On Tue, Oct 19, 2021 at 12:05:19AM +0200, Michael Niedermayer wrote: > Hi > > On Mon, Oct 18, 2021 at 12:15:11PM +0000, Brad Hards wrote: > > ffmpeg | branch: master | Brad Hards <br...@frogmouth.net> | Fri Aug 6 > > 19:16:33 2021 +1000| [7c08cad280a16b346c0a5e0efdfd8333ec54f095] | > > committer: Derek Buitenhuis > > > > libavcodec/libx264: add user data unregistered SEI encoding > > > > MISB ST 0604 and ST 2101 require user data unregistered SEI messages > > (precision timestamps and sensor identifiers) to be included. That > > currently isn't supported for libx264. This patch adds support > > for user data unregistered SEI messages in accordance with ISO/IEC > > 14496-10:2020(E) section D.1.7 (syntax) and D.2.7 (semantics). > > > > This code is based on a similar change for libx265 (commit > > 1f58503013720700a5adfd72c708e6275aefc165). > > > > Signed-off-by: Derek Buitenhuis <derek.buitenh...@gmail.com> > > > > > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=7c08cad280a16b346c0a5e0efdfd8333ec54f095 > > --- > > This code breaks bitexact mode for some files, i have not looked into this > any deeper yet. > > example: > ./ffmpeg -i tickets/5356/framestep_fails.mov -map 0:v:0 -filter:v > "framestep=step=2" -codec:v libx264 -t 0.1 -an -bitexact -y file5414.mp4 && > md5sum file5414.mp4 > 59441c644fc3d269ef6689f1c450abda file5414.mp4 > 62740d54583fd475efd808a638730c1e file5414.mp4 > > > #extradata 0: 49, 0xb4861385 > #software: Lavf59.6.100 > #tb 0: 1/15000 > #media_type 0: video > #codec_id 0: h264 > #dimensions 0: 1920x1080 > #sar 0: 0/1 > 0, 0, 0, 1001, 1879, 0x2fd508ad > 0, 1001, 1001, 1001, 13178, 0xfe8c5a6b, F=0x0 > > #extradata 0: 49, 0xb4861385 > #software: Lavf59.6.100 > #tb 0: 1/15000 > #media_type 0: video > #codec_id 0: h264 > #dimensions 0: 1920x1080 > #sar 0: 0/1 > 0, 0, 0, 1001, 1879, 0x67fb0880 > 0, 1001, 1001, 1001, 13178, 0xf33a5a3e, F=0x0 > > #extradata 0: 49, 0xb4861385 > #software: Lavf59.6.100 > #tb 0: 1/15000 > #media_type 0: video > #codec_id 0: h264 > #dimensions 0: 1920x1080 > #sar 0: 0/1 > 0, 0, 0, 1001, 1879, 0xb39a0891 > 0, 1001, 1001, 1001, 13178, 0x5e155a4f, F=0x0 > > Heres another examples: > ./ffmpeg -i tickets/4012/IMG_4596.MOV -movflags +faststart -pix_fmt yuv420p > -c:v libx264 -c:a aac -bitexact -t 0.5 -vprofile baseline -acodec aac -y > test.mov && md5sum test.mov > the link to the sample file is on: > https://trac.ffmpeg.org/ticket/4012
The current code will pass throught the unregistered user data default, so if input have UUD, I'll cause it. > > > [...] > > -- > Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB > > Into a blind darkness they enter who follow after the Ignorance, > they as if into a greater darkness enter who devote themselves > to the Knowledge alone. -- Isha Upanishad > _______________________________________________ > 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". -- Thanks, Limin Wang _______________________________________________ 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".
