I have canon 60d footage from a tripod of a choir consert. In the original sequence the footage looks great. Once I place that sequence into a new sequence and enable multi camera, I have a double line that is visible both while it is playing and while it is stopped. Both sequences are dslr 24fps. The footage was at 24fps. I have cs5.5 on a 2011 imac with 12 gigs of ram. I have done 30+ wedding videos professionally and not had this issue before.
How can I get clean footage.