0BBC HD LogoA temporary workaround for the ATI / 7MC / BBC-HD problems

–update–
This issue has now been fixed by a driver update from ati. For more info see the latest art­icle on the issue

  • Run regedit
  • Browse to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Video
  • In video there will be sev­eral sub­keys. One of these is for your graph­ics card. To loc­ate it you will have to look through each in turn — each will have a video folder inside it. The “ser­vice” value inside the video key is the clue you need — I have sev­eral that start RDP which is pre­sum­ably related to remote desktop so they’re not right. I also have one which is called atikm­dag. This is the one!
  • When you’ve found the cor­rect sub­key of video expand the key 0000 (if you’ve got the wrong one you prob­ably wont be able to expand 0000)
  • Expand “UMD” and then “DXVA
  • Cre­ate a new string value called VForceUVDH264
  • set the value to 0
  • Reboot. Test BBC-HD. You will get 5–10 seconds of ini­tial cor­rup­tion but play­back should then become nor­mal and should remain that way thereafter

This tweak will dis­able gpu accel­er­a­tion of play­back of all H.264 files — so if you have a blu-ray col­lec­tion you’re going to be decod­ing with the CPU — expect much higher CPU usage. Any mod­ern dual-core CPU should be plenty cap­able however.

Once Microsoft issue a fix for this prob­lem simply go back into regedit and delete the key to restore nor­mal functioning.

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