This is what I found out from the camera's website support :
Concerning software for editing movies recorded with the VPC-GH1/GH2
Commercially available software
* The operation of the following software has been verified. This verification is not in lieu of the software manufacturer’s guarantee of operation.
* The following information is valid as of February 19, 2010. Compatibility and other factors may change as a result of possible future software updates by the manufacturer.
Software manufacturer
Product name
ArcSoft
Total Media series
Adobe
Adobe Premiere Elements 8
Nero
Nero 9
* About images recorded in the Full-HD or HD-HR mode
With some applications, video is automatically converted to 30 fps during editing, and the video playback is also 30 fps.