Same problem here... If I try to play in Quicktime or Real Player, the screen will be either black or white and only play audio. However, I've found that the videos that I've recorder in a lower res play fine on my computer. I downloaded a codec pack from CNET and now I can play the files on wmp on my home computer, but still no luch on QT or RP. I still haven't been able to locate codecs fro those. I also can't play/edit the videos on Adobe Premiere Elements 3.0. Whoever finds the codecs, please post.