Air 3.4/FP 11.4 and StageVideo.attachCamera

Hello, firstly thanks to the hard working Air team for providing a great beta, there are some exciting things in here.  Looking forward to playing with them all.

Im currenly trying to implement the StageVideo.attachCamera functionality - Should this work in AIR ?

It seems no matter what system I try it on.  It either doesn't work at all (Win7 AIR), or works - but only in software (Win7 FP11.4, Air for iOS) - as in, StageVideoEvent.RENDER_STATE status is 'software'

Essentially wondering if anyone has got this successully working yet.