[mythtv-users] h.264 playback issues

Owen Townend owen.townend at gmail.com
Thu Apr 30 23:54:42 UTC 2009


2009/5/1 Greg Woods <greg at gregandeva.net>:
[snip]
> A minor problem is, I sometimes get a rolling horizontal band of
> distortion. It can appear anywhere on the screen, and slowly rolls down
> until it hits the bottom of the screen, then disappears. It kind of
> looks like what I used to see on old analog TV's when I was a kid and
> the reception wasn't all that great. Is this what is called "tearing"?
> This is fairly minor because while it is noticeable, it doesn't make the
> recording unwatchable. I suspect this is an nvidia driver issue (I'm
> running 180.41), but I hesitate to upgrade the driver due to recent
> threads saying the newer driver was causing problems.
[snip]

Hey,

Something I read in a previous thread may help solve this:
add the triple buffering[0] option to your xorg.conf

R. G. Newbury <newbury at mandamus.org>, 30 April 2009 12:54
> 2) Add  'Option "TripleBuffer" "true" to the Device section of your
> xorg.conf file. This 'steals' memory which the driver has allocated
> for 3D and uses it for 2D buffers. Since TV playback is pure 2D
> this is what we want. (After editing xorg.conf use Control-Alt-Backspace
> to re-start  your desktop.)

cheers,
Owen.

n.b. I don't use an nvidia card... Just passing on what I've read,

[0] http://en.wikipedia.org/wiki/Triple_Buffering


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