halo-ing with source DVDs

[xxxyzzzz]

Hi again,

I have found another problem with Avatar: The Last Airbender DVDs. Season 1 seems to be mastered somewhat poorer than the others. There are only 4 episodes per DVD as opposed to 5 in the other seasons, but the content has a lot of ghosting.

Here is an unprocessed clip:

http://www.wikiupload.com/download_page.php?id=26485

I am not sure what causes the ghosting (I would like to know). Is this fixable? And, if so, how?

Thanks in advanced, you have always been helpful.

Z

P.S. The clip is a little big, sorry.

[Dark Shikari]

Though your link doesn't work (the site gives me no download link), the issue is most likely frameblending. You will likely have to use a filter like MRestore.

[neuron2]

The download link is on the righthand panel.

[neuron2]

I don't see any field blending. It looks like just hard telecine. Try this:

telecide(post=0)
decimate()

[xxxyzzzz]

@neuron2 - I think you are correct, the entire series is hard telecined and I have seen no field blending anywhere.

With frame matching and with/without post processing or decimating, the end result still looks ghosted. Currently, what I use on the source is in my last post in my last thread (because this solves other problems):

http://forum.doom9.org/showthread.php?p=1070977#post1070977

Only in season 1, however, does this problem occur this badly. Perhaps it was encoded improperly?

[neuron2]

Looking at your sample posted above, there is NO ghosting when processing with the script I gave you. So you're not making any sense. If there is a different clip you are talking about, then give us that. If it is in fact caused by some elaborate script you are running then post that.

You have not yet demonstrated any ghosting to us!

[xxxyzzzz]

I'm sorry for making it difficult.

I just used your exact script and took this screen shot of the result:
http://www.uploading.com/files/H2D0R7HK/image.png.html

There are bright edges that follow around all the dark edges. Maybe this is not ghosting, but a different problem that I mislabeled. If so, could you tell me what it is?

[neuron2]

It's edge enhancement, or oversharpening.

[xxxyzzzz]

Oh ok, that make sense. Once again, sorry for thinking it was ghosting.

Would you have a recommendation for which filter to use?

Thanks,
Z

[Chainmax]

Dehalo_Alpha.

[xxxyzzzz]

This works wonders.

Thank you for your time and patience.

Z

[xxxyzzzz]

The Dehalo_alpha and HQDering filters are really good. The following script gave me pretty good results:

tfm()
tdecimate()
HQDering(strength=255,overall=100)
dehalo_alpha(brightstr=1.3,darkstr=1.3,rx=2.3,ry=2.3,lowsens=50,highsens=20)

Here are two images; the before and after:
http://img456.imageshack.us/img456/3529/origfr9.th.png (http://img456.imageshack.us/my.php?image=origfr9.png)
http://img87.imageshack.us/img87/8288/warmerxm7.th.png (http://img87.imageshack.us/my.php?image=warmerxm7.png)

There is one thing I noticed with doing this and that is that the video came out a little "warmer". I can understand why this is with the algorythms used. My question is this - is there a way to reduce this effect and keep the color/bightness/temperature closer to the original?

The unprocessed source clip from which I took the snapshots above is here:
http://www.wikiupload.com/download_page.php?id=27016

Thanks again,
Z

P.S. I changed the thread name to reflect more acurately the original problem. I hope this was ok. :]

[Razorholt]

Tweak() (http://avisynth.org/oldwiki/index.php?page=Tweak)

[kumi]

You probably have a colorimetry coefficient mis-match. Use ColorMatrix().

[xxxyzzzz]

@kumi - I have used colormatrix and upon encode I get patches of even warmer colors throughout the video, which confused me.

I will see what I can do with tweak() next. More suggestions are always gratefully accepted. :]

Z

[xxxyzzzz]

Well,

I have have tried and tried and tried with Tweak(). I am not a photoshop artist though, and my many fails may be due to this.

I have tried several options, but would there be a way to lessen this effect with HQDering or Dehalo_alpha?

Thanks,
Z