NTSC to Pal Transcoding

[szf61]

I have an NTSC originated AVI file, which runs at 29.97 fps. I have to transform it to PAL (25 fps) in order to make a PAL video CD. With VirtualDUB, decreasing the frame rate means audio desyncronization, because the video track will be longer.

Question: Is there any program, which makes this job properly ?

Thanks Fatman

[MITSUI_1]

TMPGe, if fed a LOWER frame rate than the "desired" does a pretty good job of adding duplicate frames to get you where you need without messing up the video length. The added duplicate frames cause just a little loss of smoothness, but it's about the best you can do.

I would take the AVI and perform a telecide + decimate combination using avisynth and the Decomb filter. That'll get you back to a smooth 24 FPS, which of course is still too slow. Then, feed that into TMPGenc and encode it to PAL. It _should_ add an extra duplicate frame for every 24th and keep the audio in reasonable sync. You can use Full Screen (keep aspect ratio) to stretch or shrink the video to PAL VCD resolution.

I've not done a heck of a lot with PAL, but I have converted a lot of 24 FPS feeds back up to 29.97 for VCDs (since my DVD player chokes on VCDs that are encoded at 24 fps).

Anyway, I think this will work, but let me know if it doesn't.

PS: If you wanted to get FUNKY, you could use TMPGenc to do a save as AVI (at 25 fps) and then feed that AVI (that will have duplicate frames ever 24 frames) into another avisynth script using Decimate but telling it to decimate 1 frame every 25 frames and to use MODE=1, which will remove one of the duplicate frames and replace it with an interpolation of itself and the next non-dupe frame. That will make for a smoother video, but hell if I know if or how to make it actually work!.