[mythtv-commits] Ticket #13532: Slow drift in a/v sync on non-nVidia system

MythTV noreply at mythtv.org
Sat Dec 14 16:21:40 UTC 2019


#13532: Slow drift in a/v sync on non-nVidia system
----------------------------------+------------------------------
 Reporter:  jpilk                 |          Owner:  mark-kendall
     Type:  Bug Report - General  |         Status:  accepted
 Priority:  minor                 |      Milestone:  needs_triage
Component:  MythTV - General      |        Version:  Master Head
 Severity:  medium                |     Resolution:
 Keywords:  a/v sync              |  Ticket locked:  0
----------------------------------+------------------------------

Comment (by jpilk):

 Newer box, intel i3-2100 4-core @ 3.10 GHz, Fedora 30 and nVidia GT_710
 440.36 at commit 5049d4b

 I have this using OpenGL HQ profile, Standard decoder, max 4 CPUs,
 Deblock, OpenGL YV12, both deinterlacers HQ with no boxes ticked.
 1920x1080 at 25.00fps, H.264 ffmpeg, CPUs 4x 35% to 40%, Deint 2x CPU bwdif,
 playing as a 'Video' with no seektable.

 I'm not seeing a/v drift, and the picture 'waviness' when panning has
 largely gone too, although it's still not perfectly smooth.  It was still
 there when using nvdec decoding and the nvidia adaptive deinterlacer.  The
 nVidia driver says it is synced to the TV display.

 With these settings the viewing quality in continuous playback seems
 similar to that from DLNA, or the leanback frontend for FireTVstick 4k in
 a format that it supports.

-- 
Ticket URL: <https://code.mythtv.org/trac/ticket/13532#comment:9>
MythTV <http://www.mythtv.org>
MythTV Media Center


More information about the mythtv-commits mailing list