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Thank you for the reply, M8R. 
I do have hw-decoding selected in the PowerDVD settings, and you are correct that it shows DXVA "Not in use". I tend to agree that Win8 going to legacy drivers for the HD4xxx series might be the root cause.
So in the absence of a solution (unless someone has one?), rather than wait for drivers or updates, I may try upgrading to an HD5xxx or HD6xxx series card. Can someone confirm whether hardware-decoding works for those cards in Win8 / PDVDv2118a?
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...Hello??
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...Anyone?
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Hi,
I've been using PowerDVD 12 with Win7 for a while, and have had zero issues with gpu-decoding (using an ATI HD4350 PCIe card, CCC drivers) for Blu-ray playback.
However, now that I upgraded to Win8 (PowerDVD 12 v2118a), I am getting a noticeable number of dropped frames because my cpu (an older AMD Athlon II x4) can't keep up during decoding, and I can't seem to find a way to get hardware-decoding working.
I am using the Win8 drivers for HD4xxx (v12.6). From what I'm reading here and elsewhere, this apparently does not include the video-acceleration drivers (AVIVO?) PowerDVD is looking for. I've tried other things, like installing AVIVO separately using the ATI Win7 v11.12 drivers, but no dice.
From the "Information" dialog, PowerDVD is only seeing the DirectX VA. How can I get it to see (and use) the ATI gpu-decoding?
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