[mythtv-users] Jitters during playback

Brent Bolin brent.bolin at gmail.com
Sun Jan 29 11:29:41 UTC 2012


On Sat, Jan 28, 2012 at 9:47 PM, Mark Lord <mythtv at rtr.ca> wrote:
> On 12-01-28 11:15 AM, Michael T. Dean wrote:
> ..
>> FWIW, I had been getting a lot of OTA recordings that showed
>> "jitters/pixelation" during playback.  When I switched my profile from
>> VDPAU decode + VDPAU render to ffmpeg decode + VDPAU render, all the
>> issues went away.  I don't think it's a problem with MythTV code, but a
>> problem with VDPAU's ability to cope with small errors in the stream due
>> to small signal issues.
>
> That used to be the case here too.
> But at some point, an NVIDIA driver update cured it,
> and made their decoding pretty much equivalent to myth software decode,
> at least for the situation here.
>
> Cheers
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I would add to my earlier post that I've also updated the Nvidia
driver to current -

NVIDIA-Linux-x86-290.10.run

Release:	11.10
Codename:	oneiric

mythtv-frontend                    2:0.24.2+fixes.20120124

cat /etc/X11/xorg.conf

Section "Screen"
	Identifier	"Default Screen"
	DefaultDepth	24
EndSection

Section "Extensions"
	Option	"Composite"	"Disable"
EndSection

Section "Device"
	Identifier	"Default Device"
	Driver	"nvidia"
	Option	"DPI"	"100x100"
	Option	"TripleBuffer"	"True"
	Option	"NoLogo"	"True"
EndSection


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