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15th June 2009, 18:36 | #1 | Link |
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anime encoding
Hi.. I jst got a problem on encoding a anime series. In dark areas of the anime i can see some sort rainbows colors and moving pixels. its like that on the DVD as well. what filters would i need to use to minimize this any ideas?
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16th June 2009, 07:17 | #4 | Link |
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$5 says that Mr. "|SeNsUi|" (lol) won't be returning, but:
"rainbow colors": Now, this could just be rainbowing, but since he says it's in "dark areas", my guess is that it's banding from MPEG fail. In which case, the solution is to add lots of noise. If it's actually rainbowing, the solution is to blur the crap out of the chroma. "moving pixels": Could be blocks (?), dotcrawl (unlikely), grain/noise (?), something else (?). The solution to all of these is to blur the crap out of the luma (and chroma if necessary). |
16th June 2009, 14:59 | #7 | Link |
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Banding, not rainbowing, is the problem here, apart from what Ghitulescu pointed out. Use gradfun2db, gradfun2dbmod, other noise/grain generators.
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16th June 2009, 16:32 | #9 | Link |
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The "best" way to deinterlace it would be to actually *look at it* instead of using some dumb script (lol megui). Anyway, in screenshot 1, I see a field blend. This is probably due to your ivtc not finding a match and deciding to blend two fields together. You can make it interpolate instead which might look a bit better. On his shirt and on the wall, the problem you are seeing is not rainbowing but banding. Add some noise. On the second screenshot, what you're seeing is blocking on his shirt. Blur it out with dfttest, fft3d, deblock_qed, or some other blurring filter. Alternatively, you could just add even more noise and it'll cover that up too.
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16th June 2009, 17:16 | #10 | Link |
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the first screenshot i posted the clip was playing i never paused it and tookk screen shot which is why it looks like that. cud sum1 give me a good setting for grad.. i already use fft3d but im still a newbie dunno the best to add noise.
my setting right now is FFT3dFilter(sigma=1.5, bt=3, bh=50,bw=50, sharpen=0.5, measure=false, degrid=1) |
16th June 2009, 18:33 | #11 | Link | |
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Quote:
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16th June 2009, 21:56 | #14 | Link | |
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Quote:
gradfun2db() takes a float argument that controls its strength. The default is 1.2 IIRC
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17th June 2009, 00:50 | #16 | Link |
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How can you raise 1.2 to 1.001? And I don't know what you mean by "strange artifacts appear everywhere". I haven't seen any problems (other than the non-processing of edges). With a high strength you get a blurring effect.
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