I have asked this to the N9 developer who's in the camera/video/audio middleware s/w team. He said he only does the camera part and will ask the guy who sits next to him who does the video playback part when he goes into work. (so will need to wait till Monday I guess) He's going to check if it is supposed to be able to handle Main profile H264. (High profile is a definite no go I believe) But he said he is sure that N9 supports 720p H264 Base profile.