Video problem
Recently took some video of a rather special birthday gathering. As a safeguard, I used a brand new tape by the same company as the camera maker -Panasonic. On trying the replay, the results are awful. The picture breaks up into 'blocky' distortion but this occurs at varying parts of the tape. This distortion doesn't recur at the same point each time. I have checked the camera using a different tape and it records and plays back OK. Any thoughts and/or suggestions would be much appreciated.
TIA