Extremely dirty DVD source, what to do...

[zeronegative]

I am trying to make a DivX rip of this anime-DVD; I have used DVD2AVI without FF to create a d2v project. I now want to apply some filtering to get rid of the interlacing, but I don't really know what method would work best on this DVD. Could somebody advise me? Here are 6 consecutive screenshots of the source material...

http://www.zeronegative.net/sample/001.jpg
http://www.zeronegative.net/sample/002.jpg
http://www.zeronegative.net/sample/003.jpg
http://www.zeronegative.net/sample/004.jpg
http://www.zeronegative.net/sample/005.jpg
http://www.zeronegative.net/sample/006.jpg

[sh0dan]

We really need a VOB fraction, as we cannot test on these frames - they seem resized. You can download a VOB splitter from d9's Download section.

[WyldeF1r3]

well, despite the ivtc, i still see some interlacing lines in some of those frames. What method did you use to ivtc? Looks like a real old source (early 90's dvd release). Just by the pictures i'd reccommend some aditional deinterlacing, convolution3d (yuy2 version, yv12 is crap imo) on something like animelq or so. Interlacing looks like the main problem to me in those frames.

but as sh0dan said, some vobs to work with would be nice.

[zeronegative]

sh0dan, WyldeF1r3...

First off - thanks for your swift replies. A sample can be found on http://www.zeronegative.net/sample/test.vob, I made it 6 seconds long (3mb), hope that's enough.

For WyldeF1r3: the screenshots were made before any processing, so there hasn't been any IVTC performed (didn't check FF in DVD2AVI).

[sh0dan]

Very difficult sample (because of the darkness).

It has loads of blended fields. I took a drastic step, and halfed the fps to 12, which kills most of the blended frames.

This is my best shot:

MPEG2Source("D:\video\avisynth_tests\anime.d2v")
crop(10,0,-10,0)
telecide(threshold=5)
dup(show=false,copy=true,blend=true,threshold=1) #blend true duplicates
decimate(5)
decimate(2)
mipsmooth(12,4,8,6,5,method="soft",downsizer="bilinear",upsizer="bicubic")
msharpen(mask=false,threshold=12)
bicubicresize(640,360)


I tried my own mipsmooth (you can find it here (http://forum.doom9.org/showthread.php?s=&threadid=53548)). IMHO it provides much better smoothing than a C3D animeLQ.

[zeronegative]

Thanks. I tried it, but the result is pretty stuttery. I'm wondering if that's caused by the decimate(5), perhaps the original source was true NTSC (29.976) and not 23.976? I'm not sure if that's 'standard' with anime.

[sh0dan]

It's caused by the decimate(2) - remove it, if your source doesn't allow it. It worked on the sample, but there might be some parts where the motion is 24fps (or even 30fps, in which case you also need to remove the first decimate). This will bring many of the blended frames back - nothing to do about that unfortunately.

[zeronegative]

Yeh. I did a longer test without decimate(5) and it looks a lot better. Now if I want to bring the FPS back to 30, do I use ConvertFPS or ChangeFPS? I guess the latter would be OK (duplicate each frame), but what exactly is the difference with ConvertFPS?

[sh0dan]

If the movie works with 24fps - keep it that way - if it is still jerky, remove all decimates.