On Mon, Sep 17, 2018 at 15:19:50 +0100, Adam Harries wrote: > After some more digging, it seems that I need to set some options while > decoding a mov file - at least from reading > https://ffmpeg.org/doxygen/trunk/mov_8c_source.html > > How would I go about doing this? I'm happy to build a new application based > on libavformat, but I'm not sure how to interface with it cleanly.
As far as I can tell from a quick glance, MP4/M4A stores the BPM number in the "tmpo" atom. libavformat/movenc.c has the capability to *write* this atom (I'm not sure ffmpeg makes any effort to convert "BPM" to "tmpo" anywhere though), but I don't see any code for *reading* the atom. I may misunderstand the way the MOV demuxer works though... With some code fiddling, I managed to make libavformat/mov.c recognize the atom (mov_read_udta_string()), but didn't manage to decode it (with the very little effort I put into it). Cheers, Moritz _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
