Deinterlacing PAL = flickering edges?

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Deinterlacing PAL = flickering edges?

Postby Spirit Wolf » Thu Mar 01, 2007 1:38 am

Hello there.

I'm attempting to deinterlace some PAL dvds (Zoids). I've been following the excellent Tech guide, but after running my footage through a deinterlace, I get some ugly "flickering" edges.

Certain black lines seem to "shimmer" through each frame which looks pretty terrible during playback. It doesn't always occur - it's only during certain shots.

Here's an example:

<A HREF="http://img.photobucket.com/albums/v224/spiritwolf_au/test.gif">4 frame animated GIF</A>

Any idea what this is caused by? I'm new to this and trying my best to get the hang of it.

I've tried each of the four recommended deinterlacers in turn and wind up with the same result each time.

Here's my current script (very simple):


MPEG2Source("C:\Zoids AMV\ZOIDSCC_DVD01\zoidscc_dvd01.d2v",cpu=4)
TDeint(mtnmode=3,type=3)


I apologise if this is a noobish question.
Spirit Wolf
 
Joined: 11 Feb 2004

Postby Athena » Thu Mar 01, 2007 1:55 am

I can barely see that. Can you post the four individual frames, slow down the change rate, or post a longer segment?
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Postby Spirit Wolf » Thu Mar 01, 2007 7:15 am

Apologies. Here are two frames from a shot in which it's more noticeable:

<A HREF="http://img.photobucket.com/albums/v224/spiritwolf_au/test1.png">http://img.photobucket.com/albums/v224/spiritwolf_au/test1.png</A>

<A HREF="http://img.photobucket.com/albums/v224/spiritwolf_au/test2.png">http://img.photobucket.com/albums/v224/spiritwolf_au/test2.png</A>


Alternate between the two pics and you should see the changes on the dark lines (especially on Irvine's headband). Is this what normally happens with deinterlacing?

The lines seem to change slightly every frame, which looks absolutely dreadful when played back.

On a closer look, it might be a jagged lines problem. I tried deinterlacing it with LeakKernelDeint and changing the threshold but it didn't clear the problem up. I also tried TISophote, but it didn't seem to improve it.
Spirit Wolf
 
Joined: 11 Feb 2004

Postby Athena » Thu Mar 01, 2007 10:58 am

You tried telecine and decimate?
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Postby Spirit Wolf » Thu Mar 01, 2007 4:47 pm

Inverse telecine ended up looking much nicer and cleaner. Thank you!
Spirit Wolf
 
Joined: 11 Feb 2004

Postby Athena » Thu Mar 01, 2007 10:17 pm

Happy to help. What I'm here for.
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I ♥ the 80's
 
Joined: 02 Mar 2001
Location: Japan
Status: Sad Girl on Mac


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