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31st July 2009, 22:45 | #1 | Link |
Registered User
Join Date: Mar 2008
Posts: 60
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Classical movie - increasing brightness/contrast
Good evening!
I'm currently encoding a DVD with a b/w movie that's in a very bad shape. A PAL-to-NTSC transcode (with blended frames), poor contrast etc. I've done some tests using tdeint & srestore (to get the original 25fps), mvdegrain2 (to remove the ugly noise), LimitedSharpenFaster (to sharpen the image) but my results in regards to improvements of brightness & contrasts were not satisfactory. More exactly, I want to increase the brightness while keeping a clear, natural image. The screenshots below are provided as an ilustration to the levels I'd like to accomplish. It's quite logical that to reach that clarity is a little bit out of touch. I'm still experimenting so any advice would be very much welcomed! Sample : http://rapidshare.com/files/262228093/1.vob.html Something among this lines (in terms of brightness/contrast, of course) would be lovely : And maybe in a dream of black and white : Last edited by crasus; 1st August 2009 at 00:36. |
2nd September 2009, 16:20 | #4 | Link |
Registered User
Join Date: Mar 2008
Posts: 60
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Thanks for the sugestions!
I've been experimenting for two weeks now but unfortunately I was unable to reach a satisfying result. Whenever I managed to get the b/w levels I wanted, the noise was so damn strong, it made the image unfilterable with anything I know off (mvdegrain, fft3d, degrainmedian etc.) Any additional help is much appreciated. Thank you! |
2nd September 2009, 20:42 | #5 | Link |
Quality Freak
Join Date: Jun 2007
Location: Area 52
Posts: 597
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This seems to be alright to me:
source = last vectors = source.MVAnalyseMulti(refframes=4, pel=2, overlap=4, sharp=1, idx=1) source.MVDegrainMulti(vectors,thSAD=650,idx=1) LimitedSharpenFaster(ss_x=1.8, ss_y=1.8, smode=4, strength=180, overshoot=1, undershoot=1) greyscale() levels(35,1.0,135,0,200) crop( 8, 2, -8, 0) spline36resize(640,480) |
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