EVR performance for MPEG-2

[jkohn]

So now that Sage supports EVR I decided it was time to move to Vista and take advantage of the new renderer not only in Sage but also for BluRay. I did the upgrade, even upgraded my vid card from a Radeon 2650 to a 4650.

MPEG-4 performance is great, both in Sage (for MKV's) and in TMT for Blu-Ray. However, my OTA MPEG-2 recordings are now suffering. There's tearing, and the frame rate is jerky at times. I've tried several video decoders with pretty much the same result: ArcSoft, PureVideo, SageTV, and Power DVD. All look pretty awful for my MPEG-2 OTA recordings, particularly the 1080i ones.

It seems to me that MPEG-2 should be easier to play back than MPEG-4, so the results I'm getting are suprising. Any idea what the problem is here? Is there some trick to getting HW acceleration for MPEG-2?

[cychou]

Originally Posted by jkohn

So now that Sage supports EVR I decided it was time to move to Vista and take advantage of the new renderer not only in Sage but also for BluRay. I did the upgrade, even upgraded my vid card from a Radeon 2650 to a 4650.

MPEG-4 performance is great, both in Sage (for MKV's) and in TMT for Blu-Ray. However, my OTA MPEG-2 recordings are now suffering. There's tearing, and the frame rate is jerky at times. I've tried several video decoders with pretty much the same result: ArcSoft, PureVideo, SageTV, and Power DVD. All look pretty awful for my MPEG-2 OTA recordings, particularly the 1080i ones.

It seems to me that MPEG-2 should be easier to play back than MPEG-4, so the results I'm getting are suprising. Any idea what the problem is here? Is there some trick to getting HW acceleration for MPEG-2?

Maybe you can try the MS Mepg Decoder that comes with Vista!
If still not working, maybe try a different version of Radeon driver.