Anime and IVTC

[midiguy]

OK, I have tried just about everything! tmpgenc, greddyhma, decomb, and the default g-knot ivtc, point is: non work! I tried so amny cariations of all the settings, nothing. what is the reccomendation? should I just de-interlace?

[Pater Noster]

It depends whether the source DVD is PAL or NTSC.

IVTC doesn't work on PAL DVD's, but it can do miracles with NTSC.
I always do a manual IVTC when ripping DBZ DVD's and I never had any problem with it (although the parts which are censored are really ****** up, no IVTC pattern can be used there).

[TraXeN]

Go to the post: "How to perform an effective IVTC" under the nandub thread.

That is a suggestions that definetly works and gives away great quality.

[poopity poop]

people...DECOMB!! GEBUS!!

Decomb works! Its better/Faster/and no pre-processing like tmpeg.
Just because you have to write a script, and that word scares you because you think its so hard...
Just install avisynth, and type freaking 5 lines into notpad, save the friggin thing and rename it. BAMN, YOU HAVE AN IVTCed avs file that acts like an avi.

Look, I even know what I'm talking about....here is my OWN website:

Good method.....
http://web.syr.edu/~tjmyers/avisynth.html

Bad method.....
http://web.syr.edu/~tjmyers/tmpeg.html

I know both...look...I really really do, I made those pages :), decomb is better, plain and simple.

Of course all that I have said is a load of crap is you are using PAL DVD's, sorry, this applies only to NTSC(29.97fps)

[manono]

Hi-

Good job with the redesigned site poopity poop. It's coming along nicely.

One thing about the Decomb settings. Although the basic settings you gave may work well for easy stuff, the default Threshold may sometimes be too strong for anime, or you may need the Chroma setting or the Guide=1 (from Decomb 3.8) settings to properly IVTC-Deinterlace the harder stuff. I'm using this these days:

Telecide(Guide=1,Gthresh=75,Threshold=30,Chroma=true)
Decimate(5)

and tweaking from there. Those moving mouths are a bitch to get deinterlaced sometimes, and I find the Gthresh=75 (or a bit lower) can usually take care of them. And I think I'd be careful about recommending Post=false. Even Decomb, as good as it is, sometimes lets some interlaced frames sneak by. I like to have the deinterlacer in there just for insurance.

[OUTPinged_]

poop, you seem to get a bit far with thresholds again :/

i tried it myself and it looks like one would hardly ever need a gthresh over 50.

even 90%+ pure film dvds are left with interlaced frames w/o post.

we arent making hollywood rips you know


mamono, i really need some of your experience on "mouth problem". could you be more specific at working threshs and source material?


@others:

you guys dont need anything except decomb nowadays. i have run into only one dvd where tmpeg output looked smoother, but noobs cant get tmpeg output to be good enough anyway :/

[midiguy]

ok, I have tried every fucking setting in every IVTC filter for Street Fighter Alpha the movie DVD RIP.. if ANYONE has that DVD or wants to get that DVD, I would like you to try to IVTC that bitch.. please note, it is the one with english/japanese audio option and english/chinese subs options... and the back of the DVD case is all japanese writing.. (I say this because I beleive there are 2 releases, or maybe I am wrong).. I am telling you, everything leaves some interlaced frames!!

[manono]

OUTPinged_

Well, I was fooling around with some Cowboy Bebop the other day, and while checking it out before encoding, I noticed some interlaced mouths(without Guide=1 and Gthresh). Adjusting Threshold=30 down didn't fix it. So, as an experiment, I tried Guide=1 at default, but no go. I started upping the Gthresh, and at 40 the stuff cleared up. So I think "Fine, that's the magic number-I'll use that from now on".

Then a couple of days later, I was messing with Bubblegum Crisis Tokyo 2040, but noticed interlaced mouths (side view-small mouth) with Gthresh=40, but it cleared up at 50.

Then a couple of days later I was working with Macross Plus and again found an interlaced mouth with Gthresh=50 (the guy was in the shadows, so maybe it was a special case). So I think to myself, "Enough of this dicking around", and put it up to 75 (didn't check anything in between), and that did the trick.

So those are my default settings now, although I did say above that I can work my way down from Gthresh=75. I checked with DGraft to see if there might be some unwanted side effects from that high of a setting, and he said it would be fine.

If you were talking about the Threshold (and not Gthresh), then I sometimes find that the default 15 is too strong and will create jaggies in good frames, so I use Threshold=30 unless I find a good reason not to.

midiguy-I've never worked with your movie and never will. But if that's a Hong Kong DVD, then I'd say all bets are off-those things are frequently horribly mastered. And it may be video sourced (created at 29.97fps), in which case about all you can do is Deinterlace.

[poopity poop]

Yeah I tend to be strong on the settings, Warpsharp, and smart smoother, but you guys give me the smack in the face, and I realize my error :). Thanks for those settings manono. Would you mind if I add that info to my site? I havn't tested them myself, like everything else I put on there, but I'm sure they work.

[manono]

Hi p p-

Those were settings that worked for me for just three out of how many anime DVDs that are out there. And I think OUTPinged is right in saying that Gthresh=50 is about as high as you usually have to go.

But you're welcome to use what you want and tell your readers-fans to experiment because each anime is different (you always do that anyway). You say it's Anime Ripping for Dummies, but you can't really leave your brain on the shelf when working with anime.;)

Keep up the good work-keep spreading the word.

[Guest]

Great advice from all you folks. I'm learning a lot!

@midiguy

Please do yourself a favor: skip the profanity and follow the forum rules. People will like you better. :)

[Pater Noster]

@poopity poop: TMPG for me is not just IVTC-ing, I use it too for getting out the glitches (scene glitches and other artifacts that have been left behind on the DVD).
I rip a lot of anime (DBZ) and those DVD's aren't perfect. They need a lot of cleaning up to do and I go through all the frames to correct the frames when needed.

TMPGenc is the program for me to do that :).

[Inindo]

I have a problem of a slightly diffrent sort. I tried using decomb as suggested, but a lot of what appeared to be blended frames still came through. Undaunted, I fired up TMPEG to try to a manual IVTC myself (this would be my first attempt)

What I found, was what appeared to be interlace-looking lines on almost every single freaking frame! In all the previous Anime I've ripped, there would be interlaced-looking ones, and there would be normal ones, but this one was almost all of the former. I would have to search to find a frame that did NOT look interlaced.

What should I do now? Is there a solution, or should I just use De-interlace?

[manono]

Hi Inindo-

Yep-sounds as if it hasn't been telecined, so you can't IVTC. About all you can do is FieldDeinterlace().

In the off chance there are telecined sections (but based on what you said, there aren't), then Telecide()-Decimate(Mode=1,Threshold=50) works to keep everything nice and smooth, but at 30fps also. There's more information on it in the Help file.

[poopity poop]

Seeing as how some very good encoders are viewing this thread I thought it appropriate to ask this here:

DivX 5 seems to surpass even nandub. Nandub has tons of settings, but even still I beleive that we can get better results from DivX 5. Anyone try it yet? Any suggestiong/settings that you would recommend?

[Hanty]

I've played alot with it back and forth, had a comperative DivX5 clip alongside a XviD and SBC one in the XviD folder some weeks ago (I took down the links, files had been downloaded 150+ times). DivX5 made some real good looking shots at about 3/4 of the size of the SBC clip.

Problem though is that when I re-encoded the entire Movie form which the clip was taken (Kiki's delivery service) the reslut was somewhat disappointing compared to SBC. The DivX5 encode was very uneven.it looked great at times and not so great at times, so I went back to the drawing board. The things that I couldn't really fix no matter how many times I redid it was dark scence with alot of black parts. it got really grainy, not something I'd put my name in.

All in all I'd say the results with DivX5 for now are slightly too inconsistent.

[Inindo]

There's one thing about my Cowboy Bebop DVDs that I would like to ask about.

When I run DVD2AVI on it, it generally turns out to be around 77% FILM and 23% NTSC. However, it changes constantly between FILM and NTSC throughout the entire thing. I think it's because only the duplicated frame is being stored as NTSC. In that case, will I need to use any special settings for decomb?

[OUTPinged_]

no. there arent much pure30fps sequences in bebop episodes (excluding OP/ED).

just use default settings.

if not satisfied then toy with them and try to get better results.