Curious about cause of this ghosting(?)

[kiwiusa]

Hi all,

I received a clip in AVI format (DivX) and was flicking through the frames when I cam across this.

Out of curiosity, can anybody explain what may have caused it?

The history of the clip is somewhat murky, but it apparently came from a Laser Disk.

Here's a few frames:

http://rapidshare.com/files/92497014/BBClip.avi

[edDV]

Hi all,

I received a clip in AVI format (DivX) and was flicking through the frames when I cam across this.

Out of curiosity, can anybody explain what may have caused it?

The history of the clip is somewhat murky, but it apparently came from a Laser Disk.

Some clueless person did a blend deinterlace. Isn't it pretty?

[jagabo]

That is a film source that was telecined for NTSC broadcast then blend deinterlaced.

http://www.100fps.com/

[edDV]

That is a film source that was telecined for NTSC broadcast then blend deinterlaced.

http://www.100fps.com/

Yes, you can't get to three Mic stands without help from telecine.

[kiwiusa]

So if I'm reading this correctly, in order to get some useable source, I would have to:

1) Write, discover or conjur up a wonderfully mythical unblend filter

2) IVTC back to to original

..or..

1) Write to the guy who sent me the file and tell him he's a moron


Correct???

[jagabo]

Yes. There's an AviSynth filter than can unblend this type of video. I don't know how well it works.

[edDV]

Or get the laserdisc and player, then cap interlace and do a proper inverse telecine to 24p. Then do the divx.

[manono]

Yes. There's an AviSynth filter than can unblend this type of video. I don't know how well it works.

It works. It's called FixBlendIVTC and is part of the R-Pack:

http://forum.doom9.org/showthread.php?t=95924

1) Write to the guy who sent me the file and tell him he's a moron

You could still do that. I would. Even a good unblending filter can't produce results as good as if it been done properly the first time.

[jagabo]

Yes. There's an AviSynth filter than can unblend this type of video. I don't know how well it works.

It works. It's called FixBlendIVTC and is part of the R-Pack:

http://forum.doom9.org/showthread.php?t=95924

That uses a function called Average(). Can you tell me where I can find this?

[manono]

Ask and ye shall have:

https://forum.videohelp.com/topic330377-30.html#1710860

[jagabo]

Thanks manono. I tried FixBlendIVTC on one video and it worked very well.

[kiwiusa]

I'm trying out FixBlendIVTC without a great deal of success so far.

After seeming to get all the .dll versions correct when using this:

FixBlendIVTC(post="""pp2.deen("a2d")""")
tdecimate(rate=23.976,mode=7)

I get this:



When I drop down to this:

FixBlendIVTC(post=5)
tdecimate(rate=23.976,mode=7)


I still get my 3 mic stands.

[manono]

Hi-

Deen is a separate filter, and not part of FixBlend IVTC, so you have to have its DLL, and either put it into the AviSynth Plugins directory, or use a LoadPlugin line in the script. You might try:

TDecimate()

rather than tdecimate(rate=23.976,mode=7), to see if the decimation is any better, and you may have to fool around with the other options to try and make it unblend better. But there's a good chance that your source is so lousy and so blurred that it's having trouble picking out what's blended and what's not.

The use of Deen (or some other denoiser) before the unblending might be a good idea, though. You can find Deen here:

http://avisynth.org/warpenterprises/

And there's more info about FixBlendIVTC here:

http://avisynth.org/mediawiki/FixBlendIVTC

That second pic you posted is noticeably better than the first. The blend is much lighter, although still there. FixBlendIVTC did something. Of course, it's not the same frame either.