Deinterlacing (?deblending?) "Xich Lo"

[Morte66]

I'm trying to pre-process a DVD of Anh Hung Tran's film "Xich Lo" (aka "Cyclo") and I'm stuck at the deinterlacing stage. Here's a sample...

http://rapidshare.com/files/17904311/Cyclo.Clip.m2v.html

MeGUI declares it "Hybrid film/interlaced, mostly interlaced" if I test the whole film, or "Interlaced" if I test 80% from the middle. I presume there's something odd in the credits, which I won't worry about. In any case, neither of the deinterlacers MeGUI recommends really work -- there's loads of combing, weird stuff at cuts etc.

So I tried just using TDeint(), and that got rid of all the combs but it left me with ghosting in many of the frames.

Then I tried SeparateFields(), and when I look at the fields I see ghosting in the fields themselves. I figure that means there must have been some sort of blending going on. The ghosting is not even, there's some sort of cadence to it, so I figure the video may have flirted with a telecine process at some stage. At least I think so, my grasp of this stuff is not what it might be...

Anyhow, so far as I can see there's no way I'm going to fix the ghosting in a regular deinterlacer. If there's blending in the fields themselves then however you combine them there'll still be blending, right?

So I guess what I'm asking is
(a) is my analysis so far completely wrong, slightly wrong, or lucky?
(b) are there any fiendishly clever scripts out there that can make this look (more) like progressive film?

[Mug Funky]

downloading now.

btw, please try to avoid rapidshare... it really isn't a good place to put files.

there's a sticky in general discussion (i think) about file hosting places.

[Didée]

It's nothing special, just good old fieldblending from NTSC<-->PAL norm conversion(s).

Generally, that's a job for Restore24 or Mrestore.
Problem is that here, the used converter box produced a nasty kind of pattern: there are double-blends appearing in each cycle (c-b-c-b-b-c-b-...). At least R24 can't fully deal with those, since it expects a "clean" pattern with onle single blends occuring. Therefore it can't remove all of the blends.
Didn't yet try if Mrestore deals better with this source.

[scharfis_brain]

@Mug, why is rapidshare bad?

[Mug Funky]

i had a look at this last night. looks like it was originally PAL (25p).

i had a bit of success with my homebrewed PAL-from-NTSC restore script, though i'd have to do an encode and play it back to be sure it's not causing dupes and nasty motion artefacts (it's not well developed - it was made to do 1 job and never touched again :)). i'll post the script when i get home, but i think it may be floating around here somewhere in one of the many similar standards-conversion-reversal threads...

@ scharfi:

20 min wait between downloads, and around 2 mins per individual download (not counting the actual file transfer, which gets slower all the time).

plus often those non-machine readable passwords aren't human readable either, you get it wrong and have to wait another 2 minutes to enter it again.

[Blue_MiSfit]

indeed. Rapidshare works, but a lot of ISPs block it. There are lots (http://en.wikipedia.org/wiki/Comparison_of_one-click_hosters)of better choices.

[MOmonster]

Problem is that here, the used converter box produced a nasty kind of pattern: there are double-blends appearing in each cycle (c-b-c-b-b-c-b-...). At least R24 can't fully deal with those, since it expects a "clean" pattern with onle single blends occuring. Therefore it can't remove all of the blends.
Didn't yet try if Mrestore deals better with this source.
Mrestore won´t do it much better. It use the pattern information a lot and mostly catch also these cases, but there is no direct detection for such doubleblending to avoid the blendoutput here (next version will have).

[Morte66]

It doesn't look good for the deblend, then...

It's nothing special, just good old fieldblending from NTSC<-->PAL
Now if it's blended from PAL, that would suggest that there's a PAL version out there, but it sure hasn't surfaced here in Britain...

*digs*

Ah, there's a recent French PAL version. If I'd known that existed I'd have bought it in the first place instead of the NTSC import. I think I'll see if I can dig up a review of the PAL disc which mentions picture quality, and buy it if it's OK.

Thanks for your help, guys. I'm really sorry it turned out to be for nothing.

[juhu]

there's a recent French PAL version. If I'd known that existed I'd have bought it in the first place instead of the NTSC import. I think I'll see if I can dig up a review of the PAL disc which mentions picture quality, and buy it if it's OK.


I don't have the dvd in hands neither can't point out reviews, but I can assure as a frenchie who saw the Arte dvd Cyclo looks absolutely terrific :cool:

@ Momonster, btw I take this occasion to thank you for mrestore, just discovered it yesterday, and all my problems with Pal transcoded dvds (french portages of RKO / Milestone dvds) just suddenly vanished while I was never able to correctly use restore24 on it :thanks: