How do Cyclic Redundancy check (CRC) errors happen? I was watching a movie that I had just converted to Xvid and about ten minutes from the end I get a crc error and cant watch the rest of the movie. How do these errors occur and is there any way to prevent them? Could it have been because I overburnt the cd I was watching from? I checked all my other over burnt xvids and none of them had this problem.