Opened 6 years ago

Closed 20 months ago

Last modified 20 months ago

#11246 closed Bug Report - General (Abandoned)

playback jitter of non-ideal video modes

Reported by: blm-ubunet@… Owned by:
Priority: minor Milestone: unknown
Component: MythTV - Video Playback Version: 0.25-fixes
Severity: medium Keywords:
Cc: Ticket locked: no

Description

mythtv0.25+fixes-git lucid 10.04 vdpau. This commit causes high playback jitter for this user (& couple of others on *buntu forums) with non-ideal video modes. This commit does not improve playback (IMO) for users with framerate exact video modes. http://www.mythtv.org/pipermail/mythtv-commits/2011-January/077008.html.

I have been using patch for 6 months & monitoring the jitterometer in the OSD. My display is set to 1080i60 but it can work with i50 & 720p60. Tested with 1080p24, 1080i50, 576i50 & NTSC DVD. With display set to 60Hz mode there is no jitter for p24 & NTSC DVD & low jitter for i50 media.

I note that XBMC has a setting to switch between the different video timing based on the display or recording timing.

Attachments (2)

diff-dump2.txt (2.1 KB) - added by blm-ubunet@… 6 years ago.
jitter mythplayer
mythtvgitdiff-master-refresh-jitter.txt (2.6 KB) - added by blm-ubunet@… 6 years ago.
0.28 patch to fix refreshrate jitter reintroduced by recent commit to help sick AVI files

Download all attachments as: .zip

Change History (5)

Changed 6 years ago by blm-ubunet@…

Attachment: diff-dump2.txt added

jitter mythplayer

Changed 6 years ago by blm-ubunet@…

0.28 patch to fix refreshrate jitter reintroduced by recent commit to help sick AVI files

comment:1 Changed 5 years ago by blm-ubunet@…

This ticket can be closed on master 0.28. With recent commits to mythplayer.cpp (from LWR) to fix the seeking PTS stuttering..the patch in this ticket is not required & actually makes jitter worse.

So right now in master there is no excess frame jitter playing 50Hz media with 60Hz refreshrate display. Thanks.

comment:2 Changed 20 months ago by Peter Bennett

Resolution: Abandoned
Status: newclosed

comment:3 Changed 20 months ago by blm-ubunet@…

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