[vdr] Xine and CPU Usage

Chad Flynt hoochster at sofnet.com
Tue Jan 31 01:23:21 CET 2006


Niko Mikkila wrote:

>On Mon, 30 Jan 2006 13:41:26 -0600
>Chad Flynt <hoochster at sofnet.com> wrote:
>
>  
>
>>Niko Mikkila wrote:
>>
>>    
>>
>>>Actually I have a _very_ similar situation with Matrox G450 and an
>>>Athlon64 2800+ on Via K8T800 Pro chipset. I use X.org, but the G450
>>>seems to be awfully slow and I can't even display 720p properly. I
>>>always thought the problem was that the card just wasn't fast enough (I
>>>didn't really test HDTV on my earlier system), but your experience on a
>>>slower system shows that there must be something else going on. I use a
>>>completely 64-bit system and I have set the Matrox X drivers to use AGP
>>>4x, but that doesn't help much. Even mga_vid with MPlayer causes about as
>>>high CPU usage as Xv output. This seems like some sort of hardware
>>>incompatibility, or otherwise bad AGP support for the Via K8T800 -
>>>Matrox Gxxx combination. I've been troubled by this for some time, so
>>>please tell if you find any solution :)
>>>
>>>
>>>      
>>>
>>Will do, glad to hear  you run the same type of chipset, might be 
>>hitting you up on any problems I face on the 64bit setup.  Never ran VDR 
>>on 64bit yet, hope you don't mind.
>>    
>>
>
>Not at all. I've had no problems with VDR or any of the few plugins I use.
>I even run Dxr3 as a secondary output to a TV in another room. 64 bits is
>not a problem as long as you can compile the stuff yourself.
>
>  
>
>>I assume you are doing DVI out to your TV for the HDTV part of it.
>>    
>>
>
>Well, I can't actually receive any HDTV broadcasts yet, but I've tested
>a few files freely available on the net. Apples HD trailers are pretty
>good for testing as long as you keep in mind that they are H.264 so
>decoding them is pretty slow anyway and XvMC doesn't help with that.
>MPEG-2 clips are harder to find, but you probably don't have that problem.
>As a display I use a 21" CRT monitor and an XGA projector connected with
>plain VGA.
>
>  
>
>>Cuz I never see my projector truly say 720p or whatnot when I tune to
>>a HD Channel, just looks better.
>>    
>>
>
>If you haven't set up a 1280x720 resolution for framebuffer, you won't
>get it. Instead Xine will resize to 720x576 or whatever you use
>normally. It will look better because the source is very high quality
>compared to SDTV broadcasts.
>
>At least Matrox G450 doesn't even support 1280x720 video overlays, so I
>just crop to 1024x720 (with the actual screen resolution being
>1024x768). So far I've only tested HDTV with MPlayer, but cropping
>might be possible with Xine too. With GeForce FX 5200 you won't have
>this problem, so don't worry. Just set up a 720p resolution for X.org
>and run Xine :)
>
>  
>
>>[...]
>>
>>    
>>
>
>Oh, there is one problem with 64-bit Xine that I now recalled. In 64-bit
>mode the MMX and SSE acceleration features are partly disabled,
>apparently because the 64-bit support in Xine has not been finished
>properly. This also disables Greedy2Frame, GreedyH and TomsMoComp
>tvtime deinterlacing filters, so that you can't do any good-quality
>deinterlacing at all. I brought this up on the xine-devel mailing list
>a while ago, but the main Xine developers are busy outside the project,
>and people haven't really demanded a fix yet. I'm using a fully patched
>Xine with Greedy2Frame without problems myself, but it is not easy to
>get working from scratch. I can put the patches and the patched sources
>on my homepage when I find enough free time between work and studies.
>Maybe next weekend.
>
>--
>Niko Mikkilä
>
>_______________________________________________
>vdr mailing list
>vdr at linuxtv.org
>http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
>
>  
>
That would be great, well my projector only goes up to 1024x768 so will 
see where we go, I run my Xbox 360 in component to it and it does all 
the hdtv modes and shows up that way on the PJ, so just didn't know if I 
would truly see the PJ go into that mode.  So curious if possible on 
this cheaper pj.  Well will be hopefully getting things started tonight, 
but yes when time permits, and believe me I know all about the time, I 
have 3 little girls and a teenager, and work full time and try and 
maintain a VDR website lmao so I know all about time lol, please do let 
me know of any patches etc I might need.

Thanks again.



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