MP4 already supports Apple Lossless, and it can be put inside by using muxer=ipod, but it's not tagged as supported in mp4. The mp4ra lists alac as a valid fourcc inside mp4, so it should be supported by spec.
See: https://mp4ra.org/#/codecs --- libavformat/movenc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/libavformat/movenc.c b/libavformat/movenc.c index fea8a86192..18fa3f9b5e 100644 --- a/libavformat/movenc.c +++ b/libavformat/movenc.c @@ -7128,6 +7128,7 @@ static const AVCodecTag codec_mp4_tags[] = { { AV_CODEC_ID_VP9, MKTAG('v', 'p', '0', '9') }, { AV_CODEC_ID_AV1, MKTAG('a', 'v', '0', '1') }, { AV_CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') }, + { AV_CODEC_ID_ALAC, MKTAG('a', 'l', 'a', 'c') }, { AV_CODEC_ID_MP4ALS, MKTAG('m', 'p', '4', 'a') }, { AV_CODEC_ID_MP3, MKTAG('m', 'p', '4', 'a') }, { AV_CODEC_ID_MP2, MKTAG('m', 'p', '4', 'a') }, -- 2.29.2 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
