Some reviews have bitrate information such as below Av. Bitrate: 6.19 Mb/s Max. Bitrate: ~ 9 Mb/s Min. Bitrate: ~ 4.5 Mb/s. how do they get this information, i know you can display bitrate on the OSD of most DVD players, but does it (the DVD Player) actually tell you the min, max and average or do you need to do something else? And does the level of bitrate have a direct relation to the quality of the picture?