Further to my post yesterday, I discovered, via Nigel Dessau’s blog (closed by AMD since this article was published), that ATI will be releasing a fix for this issue in the Catalyst 10.2 (February 2010) release. This is fantastic news, thank you ATI!
For those that just can’t wait, an early release version of the 10.2 drivers is available from station-drivers.com. It is listed as “Version 10.1 (8.70RC1) WHQL“. Having tested this personally I can confirm success with a recorded episode of “life” from BBC HD, played back with my Radeon HD4850 with DXVA decoding enabled (~2-5% CPU usage with a Core2Duo E6300)
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