On 04/12/17 21:45, wm4 wrote: > On Mon, 4 Dec 2017 00:56:36 +0000 > Mark Thompson <s...@jkqxz.net> wrote: > >> On 04/12/17 00:09, Carl Eugen Hoyos wrote: >>> Hi! >>> >>> Attached patch fixes ticket #6717, files without sei can be produced >>> with remuxing and seeking, even if this is a (separate) bug, such >>> files exist in the wild. >>> >>> Please comment, Carl Eugen >> >> File are currently fixable by remuxing with: >> >> -bsf:v 'h264_metadata=sei_user_data=dc45e9bde6d948b7962cd820d923eeef+x264 - >> core 150' > > Is that only in the first packet? Then it doesn't work if you start > playback at a later frame, unless you somehow decode the first packet > anyway.
It adds it to every access unit containing an SPS, which will cover this in most cases. (Though not all, I admit - SEI not being allowed in AVCC extradata means that if the parameter sets are only there then you are stuck.) > IMO libavcodec should detect buggy files without relying on version > info. Unfortunately that is rather difficult in this case - pretty much the only method to have it happen automatically would be to try decoding the whole frame again in the other mode if there is a failure during entropy decoding, which doesn't sound very fun to write. - Mark _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
