I am currently editing a short movie and when I upload HD video form my Canon HV30 the video quality is great as it should be. But once I start editing everything for some reason the edited part of the video starts to get more and more low quality even choppy. And I go back to look at my original logged clips and they are high quality its only the film that I edit that "decays" if you will. I've never had this problem before the only thing I've done recently to FCP is change the A/V settings on logging and capturing because I had to use a different camera set up for something and now I reset it back guessingly and got it to work(with my hv30). My friend original set up my A/V settings for my HV30. Thanks for your help!