Interlaced frames - Just crap frames on the DVD?

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Garylisk
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Interlaced frames - Just crap frames on the DVD?

Post by Garylisk » Fri Aug 22, 2008 9:10 pm

I have another puzzle for the avisynth pros round these parts, and this time I am pretty sure I already know it's unavoidable.

Check out the following frames:

Image
Image
Image
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Image

I cut some frames out so you can see what's going on, but pretty much, there's some frames that are like two interlaced frames that were paired wrong or something, as well as one frame that just looks god-awful, probably due to a bad transition or something, I don't know.

I theorize it's just that the stupid Tenchi OVA DVDs are awful, but just in case...

Script in use currently, some unimportant bits cut out:

Code: Select all

mpeg2source("E:\TENCHIOVA\ep1.d2v",cpu=4)
AssumeTFF()
ConvertToYV12()
TFM(order=1,mode=5,field=1)
TDecimate()
AssumeFPS(23.976)
LanczosResize(640,480)
deen("a3d",3,3,3)
FastLineDarken()
msharpen(threshold=10,strength=65,mask=false)
Trim(1,41440)
Tweak(cont=1.2,sat=1.1,bright=1.1, hue=0)
Keep in mind, the Tenchi DVDs are not like your typical DVDs, so I am not sure anyone can even begin to help unless they are familiar with these discs. They're horrible, just ask any Tenchi fan.

I am using TFM because Decomb was not doing the trick. TMF is doing wonderfully, but I have these frames I don't know what to do with.
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Kariudo
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Post by Kariudo » Fri Aug 22, 2008 9:45 pm

try messing around with cthresh (parameter for TFM)
it's an int value (default 9) lower means that TFM should catch more combed frames.

Lowering MI is another option (int, default 80)

another thing you can try is put
deint=TDeint()
TFM(stuff, clip2=deint)

into your script in the hopes that tdeint does a better job of restoring the original frame
Image
Image

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Scintilla
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Post by Scintilla » Fri Aug 22, 2008 10:06 pm

First thing I'd try would be to replace the TFM line with this:

<b>TFM(d2v="E:\TENCHIOVA\ep1.d2v")</b>

That should take care of illegal field order transitions, if there are any. These shots look kinda similar to the kind of thing I've had to deal with in the Love Hina specials.
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Garylisk
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Post by Garylisk » Sat Aug 23, 2008 10:24 pm

Scintilla wrote:First thing I'd try would be to replace the TFM line with this:

<b>TFM(d2v="E:\TENCHIOVA\ep1.d2v")</b>

That should take care of illegal field order transitions, if there are any. These shots look kinda similar to the kind of thing I've had to deal with in the Love Hina specials.
That was actually the first way I tried it. :(

The way it is now is from my tweaking it around to see if I could make any difference...
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Qyot27
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Post by Qyot27 » Mon Aug 25, 2008 1:19 pm

If you're masochistic enough you could try YATTA:
http://ivtc.org/

It does apparently support TFM now. I wouldn't know the specifics though, as I've never resorted to using it - TFM and TDeint do a good enough job for me that any few junk frames that crop up I just ditch.

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