[mythtv-users] Now it's just plain old jittery

[Greg Stark]

Kevin Kuphal <kuphal at dls.net> writes:

> Greg Stark wrote:
> > Ok, I've defeated the X driver issue reporting bogus dot clocks. I made an
> > LD_PRELOAD library with XF86VidModeGetModeLine that returns a dot clock of 0.
> >
> > But now it's still jittery. It seems to play fine for a second or two and then
> > pause briefly. The system is 80-90% idle though, I don't think it's having
> > troubling keeping up.
> >   
> In looking at my playback with XvMC, I'm getting horrible results with 
> it.  I noticed my logs had:
> 
> 2006-03-28 17:57:38.157 Refresh rate: 16579, frame interval: 33366
> 
> While yours were equal on either side.  And I get also alot of:

Your frame rate is 29.997 fps which is normal for NTSC. 
Your refresh rate is probed as 60.32 which seems rather low for a CRT.

> 2006-03-28 18:00:55.773 NVP: progressive frame seen after 38 interlaced frames
> 2006-03-28 18:00:55.842 NVP: interlaced frame seen after 2 progressive frames
> 2006-03-28 18:00:55.905 NVP: progressive frame seen after 2 interlaced frames

That looks weird to me, where are you getting this video?

> 2006-03-28 18:00:28.104 Trying XvMC port 120
> 2006-03-28 18:00:28.104 VideoOutputXv: No suitible XVideo port found
> 
> I'm concerned also about the last line.  I hope someone with some 
> knowledge may have some input...

Does the next few lines look like this?

2006-03-29 00:19:51.230 VideoOutputXv Error: Could not find suitable XVideo surface.
2006-03-29 00:19:51.246 VideoOutputXv: Falling back to X shared memory video output.
                              *** May be slow ***

What does xvinfo say on your machine?

-- 
greg