I recorded my neices wedding for her, and the results are a nightmare. The first tape is fine, but in time for the crucial part, I changed the battery (to a brand new one) and put in a brand new tape. The resulting footage is only 2/3 picture, the remaining third is black, with a pixellated border between the two. There is sound, but it cuts in and out, and sounds like daleks. This is the speeches part, what a disaster.
The camera is a Panasonic, which takes mini dv tapes.
Is there anything I can do to fix the footage, and what might have caused the problem in the first place?