I'm looking for a good guide to using dvd2avi. One that give better explanation for NTSC, FILM and when to use options like inverse telecine later in the process. From what I've read if your source is FILM, set dvd2avi to force film and you're ok there. If your source is NTSC or FILM at less than 90% then the video option should be none, but then you must run it through inverse telecine later. Why? I know IVTC will take it from 29fps back to 23fps. Why is this needed? If the source is NTSC and 29fps and I just leave it at 29fps when I encode it to xvid or divx, then IVTC is not needed. Right? What is the point to reduce it from 29fps to 23fps? If the source is 29fps on the DVD why reduce it to 23fps in an encoding? What is the advantage? It seems like you are asking for audio/video sync problems by doing this. I seem to be missing the advantage here. I've tried some NTSC video. Encoded it at the 29fps like it is on the DVD and I've done the exact same video and run it through inverse telecine to reduce it to 23fps. I don't see the difference during playback between the two files. One is 29fps and the other is 23fps and they both look good and play good. That's what I would like explained better. Is this needed for some reason I don't see? Or is this just personal preference? Why not just force film on an NTSC video and reduce it to 23fps that way? Or is the IVTC process better at the frame reduction? Any help with these questions, or a guide with a lot of good explanations would be great. Thanks.