I shot some footage with my canon hv20 i n 1080i HD. After I digitized it using my macbook, I transfered the files to my PC. I have quicktime pro 7.2, all the only thing I see is a white screen with sound. I'm guessing my PC doesn't have the right codecs to support the HD footage, but I have the latest version of quicktime so I don't know what he problem is??