Saturday, January 24, 2009

Tearing while playing video with mplayer on Ubuntu

I had a slight tearing problem while playing video with mplayer on my Ubuntu 8.10 machine. My machine has a Intel i945 graphics card with the i915 driver. This is how I solved it.

In my case the problem was that mplayer used wrong xvideo adaptor.
$ mplayer -v file.avi
using Xvideo port 97 for hw scaling

So it's using port 97.

Running xvinfo displays information about the xv xorg extension. Two adaptors in my case; one bad and one good. Mplayer is unfortunately using the bad one because it always picking number #0.

Relevant parts from xvinfo:
Adaptor #0: "Intel(R) Textured Video"
port base: 97
Adaptor #1: "Intel(R) Video Overlay"
port base: 113

Port 97 is Textured Video and port 113 is Video Overlay. The -vo parameter can be used to tell mplayer which adaptor to use.
mplayer -vo xv:port=113 file.avi

And bam! That's it.


Anonymous said...

Thanks a lot. I had the same problem and cannot understand how to fix it. Now it is ok :)

log69 said...

Thanks a lot here too! Got the very same problem. Didn't know this trick.

Have a nice day! ;)

Anonymous said...

Thanks! This was very good solution. Also resolves issue with video playback on rotated full hd display.