NTSC->PAL VCD creation (without juddery frames)?

[Rick123]

I've got many NTSC video sources (VHS, LD and VCD) which I am keen to convert to PAL VCD ... but every attempt at doing so ends up making the eventual PAL VCD version result in major judder between every few frames.

Now I know quite a lot about how TV systems work, especially when it comes to NTSC->PAL conversion ... which is mainly repeating the alternate 1st,3rd,5th etc scan lines of the last frame into the next frame so that there is only a slight blurring effect, which is a lot more pleasing to the eye than the straight frame-for-frame (and repeat) effect that results from doing a TMPGEnc 30fps to 25fps conversion.

Anyway, TMPGEnc does offer a progressive or interlace option, which I've found makes absolutely no difference in the way that the frames judder every so often (which is very hard to watch on either a monitor or TV).

Does anyone have ANY idea on how to convert from NTSC->PAL, just like those DVD producers do for so many of our R2/R4 PAL DVD products (this relates mainly to the documentaries which are sourced in NTSC and are interlace-converted to PAL).

If noone understands what I'm talking about, well then I'm stuffed. Otherwise, I REALLY need some help here. Many thanks. WG.

btw, I've seen the article that is in this website about doing a frame-for-frame speedup from the original NTSC source to a PAL viewing and then doing a time-stretch of the NTSC audio to match the new speed of the PAL video. However, at this time, I want to avoid doing this.

[Betamax]

There is a way, but it only works in VDub.

When you're capturing, override the source-framerate (which possible will be NTSC) to be PAL (or if the source is PAL and you wanna have NTSC, you do it otherways of course). Then VDub records it correctly, by removing frames or adding (wheter what was requested) - eventually you won't see the difference in the result..!

When you've got the final MPeG already (e.g., after a rip from a (S)VCD), you must open the mpg in VDub, enable the full-video-processing and change the destination frame-rate to whatever you want to have.
Then save the movie to a new destination (don't forget to process the audio with the movie to the same destination, or it will be out of sync), the destination will be a new avi.

Then you must re-encode this avi, using whatever encoder you prefer, to create a new mpg..., et voila !

cu.