Ok, I think I have encountered the oddest issue!! I am using MPEG streamclip to convert a Quicktime file to a .AVI file so that it can be played on a Windows PC system and used in a PC version of PowerPoint. Once the file is convereted, it looks absolutely fine on my mac, but when I pay it on a PC, or even through Fusion running MS Windows the video is replaced by what seems a music visualizer, it displays psychedelic images, instead of the original video and I can still hear the original audio!!! And I swear I haven't been smoking anything...yet. Does anyone know why this is happening?! I don't have a PC version of PowerPoint, but when my client plays it in their PC through PowerPoint the same thing is happening. It seems that the Windows is interpeting the .AVI as a music file, and brings up its music visualizer, replacing the video that is in the file. When I select prooperties in windows, though, it says it is a video file. What is happening, and how can I be able to convert this quicktime to an .AVI without this happening? Help!??!!!