Bug#539206: video-radeon: OSD flickering in mplayer/xv

[Michel Dänzer <daenzer@debian.org>]

On Wed, 2009-07-29 at 21:25 +0200, Michal Suchanek wrote:
> Package: xserver-xorg-video-radeon
> Version: 1:6.12.2-3
> Severity: normal
> File: video-radeon
> 
> 
> Running mplayer with xv output on this hardware causes flickering with
> both textured video and overlay.
> 
> Only the OSD and subtitles flicker, and only in the part of the screen
> where the video is displayed.

I'm afraid that's an inherent issue of textured video, as in contrast to
a video overlay the video and other elements overwrite each other.

> The gl output prevents this flickering but causes occasional video
> tearing, probably because it is simply slow.

This probably works due to double buffering. In the future this may be
possible with XVideo as well by using a pixmap as the 'back buffer', but
it's not implemented yet, though somebody posted a patch for it to an
upstream mailing list a while ago.

> I have never observed such flickering with the intel driver or Radeon
> 9200 card.

Using textured video as well, not an overlay?


-- 
Earthling Michel Dänzer           |                http://www.vmware.com
Libre software enthusiast         |          Debian, X and DRI developer