Quite simply, the higher the capture rate, the higher the Quality (for the same codec). However, before opting for the latest format with the highest bit rate, it is best to understand the quality of the original media. For example if the original tape is of VHS quality then a VCD is capable of reproducing the original video, i.e. capturing the video in MPEG1 at 2 Mbps will suffice. However for a better source, such as Hi8 and S-VHS, or for fast moving action, a higher bit rate would be more appropriate. Therefore to ensure better quality to cover a variety of devices and purposes, we include our default capture rate @4Mbps.