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 ยท 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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