My son was in football for 3 years and I recorded all of his games with my Sony DCR-SR47 digital video camera. All are fine. However, since each complete season of his games amounts to about 100GB each, I want to burn copies of each game before I remove the video files to an external backup drive for archiving safety. My problem is that often the games exceed 4.7 & even 8.4GB. I need to know if there is a way to strip out all unnecessary data without losing video / audio quality so that they will each fit on a single dvd? I am also trying to find a way to strip the audio and leave the video intact. Thank you in advance for any help.