Arch Linux

cosmo

Member

Registered: 2007-05-21

Posts: 14

Videos quality problem (N510 - nvidia ion)

Hi,

I'm running arch on my samsung N510, with its nvidia ion (Geforce 9400M). I've some video quality problems. When images changes go quickly, stripes appear at the top. I made a capture (http://yfrog.com/7acapturewep) that shows the problem, it shows the stripes on the whole image It is not to be considered as my actual problem : during playback I see stripes only at the top of image.

I use the nvidia driver, tried with and without vdpau, and with different video players (mplayer, vlc...), with the same problem.
The videos are xvid, or h.264, HD or not.

Any idea ?

cosmo

Member

Registered: 2007-05-21

Posts: 14

Re: Videos quality problem (N510 - nvidia ion)

up

Malstrond

Member

From: Germany

Registered: 2009-06-03

Posts: 98

Re: Videos quality problem (N510 - nvidia ion)

Try to enable VSync in nvidia-settings.

apaige

Member

Registered: 2008-06-15

Posts: 96

Re: Videos quality problem (N510 - nvidia ion)

What Malstrond said, and disable compositing in xorg.conf.

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

cosmo

Member

Registered: 2007-05-21

Posts: 14

Re: Videos quality problem (N510 - nvidia ion)

Thanks guys, that worked.

But is there a way to get it work with "composite" option enabled ? I read a few things about modelines. Can it help ?

stefanwilkens

Member

From: Enschede, the Netherlands

Registered: 2008-12-10

Posts: 624

Re: Videos quality problem (N510 - nvidia ion)

your problem is called tearing and it's a well known issue:
http://nl.wikipedia.org/wiki/Tearing

the nvidia drivers provide a seperate video output for media players that should prevent this, try:

xvinfo | grep Blitter

i have no tearing with composite enabled on my 6600GT

note that you do have to use the proper vide driver in mplayer. If you use smplayer, it's under options -> video. The nvidia anti-blitter output driver should be listed.

Last edited by stefanwilkens (2009-12-08 12:08:09)

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Arch i686 on Phenom X4 | GTX760

cosmo

Member

Registered: 2007-05-21

Posts: 14

Re: Videos quality problem (N510 - nvidia ion)

Hum...

$ xvinfo | grep Blitter
$

Thanks for the help by the way.

tavianator

Member

From: Waterloo, ON, Canada

Registered: 2007-08-21

Posts: 859

Website

Re: Videos quality problem (N510 - nvidia ion)

If you don't need accelerated 3D, you can use XVideo and compositing with nouveau.  Works decently here.

Last edited by tavianator (2009-12-10 20:20:02)