[Libav-user] formats that support variable frame rate
mrfun.china at gmail.com
Mon Jan 30 00:51:34 EET 2017
2017-01-24 15:54 GMT+11:00 YIRAN LI <mrfun.china at gmail.com>:
> 2017-01-24 10:57 GMT+11:00 Carl Eugen Hoyos <ceffmpeg at gmail.com>:
>> 2017-01-23 18:31 GMT+01:00 John Stebbins <stebbins at jetheaddev.com>:
>> > What I know about muxers is:
>> > MP4,MOV - yes
>> Just to make sure:
>> libavformat does not support vfr in mov (but avi works fine)
>> Hi Carl,
> This is the mov file I generated with ffmpeg-2.2.1 which is a quite old
> version. https://dl.dropboxusercontent.com/u/89678527/30.mov
> The frames I send to av_write_frame is in total 1 min long. 30 fps in
> first 1/3 min, 30*3/4 fps in 2nd 1/3 min, 30 * 1/2 fps in 3rd 1/3 min.
> While you say libavformat doesn't support vfr in mov, that file plays
> quite well. Could you have a look at the file to see if there's any problem?
Could you elaborate how/why ffmpeg's implementation of mov is unable to
produce valid vfr videos because we do need to support vfr output via
> Please remember to not top-post here, it is considered rude.
>> Carl Eugen
>> Libav-user mailing list
>> Libav-user at ffmpeg.org
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