PAL anime DVDs & Decomb filter

[Bonzo]

Is there a way to recreate progressive 23.976fps from PAL anime DVDs using Decomb?
That is, interlaced 25fps to progressive 23.976fps. Once i have progressive i plan to resize to 480x480 and encode it at 29.997fps via 3:2 pulldown.

By separating fields you can notice that it probably have been captured from analog source (PAL 50fps field?), because almost every frame is interlaced and there are a lot of blended frame in the separate fields. I think that is a poor NTSC to PAL conversion and very bad DVD mastering...

May be i can't convert to 23.976fps (Decimate(cycle=25) makes it 24fps and i don't know if it works with 3:2 pulldown), but there is a way to get 25fps progresive frames? I have tried Telecine(chroma=true) followed by Decimate() in all 3 modes but i got a lot of interlaced frames...

Bonzo.

PD: I used Telecide() with Friends PAL DVDs and it did an execellent work so i was able to clean a bit those awfully noisy frames...

[DJ Bobo]

Forget it, it won't work (make a small search, you'll see that your question has been asked many times before)
Why do you want to convert to NTSC anyway?!

[vlad59]

@Bonzo

Yes, I got the same pb with a bad City Hunter DVD.
It seems that they (the DVD makers) simply took the 720*480 29.976fps source -> changed the fps to 25fps (using a crappy method ie with interlaced frames) -> resized the result to 720*576 (blurring the fields).

So I got some good (understand viewable) result using this script :
SeparateFields()
Convolution3d(0, 12, 22, 8, 8, 3, 0)
Weave()

But the quality still sucks :(

[Sigmatador]

From NTSC source, framerate is 29.970 fps and has been converted from 23.976 using a telecide method with interlacing --> so to return to the 23.976 nativ framerate just deinterlace and delete the duplicated frames with inversetelecine.

But from PAL source the framerate is 25 fps and obtain using a sort of "resample" (don't know if it is the right english word). So new combinated frames have been added and the original frames are not necessary keeped. After a lot of test(i know the problem, in europe most of DVD are PAL, it's very good for movie, but not for anime...)
i can assure you that it's impossible to return PAL source to 23.976 without causing "lag" (right word? ^^)

try this line: Decimate(mode=1,threshold=50)

deinteralce NTSC source are automatically decimate to 23.976, but deinterlaced PAL source stay in 25fps...

Definitively the right way:
- ANIME NTSC --> 23.976 fps
- ANIME PAL --> 25fps