How Can I Correct This Collor-Problem? (Sample Inside)

[MrJacobAngle]

-Removed

[robjv1]

Is this a digital file or from a VHS tape of yours?

[MrJacobAngle]

It's from a VHS tape
But the video has then been transferred to my computer

[pirej]

Try with virtualdub plug-in "CollorMill", you can get something more acceptable, but you will never get a result like the (good one)example.

[MrJacobAngle]

I've never tired that CollorMill before, would anyone of you be so kind and try to see what you can do with it on this picture?

[pirej]

This is quick edit with CollorMill, there other way's too..

[MrJacobAngle]

Could you tell me the settings you've used for that image?

[Oddy]

I'm not sure if I've done this right, as I've never tried to upload an image from my pc to here. When I preview the post it appears at the bottom of my post.

Anyway, I used Virtualdub to do it. It was a quick adjustment based on the one frame sample.

I used 2 'internal' virtualdub filters (they come with virtualdub). First the 'Levels' filter where I set the lower setting of the Input Levels to 48. My sample was done with the 'Operate in luma instead of RGB' box checked, but unchecking it actually appears to intensify the colours a bit, so you might want to try it.
The second filter is 'HSV' adjust. Here the values were: Hue +39.7 and Saturation x177.5% with Value being left alone. The very precise numbers are simply a result of dragging the sliders!

The exact settings may need to be adjusted a bit when looking at more of the video, but it's a good starting point. It actually took me more time to type this post than to do the adjustments!

I hope this is helpful.
Rod

[MrJacobAngle]

Thanks for the usefull information guys

Is there anything I can do to change the skin tone, to a more brown color?

Cause we all know Michael Jackson was brown

[pirej]

VirtualDub.audio.SetSource(1);
VirtualDub.audio.SetMode(0);
VirtualDub.audio.SetInterleave(1,500,1,0,0);
VirtualDub.audio.SetClipMode(1,1);
VirtualDub.audio.SetConversion(0,0,0,0,0);
VirtualDub.audio.SetVolume();
VirtualDub.audio.SetCompression();
VirtualDub.audio.EnableFilterGraph(0);
VirtualDub.video.SetInputFormat(0);
VirtualDub.video.SetOutputFormat(7);
VirtualDub.video.SetMode(3);
VirtualDub.video.SetSmartRendering(0);
VirtualDub.video.SetPreserveEmptyFrames(0);
VirtualDub.video.SetFrameRate2(0,0,1);
VirtualDub.video.SetIVTC(0, 0, 0, 0);
VirtualDub.video.SetCompression();
VirtualDub.video.filters.Clear();
VirtualDub.video.filters.Add("Color Mill(2.1)");
VirtualDub.video.filters.instance[0].Config(25700, 25700, 22116, 25700, 17508, 25662, 30836, 25733, 25691, 27216, 25690, 25700, 25700, 1124, 7);
VirtualDub.audio.filters.Clear();

Copy this code, and paste it in notepad, than save it as ColorMill setings.vcf

Find the "ColorMill (2.1)" plugin (google it), put it in virtualdub plugin folder, open the foto(video) with Virtualdub, and click "file/load processing setings", than navigate to the ColorMill setings.vcf file and open it.

[MrJacobAngle]

It looks great!

But what can I do to make the skin tone more brown?
Right now the skin tone looks like it's almost black/white.

Also is there any good noise reduction tool that doesn't remove that many details?

[jagabo]

I would try gradation curves. Get a shot with something white with a good grayscale range then use that to adjust the individual RGB curves. Or take pirej's settings and bump the saturation up a bit.

[wiseant]

If you are into avisynth:

ImageReader("C:\collorfix0000.png")
converttoyv12(interlaced=false)
tweak(-40,2.2,-16,1.07,coring=false)
deen("a2d",7,0,20)

P.S. Although the png is rgb then yv12 I kept it "non-interlaced"
If you were processing an interlaced source and want to keep it interlaced then converttoyv12(interlaced=true)

[MrJacobAngle]

Thank you, Wiseant.

Do you know how I could make the skin tone a bit more brown?

[jagabo]

Saturation. And wisant's image probably needs to have the black level lowered.

[MrJacobAngle]

Indeed, I lowered the black levels from his script.

I know that I can just boost up the saturation, but when I do so, sometimes the video gets very over-saturated.
Any other way the fix the brown color of the face, without getting some of the video over-saturated?.

[jagabo]

ColorYUV(gain_y=60, gamma_y=-50, off_y=-55, cont_u=400, cont_v=400)
Tweak(hue=-30)
ChromaShift(c=-4) #shift colors left by 4 pixels



Pulling the gamma down a little more will bring out some more color in his face.

[jagabo]

Try this:

ColorYUV(gamma_y=-120, cont_u=350, cont_v=350)
Tweak(hue=-30)
ChromaShift(c=-4) #shift colors left by 4 pixels

[MrJacobAngle]

Great! Thanks Jagabo!

Also is there any way to reduce some of the noise/color-noise?

[jagabo]

Wiseant used Deen() to reduce noise a bit earlier. Check out CNR2 (chroma noise reducer) in AviSynth. You can also try the VHS (good for VHS chroma noise) and Neat Video (probably the best oll around noise reducer, but very slow) filters in VirtualDub.

[MrJacobAngle]

Thanks, also.

How can I correct this green color-noise? :/

[jagabo]

The above filters will help with that. They are temporal filters -- they require multiple consecutive frames. So you can't see what they do with a single image.

[MrJacobAngle]

Okay. I've imported your script, now the only problem is, that sometimes there are too much red and it becomes very over-saturated at some points. Anyway to fix that little problem?

[jagabo]

Yes, change the parameters for each of the filters. You'll either have to work in sections (ie, apply different filters to different parts of the video) or find some compromise setting for the whole video.

[MrJacobAngle]

Okay, thank you very much. You've really helped a lot!

[wiseant]

Adjusting the black levels, etc

ImageReader("C:\collorfix0000.png")
converttoyv12(interlaced=false)
tweak(-40,2.5,-64,1.28,coring=false)
deen("a2d",7,0,30)

[jagabo]

MrJacobAngle, as you've discovered, you shouldn't base all your corrections on one particular frame. It's always possible that that frame isn't representative of the entire video. Not every shot has full black or full light. You should look at a variety of shots to determine the nature of the problems with a particular video. And even then, VCRs often have automatic adjustments that may change (and not necessarily be right) depending on the content.

[MrJacobAngle]

I also have this problem that, when I try to reduce the noise i loose many details...

Does anyone know how this guy, could reduce the noise but still keeping the sharpness video?
(Link to his video) http://www.youtube.com/watch?v=3pZzY3p6kJc


How could I get my video to look something like this?

[poisondeathray]

Does anyone know how this guy, could reduce the noise but still keeping the sharpness video?

Why don't you ask him? He posted several MJ threads here. Search for user "kopmjj"

[MrJacobAngle]

He doesn't want to share his settings for his work, he'll only share what programs he have used. That's why I'm asking for your help guys.