Adolfo Reyna
100 lines
4.3 KiB
JavaScript
100 lines
4.3 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.generateFfmpegArgs = void 0;
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const crf_1 = require("./crf");
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const get_codec_name_1 = require("./get-codec-name");
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const logger_1 = require("./logger");
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const color_space_1 = require("./options/color-space");
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const truthy_1 = require("./truthy");
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const firstEncodingStepOnly = ({ hasPreencoded, proResProfileName, pixelFormat, x264Preset, codec, crf, videoBitrate, encodingMaxRate, encodingBufferSize, hardwareAcceleration, }) => {
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if (hasPreencoded || codec === 'gif') {
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return [];
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}
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return [
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proResProfileName ? ['-profile:v', proResProfileName] : null,
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['-pix_fmt', pixelFormat],
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// Without explicitly disabling auto-alt-ref,
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// transparent WebM generation doesn't work
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pixelFormat === 'yuva420p' ? ['-auto-alt-ref', '0'] : null,
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x264Preset ? ['-preset', x264Preset] : null,
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// Apply a fixed a timescale across all environments:
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// https://discord.com/channels/809501355504959528/817306238811111454/1437471619089170613
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['-video_track_timescale', '90000'],
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(0, crf_1.validateQualitySettings)({
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crf,
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videoBitrate,
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codec,
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encodingMaxRate,
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encodingBufferSize,
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hardwareAcceleration,
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}),
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].filter(truthy_1.truthy);
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};
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const generateFfmpegArgs = ({ hasPreencoded, proResProfileName, pixelFormat, x264Preset, codec, crf, videoBitrate, encodingMaxRate, encodingBufferSize, colorSpace, hardwareAcceleration, indent, logLevel, }) => {
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const encoderSettings = (0, get_codec_name_1.getCodecName)({
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codec,
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encodingMaxRate,
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encodingBufferSize,
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crf,
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hardwareAcceleration,
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indent,
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logLevel,
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});
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if (encoderSettings === null) {
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throw new TypeError(`encoderSettings is null: ${JSON.stringify(codec)} (hwaccel = ${hardwareAcceleration})`);
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}
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const { encoderName, hardwareAccelerated } = encoderSettings;
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if (!hardwareAccelerated && hardwareAcceleration === 'required') {
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throw new Error(`Codec ${codec} does not support hardware acceleration on ${process.platform}, but "hardwareAcceleration" is set to "required"`);
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}
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logger_1.Log.verbose({ indent, logLevel, tag: 'stitchFramesToVideo()' }, `Encoder: ${encoderName}, hardware accelerated: ${hardwareAccelerated}`);
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const resolvedColorSpace = colorSpace !== null && colorSpace !== void 0 ? colorSpace : color_space_1.DEFAULT_COLOR_SPACE;
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const colorSpaceOptions = resolvedColorSpace === 'bt709'
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? [
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['-colorspace:v', 'bt709'],
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['-color_primaries:v', 'bt709'],
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['-color_trc:v', 'bt709'],
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['-color_range', 'tv'],
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hasPreencoded
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? []
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: // https://www.canva.dev/blog/engineering/a-journey-through-colour-space-with-ffmpeg/
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// "Color range" section
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['-vf', 'zscale=matrix=709:matrixin=709:range=limited'],
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]
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: resolvedColorSpace === 'bt2020-ncl'
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? [
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['-colorspace:v', 'bt2020nc'],
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['-color_primaries:v', 'bt2020'],
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['-color_trc:v', 'arib-std-b67'],
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['-color_range', 'tv'],
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hasPreencoded
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? []
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: [
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'-vf',
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// ChatGPT: Therefore, just like BT.709, BT.2020 also uses the limited range where the digital code value for black is at 16,16,16 and not 0,0,0 in an 8-bit video system.
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'zscale=matrix=2020_ncl:matrixin=2020_ncl:range=limited',
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],
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]
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: [];
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return [
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['-c:v', hasPreencoded ? 'copy' : encoderName],
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codec === 'h264-ts' ? ['-f', 'mpegts'] : null,
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// -c:v is the same as -vcodec as -codec:video
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// and specified the video codec.
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...colorSpaceOptions,
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...firstEncodingStepOnly({
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codec,
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crf,
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hasPreencoded,
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pixelFormat,
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proResProfileName,
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videoBitrate,
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encodingMaxRate,
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encodingBufferSize,
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x264Preset,
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hardwareAcceleration,
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}),
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].filter(truthy_1.truthy);
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};
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exports.generateFfmpegArgs = generateFfmpegArgs;
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