[mythtv-users] XvMC and GeForce 7300

[Johnny Russ]

Steve Wilson wrote:
> --- Misty P <mistyp at thekorn.net> wrote:
>
>   
>> Johnny Russ wrote:
>>     
>>> Supposedly if you use xvmc-opengl in your playback
>>>       
>> profiles, then you
>>     
>>> can also use the opengl OSD and it should render
>>>       
>> in color. This was
>>     
>>> what
>>> I understood from the things read.
>>>       
>> I, too, took the time to get XvMC working on my
>> 7300.  I was able to follow 
>> the directions in the wiki, and after using envy my
>> CPU usage decoding ATSC 
>> HD is now officially in the cellar!  (...that's a
>> *good* thing.  :)  Also 
>> lets me know XvMC really *is* working!)
>>
>> However, the OSD is in greyscale.  I tried adding
>>
>> Section "Device"
>>      ...
>>      Option "UseEvents" "true"
>>      Option "XvmcUsesTextures" "false" (necessary
>> for color Chromakey OSD)
>>      Option "NVAGP" "1" (some users report 2 works
>> better, may not be 
>> applicable to newer driver versions)
>> EndSection
>>
>>
>> to the xorg.conf and restarting X...  no effect.
>>
>>
>> I tried switching from xvmc-blit to xvmc-opengl, no
>> effect. Though looking 
>> at the frontend log, I'm not surprised:
>>
>> 2008-04-15 17:51:53.115 VideoOutputXv: XvMC Adaptor
>> Name: 'NV17 Video 
>> Texture'
>> 2008-04-15 17:54:15.534 VideoOutputXv: Desired video
>> renderer 'xvmc-opengl' 
>> not available.
>> 2008-04-15 17:54:18.342 VideoOutputXv: Desired video
>> renderer 'xvmc-opengl' 
>> not available.
>>                         codec 'MPEG2 IDCT' makes
>> 'xvmc-blit,' available, 
>> using 'xvmc-blit' instead.
>>
>>
>> I tried switching from chromakey to opengl for the
>> OSD renderer, no effect. 
>> (But that's not really surprising, since xvmc-opengl
>> isn't available, 
>> switching the OSD renderer shouldn't do anything.)
>>
>>
>> And yes, in the frontend logs, I get complaints
>> about chroma keying being 
>> unavailable:
>>
>> 2008-04-15 17:55:09.079 VideoOutputXv: Ack!
>> Disabling ChromaKey OSD
>>                         We can't use ChromaKey OSD
>> if chromakeying is not 
>> supported!
>>
>>
>> So it appears as though the tradeoff is a B&W OSD
>> with XvMC, or doing 
>> without XvMC alltogether.  And XvMC-openGL appears
>> to be a non-starter.
>>
>>
>>
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>>     
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>   
>
> Thanks, I had a feeling I wouldn't be able to get
> color OSD to work with the 7300. I would use the grey
> one but on standard def the OSD resolution is messed
> up so it's hard to read the OSD. I found a work around
> though as I setup a match criteria to use standard
> ffmpeg at standard def and XvMC at high def so only on
> a few channels do I get a grey OSD which is worth it
> since the xvmc performs much better. Thanks for the help.
>
>
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>   
You can also try using a different OSD theme. You can change the OSD 
theme independent of the regular MythTV theme. I have found that retro 
is much easier to read. I use that for my OSD theme and it works great 
in color and in grey.
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