[Cin] pcm in mp4

Andrew Randrianasulu randrianasulu at gmail.com
Sun Nov 21 06:16:03 CET 2021


apparently way some muxers do it quite different from normal, so not as
simple as adding codec_id to some table...

On Sunday, November 21, 2021, Andrew Randrianasulu <randrianasulu at gmail.com>

> from https://amp.reddit.com/r/ffmpeg/comments/ep61ig/
> uncompressed_audio_in_mp4_workarounds_or_hacks/
> ====
> You can use mp4box to mux PCM audio in MP4.
> If the audio is in a separate file,
> mp4box -add h264.mp4#video -add pcm.mov#audio -new h264pcm.mp4
> If it's in the same file
> mp4box -add h264pcm.mov -new h264pcm.mp4
> 2
> Reply
> jvaratos
> ·
> 1y
> Success! This works perfectly and premiere accepts the file with ease.
> Thank you for this info!
> For those attempting similar things, I used FFMPEG to create a standalone
> m4v file with a h.264 stream (encoded to my liking) as well as a mov file
> containing just a PCM audio stream (mp4box would not accept a wav file for
> some reason). Mp4box accepted both of those with the syntax mentioned above
> and gave me a single mp4 file that premiere was happy with.
> ====
> may be ffmbc also accepts this. If 'support' was as simple as 'id case
> somewhere' - we probably can patch our ffmpeg too
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