Hi All,
After receiving confirmation of the same behaviour from 2 people with
polaris hardware so I have submitted a bug report.
https://trac.ffmpeg.org/ticket/9608
On 02/12/2021 9:12 pm, Tom W wrote:
Hi All,
I have been experiencing heavy artifacting in dvb-t live TV streams
after corruption in videos with ffmpeg + vaapi + AMD polaris GPU
(rx560). The video in question is a live TV stream and I am able to
reproduce the issue when the recording is played from a local
harddisk. The issue occurs in linux and windows, in kodi, vlc and
ffplay and the videos recover OK when played on nvidia and intel gpu's
on both windows and linux. The video plays ok if I disable vaapi (most
of my testing is done in linux).
I have tried updating mesa to the current release, using a 5.15 kernel
and tried various operating systems (manjaro, libreelec nighty, ubuntu
20.04, windows 10).
output of
ffmpeg -hwaccel vaapi -i Downloads/The\ Project.ts -vcodec rawvideo
-acodec copy -f matroska -sn - | ffplay -report -i -
https://paste.ubuntu.com/p/tP9zrjZ796/
snippets of kodi.log from when the corruption occurs (I can provide
more logs)
2021-11-30 20:36:36.863 T:333115 DEBUG <general>:
ffmpeg[0x56321c011040X]: [mpegts] Packet corrupt (stream = 0, dts =
2007374635).
2021-11-30 20:52:18.128 T:366796 DEBUG <general>:
ffmpeg[0x56321b9c1730X]: [mpegts] Packet corrupt (stream = 0, dts =
2209044203).
2021-11-30 20:52:33.301 T:372941 DEBUG <general>:
ffmpeg[0x7f559c0dec80X]: [image2] Custom AVIOContext makes no sense
and will be ignored with AVFMT_NOFILE format.
vainfo
http://ix.io/3EE0 <http://ix.io/3EE0>
mediainfo of a longer version of the sample video
https://paste.ubuntu.com/p/wthYZhVMMf/
<https://paste.ubuntu.com/p/wthYZhVMMf/>
video of artefacting
https://youtu.be/EJCfi4RP5Pg <https://youtu.be/EJCfi4RP5Pg>
Sample video (200mb) Corruption occurs at around 4m40s.
https://www.dropbox.com/s/aaiwgvsou10aq2w/corruption-recovery-amd.ts?dl=0
I can provide more info and samples if requested.
Anyone have any thoughts on the issue?
Thanks in advance.
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