On Thu, Nov 21, 2024 at 19:06:26 +0100, Ferdi Scholten wrote: > The MP4 container only supports a few audio codecs namely these: > Advanced Audio Coding (AAC) > <https://en.wikipedia.org/wiki/Advanced_Audio_Coding>, Audio Lossless Coding > <https://en.wikipedia.org/wiki/Audio_Lossless_Coding> (ALS), Scalable > Lossless Coding <https://en.wikipedia.org/wiki/Scalable_Lossless_Coding> > (SLS), MP3 <https://en.wikipedia.org/wiki/MP3>, MPEG-1 Audio Layer II > <https://en.wikipedia.org/wiki/MPEG-1_Audio_Layer_II> (MP2), MPEG-1 Audio > Layer I <https://en.wikipedia.org/wiki/MPEG-1_Audio_Layer_I> (MP1), CELP > <https://en.wikipedia.org/wiki/CELP>, HVXC > <https://en.wikipedia.org/wiki/HVXC> (speech), TwinVQ > <https://en.wikipedia.org/wiki/TwinVQ>, Text To Speech Interface (TTSI) and > Structured Audio Orchestra Language > <https://en.wikipedia.org/wiki/Structured_Audio_Orchestra_Language> (SAOL), > Apple Lossless <https://en.wikipedia.org/wiki/Apple_Lossless>, Free Lossless > Audio Codec <https://en.wikipedia.org/wiki/FLAC> (added in late 2018), and > Opus <https://en.wikipedia.org/wiki/Opus_(audio_format)> (added in late > 2018) > > Use a different container like MKV if you want support for almost every > audio codec available
That info is outdated, as ISO/IEC 23003-5 added support for PCM formats in MP4, and that was implemented in ffmpeg: https://trac.ffmpeg.org/ticket/10185 https://github.com/FFmpeg/FFmpeg/compare/d04dbf48fc7474747e27caceeed7153d1c0585e4..d4ee177a36c59b19de474d3713304c7828263cb0 But that unfortunately does not include the codec in question here, AV_CODEC_ID_PCM_MULAW. So you need to re-encode the audio to something else, or use a different container, as Ferdi suggested. Cheers, Moritz _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
