Quantcast KVCD: More Artifacts with Filters?! - digitalFAQ.com Forums [Archives]
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02-22-2004, 12:01 AM
audioslave audioslave is offline
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I've been experimenting a few days with the DVD "Underworld" (Cool movie BTW!) and I've found that the best way to get as few artefacts (gibbs) as possible is to make a "clean" encode. That is, with out any filters ! The only thing I added to the resizing script was BlindPP(CPU=6) and that gave me the best quality I could possibly get (to my knowledge). Wierd, eh? The script I used is this:
Quote:
Mpeg2Source("D:\DVD Rip\Underworld\Underworld.d2v")
BlindPP(CPU=6)
LanczosResize(448, 272, 20, 54, 680, 367)
AddBorders(16, 104, 16, 104)
Simple as can be... Of course, one major downer to using a script like this I that the compression doesn't get quite as good as you would wish .
Just wanted to inform you guys. Maybe someone else has experienced the same thing?
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02-22-2004, 03:06 AM
Dialhot Dialhot is offline
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Just a note : don't use blindPP with mpeg2source. Use internal PP of the mpeg2 decoder with :

"Mpeg2source("xxx.d2v",cpu=6).

Note2 : cpu=6 blur A LOT the video ! You think you aren't using any filters ? cpu=6 is equivalent to make a blur(0.2) + a spatial filter aimed on the DCT block borders.

If your script with filters used cpu=4 for instance, for sure they can have much more artefacts.
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02-22-2004, 07:13 PM
audioslave audioslave is offline
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Okay! Didn't know that Dialhot. You learn something new every day, eh?
No BlindPP with MPEG2 source... I'll swith to your suggestion instead then. BTW If my source is interlaced I have to add "Interlaced=True", right? Goes for the BlindPP command too I guess...
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02-22-2004, 09:50 PM
jorel jorel is offline
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Quote:
Originally Posted by Dialhot
Just a note : don't use blindPP with mpeg2source. Use internal PP of the mpeg2 decoder with :

"Mpeg2source("xxx.d2v",cpu=6).

Note2 : cpu=6 blur A LOT the video ! You think you aren't using any filters ? cpu=6 is equivalent to make a blur(0.2) + a spatial filter aimed on the DCT block borders.

If your script with filters used cpu=4 for instance, for sure they can have much more artefacts.
hey Phil,
you need to write a KVCD manual,
great hints!
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