mirror of https://bitbucket.org/ausocean/av.git
78 lines
1.5 KiB
JavaScript
78 lines
1.5 KiB
JavaScript
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// from http://mp4ra.org/codecs.html
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const sampleEntryCodesISO = {
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audio: {
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'a3ds': true,
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'ac-3': true,
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'ac-4': true,
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'alac': true,
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'alaw': true,
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'dra1': true,
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'dts+': true,
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'dts-': true,
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'dtsc': true,
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'dtse': true,
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'dtsh': true,
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'ec-3': true,
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'enca': true,
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'g719': true,
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'g726': true,
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'm4ae': true,
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'mha1': true,
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'mha2': true,
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'mhm1': true,
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'mhm2': true,
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'mlpa': true,
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'mp4a': true,
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'raw ': true,
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'Opus': true,
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'samr': true,
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'sawb': true,
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'sawp': true,
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'sevc': true,
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'sqcp': true,
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'ssmv': true,
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'twos': true,
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'ulaw': true
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},
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video: {
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'avc1': true,
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'avc2': true,
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'avc3': true,
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'avc4': true,
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'avcp': true,
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'drac': true,
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'dvav': true,
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'dvhe': true,
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'encv': true,
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'hev1': true,
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'hvc1': true,
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'mjp2': true,
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'mp4v': true,
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'mvc1': true,
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'mvc2': true,
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'mvc3': true,
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'mvc4': true,
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'resv': true,
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'rv60': true,
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's263': true,
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'svc1': true,
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'svc2': true,
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'vc-1': true,
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'vp08': true,
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'vp09': true
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}
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};
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export type CodecType = 'audio' | 'video';
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function isCodecType (codec: string, type: CodecType): boolean {
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const typeCodes = sampleEntryCodesISO[type];
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return !!typeCodes && typeCodes[codec.slice(0, 4)] === true;
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}
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function isCodecSupportedInMp4 (codec: string, type: CodecType): boolean {
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return MediaSource.isTypeSupported(`${type || 'video'}/mp4;codecs="${codec}"`);
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}
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export { isCodecType, isCodecSupportedInMp4 };
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