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1st December 2007, 16:50 | #1 | Link |
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Need Suggestions for VERY GRAINY source
I have a 1280 x 720p source. it is VERY GRAINY to the point of be annoying and my enjoyment during viewing is adversely affected.
What is even worse and makes this grain even more noticeable is the fact that the grain DANCES around frame to frame so on as an example walls and sky your eye is drawn to this as if thousands of insects are buzzing about lol So I end up seeing that and not what I should be paying attention to. I have tried DeGrainMedian(limitY=8,limitUV=15,mode=0) and it does not even come close to helping this. it gets rid of some grain but doe not fix the dancing. I have tried vbw1=MVAnalyse(isb=true,truemotion=true,delta=1,pel=2,chroma=true,blksize=8,overlap=2,idx=1,sharp=1) vfw1=MVAnalyse(isb=false,truemotion=true,delta=1,pel=2,chroma=true,blksize=8,overlap=2,idx=1,sharp=1) vbw2=MVAnalyse(isb=true,truemotion=true,delta=2,pel=2,chroma=true,blksize=8,overlap=2,idx=1,sharp=1) vfw2=MVAnalyse(isb=false,truemotion=true,delta=2,pel=2,chroma=true,blksize=8,overlap=2,idx=1,sharp=1) MVDegrain2(last,vbw1,vfw1,vbw2,vfw2,thSAD=100,idx=1) Same result basically. However I have a feeling someone who knows MVDegrain2 very well could help me with parms to better make this work since I never used MVDegrain2 until to today. I have tried HQDN3D with interesting results. It gets the grain semi ok but same problem in that any grain left over is dancing so your eye is drawn to it. I have tried FFT3DFilter and same as all of the above and it tend to blur a little more. Though using this after some of the above with a light setting helps. I have also tried a temporal smoother after all the above and it helps some but starts to blur/lose detail. ok you can get a 9 meg clip from this link which first shows a WALL with grain then the sky with mega grain. http://www.megaupload.com/?d=Z8EUNJY4 any suggestions? Thanks! Last edited by Zep; 1st December 2007 at 17:28. |
1st December 2007, 20:54 | #5 | Link |
Resize Abuser
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MVDegrain2(last,vbw1,vfw1,vbw2,vfw2,thSAD=100,idx=1)
If you increase this 10x to oh MVDegrain2(last,vbw1,vfw1,vbw2,vfw2,thSAD=1000,idx=1) it actually works fairly well. Add these and you got a nice looking video FFT3dGPU() LimitedSharpenFaster() In terms of detail loss, the grain is what gives that clip its perceived detail. |
3rd December 2007, 05:28 | #7 | Link | |
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Quote:
ahhh very good results with some of those settings. The in between settings work very well. Leave a little grain and still keeps all the detail. thanks |
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3rd December 2007, 05:23 | #8 | Link | |
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I will give that a go thanks! |
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3rd December 2007, 05:35 | #10 | Link | |
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I will make one and put it up tomorrow along with a clip I did that came out very well in my first dozen or so tests with all the above suggestions. In fact I will un crop the original clip so you all get an better idea of the detailed stuff as well as able to compare to what I feel is the best filtered clip thus far. thanks! |
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3rd December 2007, 07:34 | #13 | Link | |
x264aholic
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Quote:
Looks almost identical to the types of clouds up there, and the noise too. It's kind of hard to tell in the picture I have here because this was post-encode, not the source file. Even if it's not 300, the grain type looks very similar to 300, and that combination you used might work just as well. Last edited by Sagekilla; 3rd December 2007 at 07:41. |
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3rd December 2007, 08:14 | #14 | Link | |
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Basically the issue is that any noise reduction that actually gets rid of the grain is going to cut the detail enough to make it very compressible. |
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4th December 2007, 21:48 | #15 | Link | |
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I have been ripping the BluRay over and over trying to get rid of the damn grain which almost ruins the movie for me ( I love the movie enough to try and fix it for my own personal tastes) I'm uploading an original clip and my best effort at grain removal now. note the size difference as well. The original clip 98 megs and the grain removal 73 megs. I compressed the clips single constant quality of Q=1 in xvid and no bframes and everything turned up to max for these clips. It shows very well the huge difference grain removal has on this movie. anyway, I thought about turning up the grain removal even more and trying a sharpen filter after but I'm afraid of losing too much detail so for now I'm trying to find a grain removal amount that I can stand and that does not hurt the detail much. I think this latest round it damn good as you will see after you DL both clips and compare. here are the clips Original With grain removal Thanks Last edited by Zep; 4th December 2007 at 22:35. |
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4th December 2007, 22:07 | #16 | Link | |
x264 developer
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As I said, HQDN3D, RemoveGrain(19), and fft3dfilter are your friends. |
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5th December 2007, 04:01 | #17 | Link | |
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I cringe at what the quality must be on your encode I tried HQDN3D, RemoveGrain(19), and fft3dfilter. none were good on their own but maybe all 3 together would be ok but I would expect loss of detail. Note if you are doing the low rez DVD then the grain will not as bad and you will need different methods and more light weight filters could do the job odds are. IMHO of course so did you look at the clips? what did you think? Last edited by Zep; 5th December 2007 at 04:04. |
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5th December 2007, 04:07 | #18 | Link | |
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The quality is quite good overall though if you're not a quality snob. You'd be quite surprised how good x264 is at low bitrates, especially when you've denoised it heavily (thus also reducing the bit cost for highest detail areas). |
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4th December 2007, 23:40 | #19 | Link | |
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@Dark Shikari: What settings did you use for HQdn3D to get it to such low bitrates? |
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4th December 2007, 23:55 | #20 | Link | |
x264 developer
Join Date: Sep 2005
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Quote:
src=last removegrain(19) removegrain(19) DeGrainMedian(mode=0) fft3dgpu(precision=2) hqdn3d(0,0,3,6) fft3dfilter(sigma=0,sharpen=1) last.mergechroma(src) Lanczos4Resize(1280,720) |
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