by Qyot27 » Mon Oct 01, 2007 8:45 am
If it's for DVD, just encode as 25fps and use DGPulldown. Although I don't do that, but it's an option.
There's ADTelecine (I think it can do PAL->NTSC), or the ChangeFPS(29.97) line mentioned above. However, converting from NTSC to PAL by doing a ChangeFPS(25) isn't as clean, as it has to drop frames instead of add them. Thus, to preserve motion - at the expense of blending - using ConvertFPS(25) would probably work better.
Otherwise, IVTC the 29.97 footage, and do AssumeFPS(25,sync_audio=true).SSRC(48000,fast=false) - but be aware it'll make the audio higher or lower-pitched, and if the footage is meant to be in 29.97 instead of 23.976 you're SOL when the IVTC messes up your motion.