Need Advise on VHS Capture [images added]

bigdog660 · 25th July 2014, 20:35

Attached are stills from a VHS capture. The shadowing problem (for a lack of a better word) is my biggest issue. Sometimes the shadow is purple/green and other times it is a orange/blue even in the same frame.

Is there a filter out there that can correct this? I'm using VirtualDub 1.10.4 as my capture and editing software. What causes this? I know it isn't a problem with my hardware as other captures do not have this issue.

Finally, is there any other issues you see here besides the color balance?

TIA for any help!

RocketJet · 26th July 2014, 15:07

I think the problem may be that the chroma signal is offset to the luminance signal. This can be adjusted using flaxen's VHS filter for VirtualDub.

In the Chroma Shift section, set the Horizontal adjustment to 10 and tick the "neg" box. Also tick the "Shift I" and "Shift Q" boxes.
You may need to experiment a bit with the adjustment to get it right.

zerowalker · 30th July 2014, 19:50

as RocketJet says.

I usually look at the Edges on the screen ("black border").

Look at the left one, you can clearly see that it's "blue/grey", this should be outside the picture.
So shift to the left until it's yellow.

I would try " ChromaShift(-10) ". (Avisynth)

Mounir · 17th August 2014, 09:49

use the CMYK Film Color Correction filter see on this page: http://www.engon.de/audio/vhs4_en.htm

25th July 2014, 20:35	#1 \| Link
bigdog660 Registered User Join Date: Mar 2004 Posts: 63	Need Advise on VHS Capture [images added] Attached are stills from a VHS capture. The shadowing problem (for a lack of a better word) is my biggest issue. Sometimes the shadow is purple/green and other times it is a orange/blue even in the same frame. Is there a filter out there that can correct this? I'm using VirtualDub 1.10.4 as my capture and editing software. What causes this? I know it isn't a problem with my hardware as other captures do not have this issue. Finally, is there any other issues you see here besides the color balance? TIA for any help! Last edited by bigdog660; 26th July 2014 at 07:18. Reason: Added images instead of waiting for attachment approval.

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26th July 2014, 15:07	#2 \| Link
RocketJet Registered User Join Date: Feb 2008 Posts: 36	I think the problem may be that the chroma signal is offset to the luminance signal. This can be adjusted using flaxen's VHS filter for VirtualDub. In the Chroma Shift section, set the Horizontal adjustment to 10 and tick the "neg" box. Also tick the "Shift I" and "Shift Q" boxes. You may need to experiment a bit with the adjustment to get it right.

30th July 2014, 19:50	#3 \| Link
zerowalker Registered User Join Date: Jul 2011 Posts: 1,121	as RocketJet says. I usually look at the Edges on the screen ("black border"). Look at the left one, you can clearly see that it's "blue/grey", this should be outside the picture. So shift to the left until it's yellow. I would try " ChromaShift(-10) ". (Avisynth)

17th August 2014, 09:49	#4 \| Link
Mounir Registered User Join Date: Nov 2006 Posts: 773	use the CMYK Film Color Correction filter see on this page: http://www.engon.de/audio/vhs4_en.htm