Difference between revisions of "Libavcodec regressions"
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| − | == | + | == To be investigated issues == |
| − | + | ||
| + | === RMVB deadlocking === | ||
| + | |||
| + | With threads >= 1 and libav | ||
| + | |||
| + | See https://trac.videolan.org/vlc/ticket/10493 | ||
| − | + | == Open issues == | |
| − | == MTS regression == | + | == Closed issues == |
| + | === MTS regression (worked-around) === | ||
Possibly VLC TS demuxer does not output correct IDR information. | Possibly VLC TS demuxer does not output correct IDR information. | ||
| − | + | Whether the demuxer is wrong or not, it fails with libav, but it works with FFmpeg. | |
See https://trac.videolan.org/vlc/ticket/10140 and http://streams.videolan.org/issues/10140/MTS%20AVCHD%20Lite%20files%20no%20picture%20bug%20since%20v.2.1.1.MTS | See https://trac.videolan.org/vlc/ticket/10140 and http://streams.videolan.org/issues/10140/MTS%20AVCHD%20Lite%20files%20no%20picture%20bug%20since%20v.2.1.1.MTS | ||
| − | == FFv1 v1.3 support == | + | === VC1i === |
| − | See https://trac.videolan.org/vlc/ticket/ | + | Some VC1i sample did not work in libav: |
| + | http://streams.videolan.org/issues/5887/Journey%20to%20the%20Edge%20of%20the%20Universe%20sample.mkv | ||
| + | |||
| + | === FFv1 v1.3 support === | ||
| + | See https://trac.videolan.org/vlc/ticket/9606 | ||
| + | |||
| + | <span style="text-decoration: line-through">The sample here related https://trac.videolan.org/vlc/ticket/8691#no4 is now fixed [[User:J-b|jb]] ([[User talk:J-b|talk]]) 16:30, 28 December 2013 (CET) | ||
| + | </span> | ||
| − | == Lagarith == | + | === Lagarith YV12 direct-rendering === |
| − | + | YV12 broken in libav when using direct-rendering. Numerous reports about that. | |
https://forum.videolan.org/viewtopic.php?f=14&t=115983&hilit=lagarith | https://forum.videolan.org/viewtopic.php?f=14&t=115983&hilit=lagarith | ||
See https://trac.videolan.org/vlc/ticket/7375 and https://trac.videolan.org/vlc/ticket/9700 | See https://trac.videolan.org/vlc/ticket/7375 and https://trac.videolan.org/vlc/ticket/9700 | ||
| + | |||
| + | Samples here: http://streams.videolan.org/issues/7375/YV12.avi and http://streams.videolan.org/issues/7375/mechanical.cut.avi | ||
| + | |||
| + | === Xvid Matrix === | ||
| + | XVid "Bulletproof's Heavy Compression Matrix" fails in libav, works in FFmpeg. | ||
| + | |||
| + | See https://trac.videolan.org/vlc/ticket/7411 and sample here https://trac.videolan.org/vlc/raw-attachment/ticket/7411/sample.avi | ||
| + | |||
| + | Solution here: https://git.libav.org/?p=libav.git;a=commit;h=7716dd9fbbcea2700a100c995df967d5547c2eb9 | ||
| + | |||
| + | === non-SSE2 playback === | ||
| + | VLC fails to play on non-SSE2 machines in libav | ||
| + | |||
| + | See the bugreport here https://trac.videolan.org/vlc/ticket/10203 | ||
| + | and see the numerous complaints on the forum here https://forum.videolan.org/viewtopic.php?f=2&t=115952&p=393815&hilit=athlon#p393815 | ||
| + | |||
| + | Solution here: https://git.libav.org/?p=libav.git;a=commit;h=51daafb02eaf96e0743a37ce95a7f5d02c1fa3c2 | ||
| + | |||
| + | === HUffYUV === | ||
| + | |||
| + | With FFmpeg, HuffYUv is broken. | ||
| + | See https://trac.ffmpeg.org/ticket/3395 | ||
| + | |||
| + | === MXF playback broken - part 1 === | ||
| + | |||
| + | No video on this 1080p50 sample in libav: | ||
| + | http://streams.videolan.org/misc/mxf/1080p50.MXF | ||
| + | |||
| + | === MXF playback broken - part 2 === | ||
| + | |||
| + | No seek after 4GB on this sample in libav http://streams.videolan.org/misc/mxf.zip | ||
| + | |||
| + | See https://trac.videolan.org/vlc/ticket/10208 | ||
| + | |||
| + | [[Category:Dev Discussions]] | ||
Latest revision as of 06:40, 19 March 2019
Contents
To be investigated issues
RMVB deadlocking
With threads >= 1 and libav
See https://trac.videolan.org/vlc/ticket/10493
Open issues
Closed issues
MTS regression (worked-around)
Possibly VLC TS demuxer does not output correct IDR information.
Whether the demuxer is wrong or not, it fails with libav, but it works with FFmpeg.
See https://trac.videolan.org/vlc/ticket/10140 and http://streams.videolan.org/issues/10140/MTS%20AVCHD%20Lite%20files%20no%20picture%20bug%20since%20v.2.1.1.MTS
VC1i
Some VC1i sample did not work in libav: http://streams.videolan.org/issues/5887/Journey%20to%20the%20Edge%20of%20the%20Universe%20sample.mkv
FFv1 v1.3 support
See https://trac.videolan.org/vlc/ticket/9606
The sample here related https://trac.videolan.org/vlc/ticket/8691#no4 is now fixed jb (talk) 16:30, 28 December 2013 (CET)
Lagarith YV12 direct-rendering
YV12 broken in libav when using direct-rendering. Numerous reports about that. https://forum.videolan.org/viewtopic.php?f=14&t=115983&hilit=lagarith
See https://trac.videolan.org/vlc/ticket/7375 and https://trac.videolan.org/vlc/ticket/9700
Samples here: http://streams.videolan.org/issues/7375/YV12.avi and http://streams.videolan.org/issues/7375/mechanical.cut.avi
Xvid Matrix
XVid "Bulletproof's Heavy Compression Matrix" fails in libav, works in FFmpeg.
See https://trac.videolan.org/vlc/ticket/7411 and sample here https://trac.videolan.org/vlc/raw-attachment/ticket/7411/sample.avi
Solution here: https://git.libav.org/?p=libav.git;a=commit;h=7716dd9fbbcea2700a100c995df967d5547c2eb9
non-SSE2 playback
VLC fails to play on non-SSE2 machines in libav
See the bugreport here https://trac.videolan.org/vlc/ticket/10203 and see the numerous complaints on the forum here https://forum.videolan.org/viewtopic.php?f=2&t=115952&p=393815&hilit=athlon#p393815
Solution here: https://git.libav.org/?p=libav.git;a=commit;h=51daafb02eaf96e0743a37ce95a7f5d02c1fa3c2
HUffYUV
With FFmpeg, HuffYUv is broken. See https://trac.ffmpeg.org/ticket/3395
MXF playback broken - part 1
No video on this 1080p50 sample in libav: http://streams.videolan.org/misc/mxf/1080p50.MXF
MXF playback broken - part 2
No seek after 4GB on this sample in libav http://streams.videolan.org/misc/mxf.zip
