The file is just over 9 Gigs. It is 25 minutes long. I made a mistake in my earlier post; it does not have any audio. It is in DVCPro 50 NTSC format and it works fine on my Mac but when putting it on a PC, I just get a white screen. It seems to play the file but because there isn't any audio, I can't be sure. When I press play on Quicktime PC, it starts playing without any error message at all. I get movie info and it gives me the same info that I get in my Mac: 720x480, DVCPro 50 NTSC 29.97 frame rate. I want to do some colour correction on my PC before I transfer it to tape so I don't want to use any compression other than DVCPro 50.