Dead pixel is... undead...zombie pixel? at DVinfo.net

Go Back   DV Info Net > JVC ProHD & MPEG2 Camera Systems > JVC GY-HD Series Camera Systems

JVC GY-HD Series Camera Systems
GY-HD 100 & 200 series ProHD HDV camcorders & decks.


Reply
 
Thread Tools Search this Thread
Old September 18th, 2009, 11:58 PM   #1
Major Player
 
Join Date: Mar 2005
Location: Portland, Oregon
Posts: 249
Dead pixel is... undead...zombie pixel?

Help. I've got a dead pixel that refuses to be "killed" by the JVC "dead pixel menu service thing"

I've run the process 3 times and it still won't kill this sucker. It's always worked fine in the past but this one... keeps rising from the dead. And of course it is dead center...

I've left the camera on for hours, wrapped it in a jacket, gained up to 18....

I don't think I have filled the "fixed pixel memory". Is their some kind of indication that the memory is full?

More info: I can see it at 0db but it does not show up against a black background. I seem to recall most dead pixels being white. I'm wondering if it's only "mostly dead"...

Any tips?
Burk Webb is offline   Reply With Quote
Old September 19th, 2009, 10:06 AM   #2
Major Player
 
Join Date: Apr 2007
Location: NJ, USA
Posts: 339
Quote:
Originally Posted by Burk Webb View Post
Help. I've got a dead pixel that refuses to be "killed" by the JVC "dead pixel menu service thing"

I've run the process 3 times and it still won't kill this sucker. It's always worked fine in the past but this one... keeps rising from the dead. And of course it is dead center...

I've left the camera on for hours, wrapped it in a jacket, gained up to 18....

I don't think I have filled the "fixed pixel memory". Is their some kind of indication that the memory is full?

More info: I can see it at 0db but it does not show up against a black background. I seem to recall most dead pixels being white. I'm wondering if it's only "mostly dead"...

Any tips?
Hi!

Recently my HD7 got one dead pixel, after use of two years. I was so much disappointed, its clearly visible, its unfortunet! It disapears some time, but it is there still. I do not know how we can deal with dead pixel, I guess maybe some editing software can help do someting!

Please if someone know solution please write here.

Thanks,
Kaushik Parmar is offline   Reply With Quote
Old September 19th, 2009, 12:34 PM   #3
Major Player
 
Join Date: Mar 2007
Location: california North and South
Posts: 635
I do not believe the HD7 line had any user controls to mask the dead pixels. Might want to contact JVC service and ask. As far in post you can mask and lay it over your video. Easiest way is to get the camera heated up, (leave on for at least 15 minutes) preferrably on a hot day, put the lens cap on, record some footage. capture. do a frame grab. export as a jpg or pic or what ever. Import into photoshop. Copy the image and make a new image so the bottom layer is clear. Now create a 3rd layer and cover up the offending pixel on the new layer with a color brush... hide (unklick) the 2nd layer. export or save as a png, psd or other format that retains layers and clear data without turning it white like a jpg. IMport into your NLE. place on top of your video and stretch it over your scenes. Adjust color and brightness of that layer as your scenes change. Not impossible, just annoying. It's funny. I often see green dead pixels on various HD channels shot with Sony XDcam and other $30k-$60k cameras and they don't bother to hide the pixel in post. Hopefully that made sense. 3 grande coffees and no breakfast here, so i may have skipped a step or not explained it well.....
Alex Humphrey is offline   Reply With Quote
Old September 19th, 2009, 04:13 PM   #4
Regular Crew
 
Join Date: Jun 2004
Location: Hollywood, CA and Roma, Italia
Posts: 155
Quote:
Originally Posted by Burk Webb View Post
Help. I've got a dead pixel that refuses to be "killed" by the JVC "dead pixel menu service thing"

I've run the process 3 times and it still won't kill this sucker. It's always worked fine in the past but this one... keeps rising from the dead. And of course it is dead center...

I've left the camera on for hours, wrapped it in a jacket, gained up to 18....

I don't think I have filled the "fixed pixel memory". Is their some kind of indication that the memory is full?

More info: I can see it at 0db but it does not show up against a black background. I seem to recall most dead pixels being white. I'm wondering if it's only "mostly dead"...

Any tips?
It might be a "stuck" pixel (think "Twinkle, twinkle little star"). Stuck pixels can't be masked by the JVC masking program. Good/bad news is that it will (most likely) eventually die, and then it can be masked.
__________________
Enzo Giobbé
www.enzogiobbe.com
Enzo Giobbé is offline   Reply With Quote
Old September 23rd, 2009, 07:01 PM   #5
Major Player
 
Join Date: Mar 2005
Location: Portland, Oregon
Posts: 249
Thanks for the replies folks, I guess I'll keep trying. The stuck pixel idea sounds like it's in the right ballpark.
Burk Webb is offline   Reply With Quote
Old September 23rd, 2009, 09:14 PM   #6
Regular Crew
 
Join Date: Jul 2006
Location: FTW Texas
Posts: 77
Quote:
Originally Posted by Kaushik Parmar View Post
Hi!

Recently my HD7 got one dead pixel, after use of two years. I was so much disappointed, its clearly visible, its unfortunet! It disapears some time, but it is there still. I do not know how we can deal with dead pixel, I guess maybe some editing software can help do someting!

Please if someone know solution please write here.

Thanks,
I use final cut pro and found an excellent plug-in that works great. Google dead pixel repair plug-in and whatever editing software you are using and you should find a plug-in that will work.
David Allen Smith is offline   Reply With Quote
Old September 28th, 2009, 12:50 AM   #7
Trustee
 
Join Date: Apr 2006
Location: United States
Posts: 1,158
BorisFX has a Pixel Fixer plug as part of their BCC filter set. the filter has 10 fixers available. works perfect for the job. once you have it setup on one clip, just dupe it onto all the other clips that are problems.
Steve Oakley is offline   Reply With Quote
Old September 30th, 2009, 04:13 PM   #8
Regular Crew
 
Join Date: Jun 2004
Location: Hollywood, CA and Roma, Italia
Posts: 155
Zombie pixel.

Burk, I love that term!

From now on, I will forever call a stuck pixel, a "zombie pixel (c) Burk Webb".
__________________
Enzo Giobbé
www.enzogiobbe.com
Enzo Giobbé is offline   Reply With Quote
Old October 2nd, 2009, 03:42 PM   #9
Trustee
 
Join Date: Sep 2005
Posts: 1,063
Could be one other - scarier - possibility: The jvc can only effectively mask pixels only so many times, then it won't do again.

Not sure what the number is (there was a thread directly on point but I can't find it).

Bottom line, don't use the masking sequence more than you have to.

john
John Vincent is offline   Reply With Quote
Old October 3rd, 2009, 02:56 AM   #10
Major Player
 
Join Date: Mar 2005
Location: Portland, Oregon
Posts: 249
Just an update. After turning the camera off and letting it rest for the night my "zombie pixel" seems to have crawled back to the grave.... at least at zero db gain.

Glad you like the term Enzo :)

The pixel fix memory being full is my main concern. I don't think I've overused it, but I have used this camera a bunch and have fixed a dead pixel or three in that time. I'll see what happens over the next week.
Burk Webb is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > JVC ProHD & MPEG2 Camera Systems > JVC GY-HD Series Camera Systems

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 10:09 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network