[FFmpeg-devel] [Bounty] Impl. check if input h264 P/B frame ref's frame prior to last I

Carl Eugen Hoyos cehoyos at ag.or.at
Mon Feb 22 18:23:06 CET 2016


Andrey Utkin <andrey_utkin <at> fastmail.com> writes:

> As it was discussed today on #ffmpeg and #ffmpeg-devel, 
> only IDR frames are considered safe seek points by design 
> of H.264.

Since valid H264 streams without IDR (and without I) frames 
exist, this cannot be true.

Do I understand correctly that your issue is that FFmpeg 
doesn't tell you if an I-frame in an H264 stream is an 
IDR frame or not?

Carl Eugen



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