#1  
04-28-2014, 05:49 PM
premiumcapture premiumcapture is offline
Free Member
 
Join Date: Dec 2013
Location: Boston, MA
Posts: 585
Thanked 72 Times in 65 Posts
This comes from a DVD copy of a VHS played on apparently a very poor VCR.



Deinterlacing minimizes but the issue is still present, but it runs through the entire tape.


Attached Images
File Type: png vlcsnap-2014-04-28-18h43m56s56.png (675.1 KB, 6 downloads)
Reply With Quote
Someday, 12:01 PM
admin's Avatar
Ads / Sponsors
 
Join Date: ∞
Posts: 42
Thanks: ∞
Thanked 42 Times in 42 Posts
  #2  
04-29-2014, 10:03 AM
premiumcapture premiumcapture is offline
Free Member
 
Join Date: Dec 2013
Location: Boston, MA
Posts: 585
Thanked 72 Times in 65 Posts
Camcorder color denoiser actually took the color away from the stripe, so in this scene and many others it is much less noticeable, but on opaque, single color title pages, there is a dark line where it was. I imagine this must be a very dirty VCR.

Will post my results.
Reply With Quote
  #3  
05-01-2014, 06:44 AM
lordsmurf's Avatar
lordsmurf lordsmurf is offline
Site Staff | Video
 
Join Date: Dec 2002
Posts: 13,503
Thanked 2,448 Times in 2,080 Posts
I doubt that's a dirty VCR -- it looks like tape degradation.
What brand of tape was that? I doubt it was a good TDK, JVC, or 90s generation Silver/Gold/HiFi Maxell.
Was it a cheap Sony?
It's hard to tell if the grain is from a tape, or from a recording mode. If it's SP, that looks like a crappy Fuji tape.

- Did my advice help you? Then become a Premium Member and support this site.
- For sale in the marketplace: TBCs, workflows, capture cards, VCRs
Reply With Quote
  #4  
05-01-2014, 06:52 AM
premiumcapture premiumcapture is offline
Free Member
 
Join Date: Dec 2013
Location: Boston, MA
Posts: 585
Thanked 72 Times in 65 Posts
One of the actors from power rangers sells this vhs on a dvd as a bootleg, the source tape was recorded and sold in EP. I noticed the disc was named dvdirect7848484 or something, so I imagine he plays the tape and presses record each time.

Camcorder color denoise took out the color, but there is still a dark streak. Neatvideo when properly takes care of it for the most part, but I might try out checkmate with avisynth and a few others youve mentioned.
Reply With Quote
  #5  
05-01-2014, 06:56 AM
premiumcapture premiumcapture is offline
Free Member
 
Join Date: Dec 2013
Location: Boston, MA
Posts: 585
Thanked 72 Times in 65 Posts
Attached is with CCD applied, much better but there is still a slight dark line


Attached Images
File Type: png vlcsnap-2014-05-01-07h54m47s225.png (515.4 KB, 12 downloads)
Reply With Quote
  #6  
05-01-2014, 07:26 AM
kpmedia's Avatar
kpmedia kpmedia is offline
Site Staff | Web Hosting, Photo
 
Join Date: Feb 2004
Posts: 4,311
Thanked 374 Times in 341 Posts
Those chroma blips tend to only last a few frames at most. When watching the video, do you even see it anymore? I doubt it. I would even know there's a problem on that screencap if I didn't know the whole story.

Don't overprocess video in the futile attempt to make it perfect. Just make it better.

- Did my advice help you? Then become a Premium Member and support this site.
- Please Like Us on Facebook | Follow Us on Twitter

- Need a good web host? Ask me for help! Get the shared, VPS, semi-dedicated, cloud, or reseller you need.
Reply With Quote
  #7  
05-01-2014, 08:12 AM
themaster1 themaster1 is offline
Free Member
 
Join Date: Feb 2011
Location: France
Posts: 497
Thanked 99 Times in 83 Posts
should be removable.
video sample please
Reply With Quote
  #8  
05-01-2014, 06:28 PM
premiumcapture premiumcapture is offline
Free Member
 
Join Date: Dec 2013
Location: Boston, MA
Posts: 585
Thanked 72 Times in 65 Posts
Attached is a minute made in Handbrake. I tried to pick out a spot where it shows throughout different scenes.

I used a combo of camcorder color denoise and then neatvideo and it cleaned it up significantly, but please share if theres a better way.

thanks!


Attached Files
File Type: mp4 sample.mp4 (19.00 MB, 19 downloads)
Reply With Quote
  #9  
05-03-2014, 09:52 AM
themaster1 themaster1 is offline
Free Member
 
Join Date: Feb 2011
Location: France
Posts: 497
Thanked 99 Times in 83 Posts
good news is this stripe (the middle stripe i'm talking) is only present on UV, bad news is it's on all frames so good luck to get rid of it.
Now that i think about it maybe some kind of delogo filter would do it, it's not gonna be a piece of cake no matter which way to take the stick.
If you want to filter only the stripe zone you can use this:

Code:
DirectShowSource("sample.mp4",fps=29.970)
assumetff()
converttoyv12(interlaced=true)

# for the horizontal stripe
X1 = 0
Y1 = 176
X2 = 720
Y2 = 184

# Make the values MOD4

X1 = X1 - (X1 % 4)
Y1 = Y1 - (y1 % 4)
X2 = (X2 + 3) / 4 * 4
Y2 = (Y2 + 3) / 4 * 4


Active = crop(X1,Y1,X2-X1,Y2-Y1)
Above = Y1 > 0 ? crop(0,0,width(),Y1) : NOP
Below = Y2 < height() ? crop(0,Y2,width(),height()-Y2) : NOP
Left = X1 > 0 ? crop(0,Y1,X1,Y2-Y1) : NOP
Right = X2 < width() ? crop(X2,Y1,width()-X2,Y2-Y1) : NOP
Last = Active

######################
# Change below, put whatever filter you need (mergechroma+fft3dfilter is not working here):

mergechroma(last)
fft3dfilter(bt=4,sigma=19,plane=3,degrid=1)
fft3dfilter(bt=4,sigma=19,plane=3,degrid=1)
fft3dfilter(bt=4,sigma=19,plane=3,degrid=1)
mergeluma(last)

######################

IsClip(Left) ? StackHorizontal(Left, Last) : NOP
IsClip(Right) ? StackHorizontal(Last, Right) : NOP
IsClip(Above) ? StackVertical(Above, Last) : NOP
IsClip(Below) ? StackVertical(Last, Below) : NOP

return Last

Last edited by themaster1; 05-03-2014 at 10:24 AM.
Reply With Quote
  #10  
05-03-2014, 01:28 PM
volksjager volksjager is offline
Free Member
 
Join Date: Nov 2011
Posts: 1,027
Thanked 212 Times in 190 Posts
looks to me like the source VHS has a crease in the tape, probably played it in a shitty deck with a bad pinch roller.
ive had a few tapes like that
Reply With Quote
  #11  
05-03-2014, 08:18 PM
premiumcapture premiumcapture is offline
Free Member
 
Join Date: Dec 2013
Location: Boston, MA
Posts: 585
Thanked 72 Times in 65 Posts
Quote:
Originally Posted by themaster1 View Post
good news is this stripe (the middle stripe i'm talking) is only present on UV, bad news is it's on all frames so good luck to get rid of it.
Now that i think about it maybe some kind of delogo filter would do it, it's not gonna be a piece of cake no matter which way to take the stick.
If you want to filter only the stripe zone you can use this:
What would be left in its place? Would it be a dark line, or would it appear untouched?
Reply With Quote
  #12  
05-08-2014, 12:05 PM
themaster1 themaster1 is offline
Free Member
 
Join Date: Feb 2011
Location: France
Posts: 497
Thanked 99 Times in 83 Posts
ideally it should be removed, take a look here:
http://forum.videohelp.com/threads/2...ghlight=stripe

Like i said the problem on your video is that the stripe is on all frames so i don't see how you could remove that at the moment
Reply With Quote
  #13  
05-08-2014, 02:28 PM
premiumcapture premiumcapture is offline
Free Member
 
Join Date: Dec 2013
Location: Boston, MA
Posts: 585
Thanked 72 Times in 65 Posts
Quote:
Originally Posted by themaster1 View Post
ideally it should be removed, take a look here:
http://forum.videohelp.com/threads/2...ghlight=stripe

Like i said the problem on your video is that the stripe is on all frames so i don't see how you could remove that at the moment
Camcorder color denoise will take the color away, but it leaves a dark line. Using neatvideo, it will fill it in at the expense of detail. I will try this this weekend and report back.
Reply With Quote
  #14  
07-23-2014, 07:36 AM
lordsmurf's Avatar
lordsmurf lordsmurf is offline
Site Staff | Video
 
Join Date: Dec 2002
Posts: 13,503
Thanked 2,448 Times in 2,080 Posts
Quote:
Originally Posted by premiumcapture View Post
I will try this this weekend and report back.
I think the weekend is over now.

What's the verdict on this?

- Did my advice help you? Then become a Premium Member and support this site.
- For sale in the marketplace: TBCs, workflows, capture cards, VCRs
Reply With Quote
  #15  
07-23-2014, 07:49 AM
premiumcapture premiumcapture is offline
Free Member
 
Join Date: Dec 2013
Location: Boston, MA
Posts: 585
Thanked 72 Times in 65 Posts
CCD removed the color from the stripe, neat video sampling the dark part blurred it away and it looked fine and took out the noise that i needed to take out anyways.
Reply With Quote
Reply




Similar Threads
Thread Thread Starter Forum Replies Last Post
Color calibrating your monitor? (Seeing "true" color of your video captures) baywatch242000 Project Planning, Workflows 4 04-09-2014 01:30 PM
Static rainbow spot on VHS capture - fixable? premiumcapture Restore, Filter, Improve Quality 9 02-15-2014 01:51 PM
Vertical stripe caused by TBC on Panasonic AG-1980 - why? moxiecat Capture, Record, Transfer 3 08-15-2011 02:10 PM
For Sale: Panasonic AG-1980 VCR, broken but maybe fixable TBC, Proc Amp, & more *Bix* Marketplace 3 03-11-2011 05:08 PM
DV color space harmful to analog color quality? Verify? DeXeSs Capture, Record, Transfer 6 06-27-2010 01:48 AM

Thread Tools



 
All times are GMT -5. The time now is 11:21 AM