[MPlayer-users] Very slow play with gl default

[Kevin DeKorte]

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On 02/27/2010 10:26 AM, Reimar Döffinger wrote:
> On Sat, Feb 27, 2010 at 09:48:45AM -0700, Kevin DeKorte wrote:
>> On 02/27/2010 09:34 AM, Reimar Döffinger wrote:
>>> On Sat, Feb 27, 2010 at 05:16:12PM +0100, Etienne Buira wrote:
>>>> r30759 plays some "normal" video files (25 fps) at around 1 fps when using
>>>> gl as default output (why that default?).
>>>
>>> Well, because x11 is bad, always and no exceptions.
>>> gl either is really good or makes it really obvious that something is wrong.
>>> My impression was that a lot of people end up using x11 because the forgot
>>> to install the xv headers.
>>> I'd like to void defaulting to OpenGL when software rendering is in use,
>>> however I don't know for sure how to detect that reliably.
>>> Could you send the output of glxinfo on your machine?
>>
>> I actually disagree that x11 is always bad, at least you get a picture
>> with it, it may have tearing or other wierdness, but at least it works.
> 
> x11 is always bad for video IMO. It may be the best available and it
> is useful, but that does not make it not bad.
> 
>> using mplayer gl output when combined with gnome-mplayer. mplayer will
>> crash using SVN r30759. x11, xv and gl2 all work fine. I am using mesa
>> from git.
>>
>> (chopped output, if you want a full backtrace I will be happy to send it)
>>
>> ERROR: X11 error: BadMatch (invalid parameter attributes)
>> ERROR: Failed to get value of property 'sub_demux'.
> 
> Those are very strange, though I guess unrelated.
> 
>> *** glibc detected *** mplayer: double free or corruption (out):
>> 0x0a5c3f60 ***
>> ======= Backtrace: =========
>> /lib/libc.so.6[0x376751]
>> /usr/lib/dri/r600_dri.so(+0x13482)[0xf692c482]
>> /usr/lib/dri/r600_dri.so(+0x21370)[0xf693a370]
>> /usr/lib/dri/r600_dri.so(+0xfcb3a)[0xf6a15b3a]
>> mplayer(glSetupYUVConversion+0xcbc)[0x80a6368]
>> [0x2]
> 
> Looks like a bug in the fragment program compiler or something like that
> to me (well, using mesa git you can hardly complain about bugs...).
> I'd suggest trying -vo gl:yuv=0 - it should at least give you hardware scaling
> and subtitle blending for free over x11 (though xv is probably still a better choice).


I think there might be a bug in mplayer as mplayer from the command line
with -vo gl works fine, only fails when combined with the -wid option.
So maybe that is why the BadMatch is emitted.

Kevin


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