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tearing with mplayer under R6
http://forums.linhes.org/viewtopic.php?f=21&t=20932		 Page 1 of 1
Author:  graysky [ Sat Mar 20, 2010 5:37 am ]
Post subject:  tearing with mplayer under R6
Has anyone else noticed video tearing when watching videos under R6 using mplayer (within mythvideo)? For example, on high motion scenes of videos. I also have xbmc on the same box and when I watch the same video under its player, playback is smooth as silk. This seems to be unique to mplayer for some reason.
Author:  christ [ Sat Mar 20, 2010 10:41 am ]
Post subject: 
Hi Graysky,

I'm guessing you are using VDPAU so here is the suggestion from the mythtv wiki:
http://www.mythtv.org/wiki/Vdpau#Troubleshooting

I did the xorg change only and that solved my problem on all of my front ends. Specifically:
Code:
sudo nvidia-xconfig --no-composite


I also added the following to xorg.conf Device section:
Code:
Option         "TripleBuffer" "True"
Author:  graysky [ Sat Mar 20, 2010 10:47 am ]
Post subject: 
Should have mentioned, no VDPAU on this machine (still using an SDTV) :)
Author:  christ [ Sat Mar 20, 2010 11:09 am ]
Post subject: 
Might still be worth a try depending on what connections you are using.

one of my front ends is using an 8400GS with s-video and VDPAU to a Sony XBR and I added the TripleBuffer option but not the composite mode.

In general I only saw the tearing on my HDMI connections.
Author:  graysky [ Sun Mar 21, 2010 6:07 am ]
Post subject: 
christ wrote:
I did the xorg change only and that solved my problem on all of my front ends. Specifically:
Code:
sudo nvidia-xconfig --no-composite


Thanks for the suggestion. Do you know how to undo the --no-composite tweak in case it makes things worse?
Author:  Greg Frost [ Sun Mar 21, 2010 2:10 pm ]
Post subject: 
All it does is edit your xorg.conf
You will have to restart Xorg for it to take effect.
It also makes a backup of the old one, but if you do that yourself and put it somewhere safe, you can revert by replacing xorg.conf and restarting x.

Incidentally, this solved tearing on my acer aspire revo (using VDPAU).
Author:  graysky [ Mon Mar 22, 2010 2:50 pm ]
Post subject: 
Thanks for the tip. It added the following:

Code:
Section "Extensions"
    Option         "Composite" "Disable"


Unfortunately, after restarting X, no change :(

The odd thing about this problem is that it only seems be mplayer; if I watch the same video from xbmc's player (whatever it is), the playback is smooth.
Author:  christ [ Mon Mar 22, 2010 5:16 pm ]
Post subject: 
It may be in your mplayer options. Are they the same for the two? Are you picking up the same version of mplayer?

I also add the following parms for mplayer which helped with some stutter:
Code:
-cache 8192 -cache-min 25
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