Frame Rate Conversion - How to reduce uneven pan jerkiness?

[SCDVD]

I have been experimenting with various methods of converting NTSC to PAL. I have had good success but with each method that I have used, I always get noticable flicker when there are scenes that involve camera pans. I realize that the conversion to the 25 frames per second, which PAL uses, results in some of the NTSC frames being discarded. Are there any conversion programs that reduce this?

[jagabo]

If your source is 23.976 fps just speed up the frame rate to 25 fps -- no frames lost or duplicated. Then speed up the audio by the same amount. That's how it's normally done.

[guns1inger]

The DGPulldown method doesn't discard any frames or physically change the frame structure of the video, it just changes the way it is played back. As no frames are added or subtracted or duplicated needlessly, it should not suffer from this problem.

Thankfully i live in PAL land and format conversion is not an issue for me, but those who use this method here rave about it.

[FulciLives]

23.976fps NTSC is easy enough to convert to PAL but it is 29.970fps NTSC that can be a bitch to convert to PAL.

Thankfully I live in NTSC land ... I say that as converting PAL to NTSC is as easy as converting 23.976fps NTSC to PAL without the issues one has with 29.970fps NTSC to PAL.

For 29.970fps NTSC to PAL I would check out Xesdeeni's scripts.

Here is a link ---> CLICK HERE

You want to read section VII. NTSC (Video) DVD (29.97i Fps) -> PAL DVD (25i Fps)

Please note he wrote this some time ago and tools have been updated and changed a bit since. For instance there is now an AviSynth 2.5x version of the SmoothDeinterlacer function.

I also just realized that he updated this (link is on top of the page I linked to above).

I'm looking at the new version and he has it split into final format. For a 29.970fps NTSC source you want the section called, "To 25i" and under that you want the section called, "From 29.97i" because any NTSC DVD with a 29.970fps will be interlaced.

Please note that some 29.970fps NTSC sources can be IVTC'ed so that you end up with progressive 23.976fps NTSC which can then be converted easily to PAL ... but IVTC is not possible with all 29.970fps NTSC sources.

He also has a new section for a 29.970fps NTSC source that is progressive. That sometimes happens with downloaded DivX/XviD sources.

- John "FulciLives" Coleman

[mikiem]

If you've got telecined film, as everyone's said I think, best to get back to film if possible. If it's true NTSC 29.97 from render or camera, think most of the NLEs (prem, vegas etc.) can render new frames based on averaging out the existing ones.

There's also software including encoders that can do the job for you, but I've no idea how well they might work. Might want to check for a similar thread a short while back