H.264 hardware acceleration with GPU under XP

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Seasport

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#20824 7-Apr-2008 11:08

I've got DVB-T HD working with DVBViewer OK. However, on my 3GHz P4 the decoding is too slow. CPU at 100% for 1080i on TV3.

Curently using the codec which comes with Twinhan digital TV (which is a version of the PowerDVD codec). Seems to work fine at least with s/w decoding. Geekiegeek has reported that he has got this codec working with h/w acceleration as well.
See: http://www.geekzone.co.nz/forums.asp?ForumId=84&TopicId=20747

I've got an 8500GT GPU which supports hardware H.264. If I can get the h/w decoding working, I think all should be sweet on my PC. I know that you can get this working with Vista and EVR with the PowerDVD codecs. I think you may also be able to get it working with XP as well. Seems you need a non offical ForceWare XP driver 165.01 for the Nvidia GPU. See this link:

http://www.dvbnetwork.eu/index.php?option=com_fireboard&Itemid=26&func=view&id=194&catid=2&limit=20&limitstart=20

Anyone tried this yet? Want to give this a go before I fork out yet more money for a Vista upgrade.

davidcole

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#121782 7-Apr-2008 14:32

I thought EVR on XP was available after installing SP3....

Haven't tried it meself not having a video card or tv big enough..

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sbiddle

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#121790 7-Apr-2008 14:44

davidcole: I thought EVR on XP was available after installing SP3....

Haven't tried it meself not having a video card or tv big enough..

I don't believe EVR under XP actually supports DXVA2 hardware acceleration.

PowerDVD under XP uses it's own custom hardware acceleration so providing you are using the PowerDVD codec then it should work.

Seasport

50 posts

Geek

#121801 7-Apr-2008 15:23

Thanks. Do you know how I enable the hardware decoding to work with DVBViewer? Do I do this is PowerDVD or DVBViewer or both?

I note that I can select the EVR option in DBViewer with XP but not sure that it does anything.

Seasport

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#121803 7-Apr-2008 15:24

Oh, I'm using XP MCE btw.

sbiddle

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#121804 7-Apr-2008 15:25

You just need to enable HW acceleration in PowerDVD - there are no settings to change in DVBViewer other than (probably) sticking with VMR9 under XP. I suspect HW acceleration won't work under XP using EVR.