I have a bunch of AVIs that were encoded at 25 fps and I want to convert them to DVDs for playback on N.American DVD players for maximum compatbility. What would yield better results... converting to NTSC or NTSC Film? Are there any other encoding options I should use?

ffmpegx documentation says "don't try to convert PAL into NTSC or the opposite", but there's got to be a way.

Thanks.