As Ssseth said, and asu probably know, the more video u fit onto a disc, the lower the quality will be. I haven't used Sonic or TMPGenc, but I have tried out Nero vision express to convert some divx. If u have vision express, then after u add the video, at the bottom u'll see the button 'configuration'. I think its in there that u can decide on the video system (Pal/NTSC), as well as EP, LP, SP (bit rates) etc. If u don't really want to use NVE, then I guess u can look at the names (LP) and the associated bitrates, and then use those bitrates in other programs to give u the desired results.