        return null;
+    }
+    const { samplePositions } = (0, get_sample_positions_from_track_1.getSamplePositionsFromTrack)({
+        trakBox,
+        moofBoxes: (0, traversal_1.getMoofBoxes)(struc.boxes),
+        moofComplete: (0, are_samples_complete_1.areSamplesComplete)({
+            moofBoxes: (0, traversal_1.getMoofBoxes)(struc.boxes),
+            tfraBoxes: (0, traversal_1.getTfraBoxes)(struc.boxes),
+        }),
+        trexBoxes: (0, traversal_1.getTrexBoxes)(moov),
+    });
+    if (samplePositions.length === 0) {
+        return (0, exports.findAnyTrackWithSamplePositions)(allTracks, struc);
+    }
+    return { track: firstVideoTrack, samplePositions };
+};
+exports.findTrackToSeek = findTrackToSeek;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/ftyp.d.ts

@@ -0,0 +1,13 @@
+import type { BufferIterator } from '../../iterator/buffer-iterator';
+import type { BaseBox } from './base-type';
+export interface FtypBox extends BaseBox {
+    type: 'ftyp-box';
+    majorBrand: string;
+    minorVersion: number;
+    compatibleBrands: string[];
+}
+export declare const parseFtyp: ({ iterator, size, offset, }: {
+    iterator: BufferIterator;
+    size: number;
+    offset: number;
+}) => FtypBox;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/ftyp.js

@@ -0,0 +1,22 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.parseFtyp = void 0;
+const parseFtyp = ({ iterator, size, offset, }) => {
+    const majorBrand = iterator.getByteString(4, false);
+    const minorVersion = iterator.getFourByteNumber();
+    const types = (size - iterator.counter.getOffset()) / 4;
+    const compatibleBrands = [];
+    for (let i = 0; i < types; i++) {
+        compatibleBrands.push(iterator.getByteString(4, false).trim());
+    }
+    const offsetAtEnd = iterator.counter.getOffset();
+    return {
+        type: 'ftyp-box',
+        majorBrand,
+        minorVersion,
+        compatibleBrands,
+        offset,
+        boxSize: offsetAtEnd - offset,
+    };
+};
+exports.parseFtyp = parseFtyp;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/get-actual-number-of-channels.d.ts

@@ -0,0 +1,14 @@
+import type { MediaParserCodecData } from '../../codec-data';
+import type { MediaParserAudioCodec } from '../../get-tracks';
+type AudioDecoderConfig = {
+    numberOfChannels: number;
+    sampleRate: number;
+    codecPrivate: MediaParserCodecData | null;
+};
+export declare const getActualDecoderParameters: ({ audioCodec, codecPrivate, numberOfChannels, sampleRate, }: {
+    audioCodec: MediaParserAudioCodec;
+    codecPrivate: MediaParserCodecData | null;
+    numberOfChannels: number;
+    sampleRate: number;
+}) => AudioDecoderConfig;
+export {};

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/get-actual-number-of-channels.js

@@ -0,0 +1,33 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getActualDecoderParameters = void 0;
+const aac_codecprivate_1 = require("../../aac-codecprivate");
+// Example video:	'https://pub-646d808d9cb240cea53bedc76dd3cd0c.r2.dev/riverside.mp4';
+// This video has `numberOfChannels = 2`, but the actual number of channels is `1` according to Codec Private.
+// Therefore, prioritizing Codec Private over `numberOfChannels`.
+const getActualDecoderParameters = ({ audioCodec, codecPrivate, numberOfChannels, sampleRate, }) => {
+    if (audioCodec !== 'aac') {
+        return {
+            numberOfChannels,
+            sampleRate,
+            codecPrivate,
+        };
+    }
+    if (codecPrivate === null) {
+        return { numberOfChannels, sampleRate, codecPrivate };
+    }
+    if (codecPrivate.type !== 'aac-config') {
+        throw new Error('Expected AAC codec private data');
+    }
+    const parsed = (0, aac_codecprivate_1.parseAacCodecPrivate)(codecPrivate.data);
+    const actual = (0, aac_codecprivate_1.createAacCodecPrivate)({
+        ...parsed,
+        codecPrivate: codecPrivate.data,
+    });
+    return {
+        numberOfChannels: parsed.channelConfiguration,
+        sampleRate: parsed.sampleRate,
+        codecPrivate: { type: 'aac-config', data: actual },
+    };
+};
+exports.getActualDecoderParameters = getActualDecoderParameters;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/get-children.d.ts

@@ -0,0 +1,11 @@
+import type { BufferIterator } from '../../iterator/buffer-iterator';
+import type { MediaParserLogLevel } from '../../log';
+import type { IsoBaseMediaBox } from './base-media-box';
+import type { OnlyIfMoovAtomExpected } from './process-box';
+export declare const getIsoBaseMediaChildren: ({ size, iterator, logLevel, onlyIfMoovAtomExpected, contentLength, }: {
+    size: number;
+    iterator: BufferIterator;
+    logLevel: MediaParserLogLevel;
+    onlyIfMoovAtomExpected: OnlyIfMoovAtomExpected | null;
+    contentLength: number;
+}) => Promise<IsoBaseMediaBox[]>;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/get-children.js

@@ -0,0 +1,26 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getIsoBaseMediaChildren = void 0;
+const process_box_1 = require("./process-box");
+const getIsoBaseMediaChildren = async ({ size, iterator, logLevel, onlyIfMoovAtomExpected, contentLength, }) => {
+    const boxes = [];
+    const initial = iterator.counter.getOffset();
+    while (iterator.counter.getOffset() < size + initial) {
+        const parsed = await (0, process_box_1.processBox)({
+            iterator,
+            logLevel,
+            onlyIfMoovAtomExpected,
+            onlyIfMdatAtomExpected: null,
+            contentLength,
+        });
+        if (parsed.type !== 'box') {
+            throw new Error('Expected box');
+        }
+        boxes.push(parsed.box);
+    }
+    if (iterator.counter.getOffset() > size + initial) {
+        throw new Error(`read too many bytes - size: ${size}, read: ${iterator.counter.getOffset() - initial}. initial offset: ${initial}`);
+    }
+    return boxes;
+};
+exports.getIsoBaseMediaChildren = getIsoBaseMediaChildren;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/get-keyframes.d.ts

@@ -0,0 +1,3 @@
+import type { MediaParserKeyframe } from '../../options';
+import type { ParserState } from '../../state/parser-state';
+export declare const getKeyframesFromIsoBaseMedia: (state: ParserState) => MediaParserKeyframe[];

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/get-keyframes.js

@@ -0,0 +1,58 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getKeyframesFromIsoBaseMedia = void 0;
+const get_tracks_1 = require("../../get-tracks");
+const are_samples_complete_1 = require("./are-samples-complete");
+const get_sample_positions_from_track_1 = require("./get-sample-positions-from-track");
+const traversal_1 = require("./traversal");
+const getKeyframesFromIsoBaseMedia = (state) => {
+    const tracks = (0, get_tracks_1.getTracksFromIsoBaseMedia)({
+        isoState: state.iso,
+        m3uPlaylistContext: state.m3uPlaylistContext,
+        structure: state.structure,
+        mayUsePrecomputed: true,
+    });
+    const videoTracks = tracks.filter((t) => t.type === 'video');
+    const structure = state.structure.getIsoStructure();
+    const moofBoxes = (0, traversal_1.getMoofBoxes)(structure.boxes);
+    const tfraBoxes = (0, traversal_1.getTfraBoxes)(structure.boxes);
+    const moov = (0, traversal_1.getMoovFromFromIsoStructure)(structure);
+    if (!moov) {
+        return [];
+    }
+    const allSamples = videoTracks.map((t) => {
+        const { originalTimescale: ts } = t;
+        const trakBox = (0, traversal_1.getTrakBoxByTrackId)(moov, t.trackId);
+        if (!trakBox) {
+            return [];
+        }
+        const { samplePositions, isComplete } = (0, get_sample_positions_from_track_1.getSamplePositionsFromTrack)({
+            trakBox,
+            moofBoxes,
+            moofComplete: (0, are_samples_complete_1.areSamplesComplete)({
+                moofBoxes,
+                tfraBoxes,
+            }),
+            trexBoxes: (0, traversal_1.getTrexBoxes)(moov),
+        });
+        if (!isComplete) {
+            return [];
+        }
+        const keyframes = samplePositions
+            .filter((k) => {
+            return k.isKeyframe;
+        })
+            .map((k) => {
+            return {
+                trackId: t.trackId,
+                presentationTimeInSeconds: k.timestamp / ts,
+                decodingTimeInSeconds: k.decodingTimestamp / ts,
+                positionInBytes: k.offset,
+                sizeInBytes: k.size,
+            };
+        });
+        return keyframes;
+    });
+    return allSamples.flat();
+};
+exports.getKeyframesFromIsoBaseMedia = getKeyframesFromIsoBaseMedia;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/get-mfra-seeking-box.d.ts

@@ -0,0 +1,15 @@
+import type { MediaParserController } from '../../controller/media-parser-controller';
+import type { PrefetchCache } from '../../fetch';
+import type { MediaParserLogLevel } from '../../log';
+import type { ParseMediaSrc } from '../../options';
+import type { MediaParserReaderInterface } from '../../readers/reader';
+import type { IsoBaseMediaBox } from './base-media-box';
+export type MfraSeekingBoxOptions = {
+    contentLength: number;
+    controller: MediaParserController;
+    readerInterface: MediaParserReaderInterface;
+    src: ParseMediaSrc;
+    logLevel: MediaParserLogLevel;
+    prefetchCache: PrefetchCache;
+};
+export declare const getMfraSeekingBox: ({ contentLength, controller, readerInterface, src, logLevel, prefetchCache, }: MfraSeekingBoxOptions) => Promise<IsoBaseMediaBox[] | null>;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/get-mfra-seeking-box.js

@@ -0,0 +1,37 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getMfraSeekingBox = void 0;
+const get_children_1 = require("./get-children");
+const get_mfra_atom_1 = require("./mfra/get-mfra-atom");
+const get_mfro_atom_1 = require("./mfra/get-mfro-atom");
+const getMfraSeekingBox = async ({ contentLength, controller, readerInterface, src, logLevel, prefetchCache, }) => {
+    const parentSize = await (0, get_mfro_atom_1.getMfroAtom)({
+        contentLength,
+        controller,
+        readerInterface,
+        src,
+        logLevel,
+        prefetchCache,
+    });
+    if (!parentSize) {
+        return null;
+    }
+    const mfraAtom = await (0, get_mfra_atom_1.getMfraAtom)({
+        contentLength,
+        controller,
+        readerInterface,
+        src,
+        parentSize,
+        logLevel,
+        prefetchCache,
+    });
+    mfraAtom.discard(8);
+    return (0, get_children_1.getIsoBaseMediaChildren)({
+        iterator: mfraAtom,
+        logLevel,
+        size: parentSize - 8,
+        onlyIfMoovAtomExpected: null,
+        contentLength,
+    });
+};
+exports.getMfraSeekingBox = getMfraSeekingBox;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/get-moov-atom.d.ts

@@ -0,0 +1,6 @@
+import type { ParserState } from '../../state/parser-state';
+import type { MoovBox } from './moov/moov';
+export declare const getMoovAtom: ({ endOfMdat, state, }: {
+    state: ParserState;
+    endOfMdat: number;
+}) => Promise<MoovBox>;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/get-moov-atom.js

@@ -0,0 +1,112 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getMoovAtom = void 0;
+const buffer_iterator_1 = require("../../iterator/buffer-iterator");
+const log_1 = require("../../log");
+const register_track_1 = require("../../register-track");
+const can_skip_tracks_1 = require("../../state/can-skip-tracks");
+const has_tracks_section_1 = require("../../state/has-tracks-section");
+const structure_1 = require("../../state/structure");
+const process_box_1 = require("./process-box");
+const traversal_1 = require("./traversal");
+const getMoovAtom = async ({ endOfMdat, state, }) => {
+    var _a;
+    const headerSegment = (_a = state.m3uPlaylistContext) === null || _a === void 0 ? void 0 : _a.mp4HeaderSegment;
+    if (headerSegment) {
+        const segment = (0, traversal_1.getMoovFromFromIsoStructure)(headerSegment);
+        if (!segment) {
+            throw new Error('No moov box found in header segment');
+        }
+        return segment;
+    }
+    const start = Date.now();
+    log_1.Log.verbose(state.logLevel, 'Starting second fetch to get moov atom');
+    const { reader } = await state.readerInterface.read({
+        src: state.src,
+        range: endOfMdat,
+        controller: state.controller,
+        logLevel: state.logLevel,
+        prefetchCache: state.prefetchCache,
+    });
+    const onAudioTrack = state.onAudioTrack
+        ? async ({ track, container }) => {
+            await (0, register_track_1.registerAudioTrack)({
+                track,
+                container,
+                logLevel: state.logLevel,
+                onAudioTrack: state.onAudioTrack,
+                registerAudioSampleCallback: state.callbacks.registerAudioSampleCallback,
+                tracks: state.callbacks.tracks,
+            });
+            return null;
+        }
+        : null;
+    const onVideoTrack = state.onVideoTrack
+        ? async ({ track, container }) => {
+            await (0, register_track_1.registerVideoTrack)({
+                track,
+                container,
+                logLevel: state.logLevel,
+                onVideoTrack: state.onVideoTrack,
+                registerVideoSampleCallback: state.callbacks.registerVideoSampleCallback,
+                tracks: state.callbacks.tracks,
+            });
+            return null;
+        }
+        : null;
+    const iterator = (0, buffer_iterator_1.getArrayBufferIterator)({
+        initialData: new Uint8Array([]),
+        maxBytes: state.contentLength - endOfMdat,
+        logLevel: 'error',
+    });
+    while (true) {
+        const result = await reader.reader.read();
+        if (result.value) {
+            iterator.addData(result.value);
+        }
+        if (result.done) {
+            break;
+        }
+    }
+    const boxes = [];
+    const canSkipTracksState = (0, can_skip_tracks_1.makeCanSkipTracksState)({
+        hasAudioTrackHandlers: false,
+        fields: { slowStructure: true },
+        hasVideoTrackHandlers: false,
+        structure: (0, structure_1.structureState)(),
+    });
+    const tracksState = (0, has_tracks_section_1.makeTracksSectionState)(canSkipTracksState, state.src);
+    while (true) {
+        const box = await (0, process_box_1.processBox)({
+            iterator,
+            logLevel: state.logLevel,
+            onlyIfMoovAtomExpected: {
+                tracks: tracksState,
+                isoState: null,
+                movieTimeScaleState: state.iso.movieTimeScale,
+                onAudioTrack,
+                onVideoTrack,
+                registerVideoSampleCallback: () => Promise.resolve(),
+                registerAudioSampleCallback: () => Promise.resolve(),
+            },
+            onlyIfMdatAtomExpected: null,
+            contentLength: state.contentLength - endOfMdat,
+        });
+        if (box.type === 'box') {
+            boxes.push(box.box);
+        }
+        if (iterator.counter.getOffset() + endOfMdat > state.contentLength) {
+            throw new Error('Read past end of file');
+        }
+        if (iterator.counter.getOffset() + endOfMdat === state.contentLength) {
+            break;
+        }
+    }
+    const moov = boxes.find((b) => b.type === 'moov-box');
+    if (!moov) {
+        throw new Error('No moov box found');
+    }
+    log_1.Log.verbose(state.logLevel, `Finished fetching moov atom in ${Date.now() - start}ms`);
+    return moov;
+};
+exports.getMoovAtom = getMoovAtom;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/get-sample-position-bounds.d.ts

@@ -0,0 +1,5 @@
+import type { SamplePosition } from '../../get-sample-positions';
+export declare const getSamplePositionBounds: (samplePositions: SamplePosition[], timescale: number) => {
+    min: number;
+    max: number;
+};

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/get-sample-position-bounds.js

@@ -0,0 +1,21 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getSamplePositionBounds = void 0;
+const getSamplePositionBounds = (samplePositions, timescale) => {
+    var _a;
+    let min = Infinity;
+    let max = -Infinity;
+    for (const samplePosition of samplePositions) {
+        const timestampMin = Math.min(samplePosition.timestamp, samplePosition.decodingTimestamp);
+        const timestampMax = Math.max(samplePosition.timestamp, samplePosition.decodingTimestamp) +
+            ((_a = samplePosition.duration) !== null && _a !== void 0 ? _a : 0);
+        if (timestampMin < min) {
+            min = timestampMin;
+        }
+        if (timestampMax > max) {
+            max = timestampMax;
+        }
+    }
+    return { min: min / timescale, max: max / timescale };
+};
+exports.getSamplePositionBounds = getSamplePositionBounds;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/get-sample-positions-from-track.d.ts

@@ -0,0 +1,13 @@
+import type { SamplePosition } from '../../get-sample-positions';
+import type { MoofBox } from '../../state/iso-base-media/precomputed-moof';
+import type { TrexBox } from './moov/trex';
+import type { TrakBox } from './trak/trak';
+export declare const getSamplePositionsFromTrack: ({ trakBox, moofBoxes, moofComplete, trexBoxes, }: {
+    trakBox: TrakBox;
+    moofBoxes: MoofBox[];
+    moofComplete: boolean;
+    trexBoxes: TrexBox[];
+}) => {
+    samplePositions: SamplePosition[];
+    isComplete: boolean;
+};

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/get-sample-positions-from-track.js

@@ -0,0 +1,29 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getSamplePositionsFromTrack = void 0;
+const collect_sample_positions_from_moof_boxes_1 = require("./collect-sample-positions-from-moof-boxes");
+const collect_sample_positions_from_trak_1 = require("./collect-sample-positions-from-trak");
+const traversal_1 = require("./traversal");
+const getSamplePositionsFromTrack = ({ trakBox, moofBoxes, moofComplete, trexBoxes, }) => {
+    const tkhdBox = (0, traversal_1.getTkhdBox)(trakBox);
+    if (!tkhdBox) {
+        throw new Error('Expected tkhd box in trak box');
+    }
+    if (moofBoxes.length > 0) {
+        const { samplePositions } = (0, collect_sample_positions_from_moof_boxes_1.collectSamplePositionsFromMoofBoxes)({
+            moofBoxes,
+            tkhdBox,
+            isComplete: moofComplete,
+            trexBoxes,
+        });
+        return {
+            samplePositions: samplePositions.map((s) => s.samples).flat(1),
+            isComplete: moofComplete,
+        };
+    }
+    return {
+        samplePositions: (0, collect_sample_positions_from_trak_1.collectSamplePositionsFromTrak)(trakBox),
+        isComplete: true,
+    };
+};
+exports.getSamplePositionsFromTrack = getSamplePositionsFromTrack;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/get-seeking-byte-from-fragmented-mp4.d.ts

@@ -0,0 +1,18 @@
+import type { MediaParserTrack } from '../../get-tracks';
+import type { MediaParserLogLevel } from '../../log';
+import type { IsoBaseMediaStructure } from '../../parse-result';
+import type { IsoBaseMediaSeekingHints } from '../../seeking-hints';
+import type { IsoBaseMediaState } from '../../state/iso-base-media/iso-state';
+import type { StructureState } from '../../state/structure';
+import type { SeekResolution } from '../../work-on-seek-request';
+export declare const getSeekingByteFromFragmentedMp4: ({ info, time, logLevel, currentPosition, isoState, tracks, isLastChunkInPlaylist, structure, mp4HeaderSegment, }: {
+    info: IsoBaseMediaSeekingHints;
+    time: number;
+    logLevel: MediaParserLogLevel;
+    currentPosition: number;
+    isoState: IsoBaseMediaState;
+    structure: StructureState;
+    tracks: MediaParserTrack[];
+    isLastChunkInPlaylist: boolean;
+    mp4HeaderSegment: IsoBaseMediaStructure | null;
+}) => Promise<SeekResolution>;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/get-seeking-byte-from-fragmented-mp4.js

@@ -0,0 +1,111 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getSeekingByteFromFragmentedMp4 = void 0;
+const log_1 = require("../../log");
+const video_section_1 = require("../../state/video-section");
+const are_samples_complete_1 = require("./are-samples-complete");
+const collect_sample_positions_from_moof_boxes_1 = require("./collect-sample-positions-from-moof-boxes");
+const find_keyframe_before_time_1 = require("./find-keyframe-before-time");
+const get_sample_position_bounds_1 = require("./get-sample-position-bounds");
+const find_best_segment_from_tfra_1 = require("./mfra/find-best-segment-from-tfra");
+const traversal_1 = require("./traversal");
+const getSeekingByteFromFragmentedMp4 = async ({ info, time, logLevel, currentPosition, isoState, tracks, isLastChunkInPlaylist, structure, mp4HeaderSegment, }) => {
+    const firstVideoTrack = tracks.find((t) => t.type === 'video');
+    // If there is both video and audio, seek based on video, but if not then audio is also okay
+    const firstTrack = firstVideoTrack !== null && firstVideoTrack !== void 0 ? firstVideoTrack : tracks.find((t) => t.type === 'audio');
+    if (!firstTrack) {
+        throw new Error('no video and no audio tracks');
+    }
+    const moov = (0, traversal_1.getMoovBoxFromState)({
+        structureState: structure,
+        isoState,
+        mp4HeaderSegment,
+        mayUsePrecomputed: true,
+    });
+    if (!moov) {
+        throw new Error('No moov atom found');
+    }
+    const trakBox = (0, traversal_1.getTrakBoxByTrackId)(moov, firstTrack.trackId);
+    if (!trakBox) {
+        throw new Error('No trak box found');
+    }
+    const tkhdBox = (0, traversal_1.getTkhdBox)(trakBox);
+    if (!tkhdBox) {
+        throw new Error('Expected tkhd box in trak box');
+    }
+    const isComplete = (0, are_samples_complete_1.areSamplesComplete)({
+        moofBoxes: info.moofBoxes,
+        tfraBoxes: info.tfraBoxes,
+    });
+    const { samplePositions: samplePositionsArray } = (0, collect_sample_positions_from_moof_boxes_1.collectSamplePositionsFromMoofBoxes)({
+        moofBoxes: info.moofBoxes,
+        tkhdBox,
+        isComplete,
+        trexBoxes: (0, traversal_1.getTrexBoxes)(moov),
+    });
+    log_1.Log.trace(logLevel, 'Fragmented MP4 - Checking if we have seeking info for this time range');
+    for (const positions of samplePositionsArray) {
+        const { min, max } = (0, get_sample_position_bounds_1.getSamplePositionBounds)(positions.samples, firstTrack.originalTimescale);
+        if (min <= time &&
+            (positions.isLastFragment || isLastChunkInPlaylist || time <= max)) {
+            log_1.Log.trace(logLevel, `Fragmented MP4 - Found that we have seeking info for this time range: ${min} <= ${time} <= ${max}`);
+            const kf = (0, find_keyframe_before_time_1.findKeyframeBeforeTime)({
+                samplePositions: positions.samples,
+                time,
+                timescale: firstTrack.originalTimescale,
+                logLevel,
+                mediaSections: info.mediaSections,
+                startInSeconds: firstTrack.startInSeconds,
+            });
+            if (kf) {
+                return {
+                    type: 'do-seek',
+                    byte: kf.offset,
+                    timeInSeconds: Math.min(kf.decodingTimestamp, kf.timestamp) /
+                        firstTrack.originalTimescale,
+                };
+            }
+        }
+    }
+    const atom = await (info.mfraAlreadyLoaded
+        ? Promise.resolve(info.mfraAlreadyLoaded)
+        : isoState.mfra.triggerLoad());
+    if (atom) {
+        const moofOffset = (0, find_best_segment_from_tfra_1.findBestSegmentFromTfra)({
+            mfra: atom,
+            time,
+            firstTrack,
+            timescale: firstTrack.originalTimescale,
+        });
+        if (moofOffset !== null &&
+            !(moofOffset.start <= currentPosition && currentPosition < moofOffset.end)) {
+            log_1.Log.verbose(logLevel, `Fragmented MP4 - Found based on mfra information that we should seek to: ${moofOffset.start} ${moofOffset.end}`);
+            return {
+                type: 'intermediary-seek',
+                byte: moofOffset.start,
+            };
+        }
+    }
+    log_1.Log.trace(logLevel, 'Fragmented MP4 - No seeking info found for this time range.');
+    if ((0, video_section_1.isByteInMediaSection)({
+        position: currentPosition,
+        mediaSections: info.mediaSections,
+    }) !== 'in-section') {
+        return {
+            type: 'valid-but-must-wait',
+        };
+    }
+    log_1.Log.trace(logLevel, 'Fragmented MP4 - Inside the wrong video section, skipping to the end of the section');
+    const mediaSection = (0, video_section_1.getCurrentMediaSection)({
+        offset: currentPosition,
+        mediaSections: info.mediaSections,
+    });
+    if (!mediaSection) {
+        throw new Error('No video section defined');
+    }
+    return {
+        type: 'intermediary-seek',
+        byte: mediaSection.start + mediaSection.size,
+    };
+};
+exports.getSeekingByteFromFragmentedMp4 = getSeekingByteFromFragmentedMp4;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/get-seeking-byte.d.ts

@@ -0,0 +1,15 @@
+import type { MediaParserLogLevel } from '../../log';
+import type { M3uPlaylistContext } from '../../options';
+import type { IsoBaseMediaSeekingHints } from '../../seeking-hints';
+import type { IsoBaseMediaState } from '../../state/iso-base-media/iso-state';
+import type { StructureState } from '../../state/structure';
+import type { SeekResolution } from '../../work-on-seek-request';
+export declare const getSeekingByteFromIsoBaseMedia: ({ info, time, logLevel, currentPosition, isoState, m3uPlaylistContext, structure, }: {
+    info: IsoBaseMediaSeekingHints;
+    time: number;
+    logLevel: MediaParserLogLevel;
+    currentPosition: number;
+    isoState: IsoBaseMediaState;
+    m3uPlaylistContext: M3uPlaylistContext | null;
+    structure: StructureState;
+}) => Promise<SeekResolution>;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/get-seeking-byte.js

@@ -0,0 +1,70 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getSeekingByteFromIsoBaseMedia = void 0;
+const get_tracks_1 = require("../../get-tracks");
+const log_1 = require("../../log");
+const find_keyframe_before_time_1 = require("./find-keyframe-before-time");
+const find_track_to_seek_1 = require("./find-track-to-seek");
+const get_seeking_byte_from_fragmented_mp4_1 = require("./get-seeking-byte-from-fragmented-mp4");
+const traversal_1 = require("./traversal");
+const getSeekingByteFromIsoBaseMedia = ({ info, time, logLevel, currentPosition, isoState, m3uPlaylistContext, structure, }) => {
+    var _a, _b, _c;
+    const tracks = (0, get_tracks_1.getTracksFromIsoBaseMedia)({
+        isoState,
+        m3uPlaylistContext,
+        structure,
+        mayUsePrecomputed: false,
+    });
+    const hasMoov = Boolean((0, traversal_1.getMoovBoxFromState)({
+        structureState: structure,
+        isoState,
+        mayUsePrecomputed: false,
+        mp4HeaderSegment: (_a = m3uPlaylistContext === null || m3uPlaylistContext === void 0 ? void 0 : m3uPlaylistContext.mp4HeaderSegment) !== null && _a !== void 0 ? _a : null,
+    }));
+    if (!hasMoov) {
+        log_1.Log.trace(logLevel, 'No moov box found, must wait');
+        return Promise.resolve({
+            type: 'valid-but-must-wait',
+        });
+    }
+    if (info.moofBoxes.length > 0) {
+        return (0, get_seeking_byte_from_fragmented_mp4_1.getSeekingByteFromFragmentedMp4)({
+            info,
+            time,
+            logLevel,
+            currentPosition,
+            isoState,
+            tracks,
+            isLastChunkInPlaylist: (_b = m3uPlaylistContext === null || m3uPlaylistContext === void 0 ? void 0 : m3uPlaylistContext.isLastChunkInPlaylist) !== null && _b !== void 0 ? _b : false,
+            structure,
+            mp4HeaderSegment: (_c = m3uPlaylistContext === null || m3uPlaylistContext === void 0 ? void 0 : m3uPlaylistContext.mp4HeaderSegment) !== null && _c !== void 0 ? _c : null,
+        });
+    }
+    const trackWithSamplePositions = (0, find_track_to_seek_1.findTrackToSeek)(tracks, structure);
+    if (!trackWithSamplePositions) {
+        return Promise.resolve({
+            type: 'valid-but-must-wait',
+        });
+    }
+    const { track, samplePositions } = trackWithSamplePositions;
+    const keyframe = (0, find_keyframe_before_time_1.findKeyframeBeforeTime)({
+        samplePositions,
+        time,
+        timescale: track.originalTimescale,
+        logLevel,
+        mediaSections: info.mediaSections,
+        startInSeconds: track.startInSeconds,
+    });
+    if (keyframe) {
+        return Promise.resolve({
+            type: 'do-seek',
+            byte: keyframe.offset,
+            timeInSeconds: Math.min(keyframe.decodingTimestamp, keyframe.timestamp) /
+                track.originalTimescale,
+        });
+    }
+    return Promise.resolve({
+        type: 'invalid',
+    });
+};
+exports.getSeekingByteFromIsoBaseMedia = getSeekingByteFromIsoBaseMedia;

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/get-video-codec-from-iso-track.d.ts

@@ -0,0 +1,2 @@
+import type { TrakBox } from './trak/trak';
+export declare const getVideoCodecFromIsoTrak: (trakBox: TrakBox) => "h264" | "vp9" | "av1" | "h265" | "prores";

skills/remotion-prompt-video/node_modules/@remotion/media-parser/dist/containers/iso-base-media/get-video-codec-from-iso-track.js

@@ -0,0 +1,58 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getVideoCodecFromIsoTrak = void 0;
+const traversal_1 = require("./traversal");
+const getVideoCodecFromIsoTrak = (trakBox) => {
+    const stsdBox = (0, traversal_1.getStsdBox)(trakBox);
+    if (stsdBox && stsdBox.type === 'stsd-box') {
+        const videoSample = stsdBox.samples.find((s) => s.type === 'video');
+        if (videoSample && videoSample.type === 'video') {
+            if (videoSample.format === 'hvc1' || videoSample.format === 'hev1') {
+                return 'h265';
+            }
+            if (videoSample.format === 'avc1') {
+                return 'h264';
+            }
+            if (videoSample.format === 'av01') {
+                return 'av1';
+            }
+            if (videoSample.format === 'vp09') {
+                return 'vp9';
+            }
+            // ap4h: ProRes 4444
+            if (videoSample.format === 'ap4h') {
+                return 'prores';
+            }
+            // ap4x: ap4x: ProRes 4444 XQ
+            if (videoSample.format === 'ap4x') {
+                return 'prores';
+            }
+            // apch: ProRes 422 High Quality
+            if (videoSample.format === 'apch') {
+                return 'prores';
+            }
+            // apcn: ProRes 422 Standard Definition
+            if (videoSample.format === 'apcn') {
+                return 'prores';
+            }
+            // apcs: ProRes 422 LT
+            if (videoSample.format === 'apcs') {
+                return 'prores';
+            }
+            // apco: ProRes 422 Proxy
+            if (videoSample.format === 'apco') {
+                return 'prores';
+            }
+            // aprh: ProRes RAW High Quality
+            if (videoSample.format === 'aprh') {
+                return 'prores';
+            }
+            // aprn: ProRes RAW Standard Definition
+            if (videoSample.format === 'aprn') {
+                return 'prores';
+            }
+        }
+    }
+    throw new Error('Could not find video codec');
+};
+exports.getVideoCodecFromIsoTrak = getVideoCodecFromIsoTrak;