Why is there a limit of 2 hours per disc? Can you transfer longer videotapes?

While it is possible to fit more than 2 hours of video on a DVD, we prefer not to because of quality degradation. In order to fit more data on a DVD-R more compression is required. MPEG2 compression used in DVD's is lossy: the more you compress the lower quality you get. We can transfer longer tapes to DVD but we do not advise it and the quality of the transfer will suffer the longer the tape.