Unfortunately videos can only play under the
DirectX7 subsystem.
But this subsystem is under windows 8 very slowly (also slow and flickering opening of screens)!
I ask you to revise it and to remove the current restrictions for videos on screen.
Please think also of the bug, that is for a HD video an HD screen required.
hth
PS:
Perhaps this helps further:
http://www.codeproject.com/Articles/364 ... h-the-VMR9