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mp3dom
5th February 2007, 18:23
Hi to all,
I have a big question and a big problem :(
I have an old japanese animation (NTSC coming directly from Japan!) with some episodes in 23.976fps + 3:2 pulldown (ok) and some with a strange fieldblending. It seems like a previous "PAL to NTSC" conversion (which seems to me strange since the original is japanese!) with 1 field clean and the other blended. Where I can IVTC correctly the episodes with 3:2 pulldown (with TIVTC), with the fieldblended I can't... but I need to convert both to PAL... Is there a good way to do so keeping all episodes uniform? Thanks!

foxyshadis
5th February 2007, 21:13
Your best option in this case is probably to fieldblend back to 25fps after the IVTC, unfortunately. (Hey, that sounds like the master mixup Mug Funky once mentioned.) Unblending NTSC back to PAL and then back to NTSC sounds nightmarinsh, although if it's just to sped-up PAL it might be possible with the unblenders (restore24, Mrestore, restorefps). Or just speed the IVTC'd one up.

Mug Funky
6th February 2007, 00:02
hmm. this sounds oddly familiar. what series is this?

btw, tdeint can be used as a de-facto IVTC if you're desperate. sometimes the blends aren't too bad (i've encountered similar footage before i think).

mp3dom
6th February 2007, 00:04
Thanks for the reply!
The problem is that if I apply the IVTC, TIVTC cannot find "right" patterns (I think) it's something like "cpppccppcpppc" (an example) so when I decimate (Tdecimate in mode=1) I got some frames interlaced and others blended. Unblenders like Restore24 can take a ntsc fieldblend and output a 24p sequence? I previously think that Restore24 works only for PAL fieldblending. Anyway If I can obtain a 23.976/24p sequence unblended then I think to have my problem solved since the last operation is to speedup the audio (the same as the IVTC applied to the episodes with 3:2 pulldown)

MOmonster
6th February 2007, 13:27
Both functions, restore24 and Mrestore can do also the other way, but repal is recommed for non animated sources.

mp3dom
6th February 2007, 13:56
Thanks! Yes, the source is an animated serie. Restore24 (the RC1 version) works quite well but even if I set the output framerate to 23.976, I obtain ~28 fps instead (with SmartDecimate). mRestore seems to works better. There are some residual blending around but it catch the most nicely so I think to stay to mRestore. Also the frame rate is fixed at 23.976 so it's also good for the audio part :)

Didée
7th February 2007, 08:08
Restore24 (the RC1 version) works quite well but even if I set the output framerate to 23.976, I obtain ~28 fps instead (with SmartDecimate).
Probably not R24's fault ... What's the exact syntax you're calling Restore24 with?

Please fill in (strike not-used parameters) : :)

Restore24( numr=___, deno=___, r24fps=___, [other params] )

mp3dom
8th February 2007, 09:10
Yeah, You're right! Bad parameters passed. With numr=24, deno=60 and r24fps of 23.976 i have an output of 23.976 which is what I need. Thanks!!

MOmonster
8th February 2007, 09:25
I think the output framerate should be 25fps. With the wrong framerate Mrestore will fail and of course also restore24 will do a better job with the exact outputframerate. A speed up after the restoring is the better solution in my opinion.