Deinterlace troubles with Donald Graft’s decomb plugin for Avisynth

[Sim_City_King]

I am trying to deinterlace a NTSC DVD with Donald Graft’s decomb plugin for Avisynth.

Scene changes that occur directly after an interlaced frame results in the interlaced frame coming out at a lower quality than the other frames. I understand that this is unpreventable because it only has half of the desired progressive frame to output.

I read that the Decimate function deletes frames that are duplicates, or one of the two most similar. That means that the low quality frame never gets filtered out. Is there any way to prioritize the removal of these frames? I would rather not have to do this by hand.

Is there another plugin that could get the job done better?
I can supply samples if needed.

Thanks in advance

[Guest]

Supply an unprocessed VOB sample that shows such a scene change.

[Sim_City_King]

Do you want the actual .99 GB file?

How would you recommend that I upload the file?

[Guest]

Cut it to a manageable size.

[Sim_City_King]

The transition at frame 271 ,217 after the filters are applied, is an example of this. I made the d2v file with the "honor pulldown flags" option enabled. The trouble goes away in this clip if you ignore them, but it didn't go away in the full lengh clip.

I tried several free uploading sights
http://www.megaupload.com/?d=D0PBOCS6
http://files-upload.comhttp://files-upload.com/files/539536/E1.zip

The password is "ADFSA4864"

Thanks

[Guest]

The password is incorrect. Why did you protect it?

[Sim_City_King]

This one should work, sorry about that.

This one has no password

http://www.megaupload.com/?d=UIX78HXU

Thanks again

[Guest]

OK, I have it now. Can you please specify what are the frame numbers that are concerned about in the sample? I want to be sure that we are looking at the same thing.

[Guest]

Try this:

Telecide(back=1)
Decimate()

The back option is specifically designed to address this situation. Please see the users manual for more details.

EDIT: Sorry, I accidentally deleted your last post when trying to delete one of mine. You had written:

The transition at frame 271, 217 after the filters are applied, is an example of this. I made the d2v file with the "honor pulldown flags" option enabled. The trouble goes away in this clip if you ignore them, but it didn't go away in the full lengh clip.

[Sim_City_King]

All of the major issues are gone. The only thing that is left is tiny movements, like a scene where only a mouth is moving.

In the sample I just uploaded (http://www.megaupload.com/?d=HV9WOGDI), the movemetn in frame 27 of the origional vob gets through.

I realize that it isn't alot of motion, but is there any way to filter it?

[Guest]

Telecide(back=1,guide=1)

You could benefit from carefully reading the users manual.

[Sim_City_King]

When I add the guide=1, it fixes some frames, but messes up others.

I uploaded another sample <http://www.megaupload.com/?d=T01F3XXQ> (sorry about all of these files) that was particularly incompatible.

I tried messing with some of the threshold values, but got no luck.

I thought that the most noticeable frame was 240 from the original VOB.

[Guest]

You're going to have trouble obtaining perfection from a heuristic algorithm. Consider using manual overrides for fixing up the last few bad frames. Or ask yourself, are they really perceptible when watching the result at normal speeds and sizes?