[mythtv-users] Hauppage HD-PVR Driver, MythTV, or not enough grunt...

[Troy Telford]

On Apr 2, 2010, at 9:53 PM, John P Poet wrote:
> With a 2GHz Core2, you *might* be able to playback an HD-PVR recording
> if you turn off the deinterlacing, but image quality will suffer (on
> 1080i material).  Myth 0.23 uses a newer H.264 decoder than Myth 0.22
> did, and is reported to be 10% more efficient.  If you have not
> upgraded to 0.23RC2, you might want to give it a try.

I'll do that; 

> You don't mention what bitrate you are recording at.  You could try
> lowering the bitrate and see if that helps, but it will also lower
> image quality.

Yeah; that's a case of RTFM... I still haven't figured out how to lower the bitrate yet; but I haven't really looked very hard either.

> Personally, I would not even try to watch high-bitrate HD-PVR material
> with anything less than a 2.8GHz Core2.  However, you can get away
> with a pretty weak CPU, if you use VDPAU.  The HD-PVR produces
> single-sliced H.264, so it does not benefit from multiple cores, and
> instead needs a beefy CPU (or VDPAU) to decode it.

Good to know; (I was wondering if I went the CPU route which would be of more benefit in this situation:  Cores or clocks...

> Given that you can buy a nVidia GT220 based card for as little as $40,
> that is the route I would recommend.  The GT220 based cards will do
> VDPAU with nVidia best deinterlacer, and handle the highest bitrate
> HD-PVR material with ease.

--
Troy Telford
ttelford.groups at gmail.com

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