Bug#540723: Subject: vlc: video brightness/contrast/gamma is really off

Gary Dale garydale at rogers.com
Mon Aug 10 15:38:21 UTC 2009

Reinhard Tartler wrote:
> reassign vlc,fglrx-source
> severity wishlist
> retitle 540723 fglrx: video brightness/contrast/gamma is really off
> stop
> Gary Dale <garydale at rogers.com> writes:
>> I tried to move to the open source drivers without any luck so
>> eventually re-installed the closed fglrx driver from Debian/Squeeze.
>> When I did that, I ran into a few problems with my various video players
>> so I revisited the vlc player to see how it was working.
> This really sounds like video driver issues here. I'm reassigning this
> bug to both packages for now. However, since fglrx is developed by
> AMD/ATI, I persume they would be in the best position to actually do
> something about that.
I might agree except that:

1) my desktop display is fine. I didn't have to do anything with gimp, 
gwenview or any of my other desktop applications. It was just the video 
applications that were messed up.

2) the Kafeine fix was a simple setting that was off while mPlayer 
needed a different output to be selected. It appears that the fglrx GL 
implementation is faulty, since I can't get good output from it. However 
both Kaffeine and mPlayer have no problem with normal x11 video. 
Kaffeine picks x11 automatically while mPlayer needed to be told to use it.

Unfortunately vlc's x11 video output, which works fine for the other two 
players, produces bad output. And there doesn't appear to be a way to 
reduce the extreme contrast like there was in Kaffeine.

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