Thanks to mpgsvcd in this thread: http://www.personal-view.com/talks/discussion/335/ptool-3.60d-gh2-avchd-encoder-settings/p1 We now have a greatly improved 720p mode for the GH2, and the first useful bitrate hack for the camera. Play the video below in “Original” quality on youtube to take a look at how the windmill motion is captured. For the most part, this will remove the macro blocking that was evident in this mode due to the low bitrate before the hack.

 
Here is a capture of the actual datastream of the windmill shot.