Bug#672972: Wheezy: VLC player can't play videos
On Wed, 06 Feb 2013 11:18:19 +0100, Michel Dänzer <daenzer@debian.org>
wrote:
>> The fact that it works just fine when plain X11 output is forced in the
>> preferences proves that X11 would work fine, but is not attempted with
>> default
>> settings.
>>
>> In other words, the problem lies with the OpenGL drivers. I have a
>> similar
>> problem on a laptop also with AMD/ATI chip (although mine has XVideo
>> working
>> fine so hardly a problem). This apparent regression is probably due to
>> VLC
>> using shaders for YUV color space conversion since version 2.0.0.
>>
>> I doubt VLC is at fault here, and I fail to see what else it could do.
>> If
>> shaders are so slow, the driver should not offer them in the first
place.
>
> Why do you think the problem is that 'shaders are slow'?
That's the main difference between OpenGL in VLC 1.1 and VLC 2.0, version
against which the bug was filed. It's also what I'm experiencing with my
own ATI chip.
In any case, since plain X11 works, I gather that VLC is able to decode
the video just fine and the CPU is powerful enough, even with the extra
color space conversion and resolution scaling for unaccelerated X11 output.
--
Rémi Denis-Courmont
Sent from my collocated server
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