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15th January 2022, 09:25 | #1 | Link |
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Very difficult deflicker
What kind of deflicker to fix such a video?
https://drive.google.com/file/d/1tqX...ew?usp=sharing |
15th January 2022, 11:17 | #2 | Link |
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Join Date: May 2006
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In AviSynth you can try with
Code:
deflicker() descratch() spotless() Left: original Right: deflicked https://www.mediafire.com/file/e0y1x...icked.mp4/file Last edited by Sharc; 15th January 2022 at 11:40. Reason: link added |
15th January 2022, 11:52 | #3 | Link |
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Not bad, but:
1. Changed color space. probably https://forum.doom9.org/showthread.php?t=175401 2. The flickering of three large spots on the right has not been eliminated. |
15th January 2022, 18:00 | #4 | Link | |
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Quote:
The actual "colorspace" does not change , it's probably your method of viewing Your provided source file was untagged 4:2:0 , but at 1440x1080 - so many programs will assume 709 for the RGB display conversion because the height is >576 Sharc's was resized to 1440x540 ,but the encoding was also untagged . Many programs will use 601 instead of 709 for the display conversion, because the height is 540 (<576). If you are encoding a file you can tag the proper colorimetry flags. Depending on your workflow and programs, there might be other considerations as well, you'd have to provide more info |
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15th January 2022, 19:02 | #5 | Link |
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One seldom-discussed method to suppress flicker is to use DCT=1 in the MAnalyze line when using MDegrain to reduce noise. When used after Deflicker you often get extremely good results. I use this on film sources all the time. I've queued up this link to take you directly to a "before/after" which shows flicker reduction:
https://www.youtube.com/watch?v=tBAHzO7rJS0&t=115s Here is the code I use (in addition to a Deflicker call): Code:
prefiltered = RemoveGrain(stabcrop,2) superfilt = MSuper(prefiltered, hpad=32, vpad=32,pel=2) super= MSuper(stabcrop, hpad=32, vpad=32,pel=2) halfblksize= (block_size>4) ? block_size/2 : 4 halfoverlap= (block_over>2) ? block_over/2 : 2 bvec1 = MAnalyse(superfilt, isb = true, delta = 1, blksize=block_size, overlap=block_over,dct=1) bvec1 = MRecalculate(super, bvec1, blksize=halfblksize, overlap=halfoverlap,thSAD=100) fvec1 = MAnalyse(superfilt, isb = false, delta = 1, blksize=block_size, overlap=block_over,dct=1) fvec1 = MRecalculate(super, fvec1, blksize=halfblksize, overlap=halfoverlap,thSAD=100) bvec2 = MAnalyse(superfilt, isb = true, delta = 2, blksize=block_size, overlap=block_over,dct=1) bvec2 = MRecalculate(super, bvec2, blksize=halfblksize, overlap=halfoverlap,thSAD=100) fvec2 = MAnalyse(superfilt, isb = false, delta = 2, blksize=block_size, overlap=block_over,dct=1) fvec2 = MRecalculate(super, fvec2, blksize=halfblksize, overlap=halfoverlap,thSAD=100) denoised=stabcrop.MDegrain2(super, bvec1,fvec1,bvec2,fvec2,thSAD=denoising_strength).levels(0,gamma,255,0,255).tweak(sat=saturation).unsharpmask(PRE_sharp_ness,PRE_radi_us,0) |
15th January 2022, 23:19 | #6 | Link |
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Good work, John !
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16th January 2022, 07:36 | #7 | Link |
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John,
Code:
super= MSuper(stabcrop, hpad=32, vpad=32,pel=2,Levels=1) (All levels only needed for MAnalyse() on Superfilt, there is no MAnalyse() on Super clip)
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16th January 2022, 16:22 | #8 | Link |
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There is Neat Video
https://www.youtube.com/watch?v=r_F6D5lvB3I |
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deflicker, difficult deflicker |
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