DVXA stopped working with Catalyst 9.1

[titaniumx3]

I've been happily using MPC Home Cinema with CoreAVC to play 720p/1080p mkv files and getting video acceleration from the DVXA support in MPC-HC.

But since updating to Catalyst 9.1 drivers all these files don't play anymore and I just get a black screen in MPC-HC. If I turn off the "H264/AVC (DVXA)" filter MPC-HC it plays the files but obviously I'm no longer getting video acceleration.

I'm using WinXP SP3, CoreAVC (1.8.5) with HD4870 and Cat 9.1 drivers.

Anyone else experiencing this?

 

[muon]

Depending on the CPU, I bet your actually using less electricity using the cpu.

30% load on a e8400 would be nothing compared to having the hd 4870 shift to uvd clocks.

 

[titaniumx3]

Playback without DVXA is not an issue since, I'm using CoreAVC which is multithreaded and on my Q9550 I get around 15% cpu utilisation on 1080p files.

... but that's not the issue, if it was working before with 8.12 drivers, why isn't it working anymore?

Is anyone else experiencing this?

 

[mince bigalow]

I had a problem with DXVA too, using the 9.1 drivers:

http://forums.overclockers.co.uk/showthread.php?t=17971338

 

[FrenchTart]

I'm using 9.1 and no problems in DXVA with MPC cinema.

Vista64 SP1, upgraded from 8.12 > 9.1

edit: Info just for comparison, so you know it's not necc something insurmountable.

 

[titaniumx3]

It may be XP problem then. I will probably revert to 8.12 drivers to check if it is indeed the drivers.

That said, I'm not sure if I should, 1080p video runs perfectly fine without GPU acceleration.