[mythtv-users] PVR-350 TV and native Recording smooth, Transcoded and other video choppy

[Kevin Kuphal]

Paul Fielding wrote:

> Ok, I dunno where else to look.  I've searched my brains out and tried 
> just about everything.    Using:
>  
> Knoppmyth R5A22
> SP130000 motherboard
> PVR-350
>  
> ivtv kernel 0.4.0
> ivtvdev - not sure what version, but not current. Found at:
> http://membres.lycos.fr/badzzzz/ivtvdev_drv.o.gz
>  
> - PVR 350 is enabled in Mythtv
>  
> SYMPTOMS:
> - Watching TV gives crystal clear playback.
> - Watching untranscoded TV recordings is clear.
> - Watching DVDs gives extremely poor framerate
> - Watching transcoded recordings gives poor framerate
> - Watching downloaded mpg videos gives poor framerate
>  
> This is all happening through the PVR-350 tv out.
>  
> I've tried everything under the sun I can find from a million 
> different sources, and right now I'm simply amazed I haven't 
> completely cratered my mythtv installation.  
>  
> I tried going to the latest ivtvdev drivers, but when I do it fails 
> with the following:
>  
> (II) v4l driver for Video4Linux
> (II) IVTVDEV_TST: driver for framebuffer: PVR-350
> (II) Primary Device is: PCI 01:00:0
> (WW) ivtvdev: No matching Device section for instance (BusID 
> PCI:0:20:0) found
> (EE) No devices detected.
> Note that my card is at 0x14 (which translates to 20 I believe)
>  
> Switching back to the older driver works fine except for the frame 
> rate problems listed above.
>  
> Any thoughts?

Sounds like you're not using the XV accelerated framebuffer driver for 
your PVR-350 output.  This is causing your non-MPEG2 recordings 
(although I wonder what is happening with your DVD playback, maybe your 
DVD player software isn't using PVR-350 acceleration either?) to have 
poor performance.

I don't have this card, but I believe you can download the X driver here:
http://ivtvdriver.org/index.php/Download#Stable_release

Kevin

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