[mythtv-commits] Ticket #2676: Video skips badly w/ XvMC when OSD is up
MythTV
mythtv at cvs.mythtv.org
Mon Nov 13 03:05:22 UTC 2006
#2676: Video skips badly w/ XvMC when OSD is up
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Reporter: leif at dkstat.com | Owner: ijr
Type: defect | Status: reopened
Priority: minor | Milestone: unknown
Component: mythtv | Version: 0.20
Severity: medium | Resolution:
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Changes (by leif at dkstat.com):
* status: closed => reopened
* resolution: worksforme =>
Comment:
I've tried the following, without any improvement:
* Try disabling OpenGL VSync (this is a parameter that you can set when
compiling mythtv from source - it defaults to off in v0.19)
I've tried compiling with and without "OpenGL vsync." This makes no
difference.
As for the other OpenGL option to configure, configure has always said:
"XvMC OpenGL sup. no" even if I don't supply the --disable flag.
* Try using the 'nvidia-settings' control panel to disable Video Texture
Adapter and/or Video Blitter Adapter "Sync to VBlank" checkboxes (on the
"X Server XVideo Settings" page)
In nvidia-settings, OpenGL Settings, Sync to VBlank is disabled. Also
the Texture and Blitter sync to vblank is disabled.
* Try setting this in your "Device" section in your xorg.conf: Option
"NVAGP" "1"
I've tried NVAGP "1" and NVAGP "2."
* Use BOB (2x framerate) deinterlacing
I've tried with and without BOB.
* Try disabling 'Use video as timebase' (TV Settings -> Playback)
This has always been disabled.
* Try using 'Seperate video modes for GUI and TV playback' to set your
resolution to match the resolution of the recording.
When running BOB I use the a 1920x540p mode. When running without I've
tried a 1080i mode.
None of that helped.
I've also tried a low bitrate 480i recording, with BOB to the 1920x540p
mode. It does NOT skip with the OSD up.
For the 480i stream:
Without the OSD up, mythfrontend has 4% CPU.
With the OSD up, mythfrontend has 20-55% CPU, jumping up and down
randomly.
If you'd like CPU info for 1080i where it does skip w/ the OSD, let me
know.
--
Ticket URL: <http://svn.mythtv.org/trac/ticket/2676#comment:2>
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