No hardware video decoding on ATI Mobility Radeon HD 3470

Hi all,

does anybody know why accelerated video decoding isn't avaiable on ATI Mobility Radeon HD 3xxx Series? From what I read in the corresponding KB article it works on the desktop counterparts that are based on the same hardware.

In my case I'm using an ATI Mobility Radeon HD 3470 on a T400 with switchable graphics (same as reported in this thread). When watching a video on Youtube (e.g. http://www.youtube.com/watch?v=eI3f4b-b8ig) and displaying video information it says "accelerated video rendering, software video decoding". So hardware video rendering works, but hardware video decoding doesn't! It's acceptable on my machine since it's equipped with a decent fast Intel P8400 CPU, but since my graphics card supports hardware decoding for h264 video it's just a waste of ressources.

Does anybody know if Adobe plans support forhardware decoding with these graphics cards? Or is there even a way to use hardware decoding although not fully supported?

Thanks

Eduard

System Information:

• Windows 7 Prof. x86
• Firefox 10.0.2
• Flash Player 11.1.102.63
• DxDiag report: http://pastebin.com/FKxtBA2i