Line appears when doing letterboxed version at DVinfo.net

Go Back   DV Info Net > Windows / PC Post Production Solutions > What Happens in Vegas...

What Happens in Vegas...
...stays in Vegas! This PC-based editing app is a safe bet with these tips.


Reply
 
Thread Tools Search this Thread
Old April 3rd, 2008, 10:49 AM   #1
Major Player
 
Join Date: Nov 2007
Location: Finland
Posts: 317
Line appears when doing letterboxed version

Hi,

Im trying to do a letterboxed version out of my 1080p material. I'm going about it by changing the project settings to DV pal 720x576 and the material adjusts itself properly with black bars on top and bottom as expected. But there is a couple of additional pixel lines. See the picture.

Anyone know a cure for this? Or do I have to mask it?

Sami
Attached Thumbnails
Line appears when doing letterboxed version-line_problem.jpg  
Sami Sanpakkila is offline   Reply With Quote
Old April 4th, 2008, 06:01 AM   #2
Major Player
 
Join Date: Nov 2007
Location: Finland
Posts: 317
has no one ever come accross this situation?

Sami
Sami Sanpakkila is offline   Reply With Quote
Old April 4th, 2008, 06:22 AM   #3
Inner Circle
 
Join Date: Dec 2003
Location: PERTH. W.A. AUSTRALIA.
Posts: 4,356
You might have to create a four point garbage matte ( I'm not sure if I have described that correctly ) and lose just a little of the image to mask the lines out.

The lines I think come with the fully underscanned image you are now presenting. They would normally be hidden outside of the display safe-area.
Bob Hart is offline   Reply With Quote
Old April 4th, 2008, 06:27 AM   #4
Major Player
 
Join Date: Nov 2007
Location: Finland
Posts: 317
thanks Bob, I will mask them out.

Sami
Sami Sanpakkila is offline   Reply With Quote
Old April 4th, 2008, 06:48 AM   #5
Inner Circle
 
Join Date: Sep 2007
Location: Cambridge UK
Posts: 2,835
Either that of do a very fine crop in a little to fully fill the frame (using the pan and crop function). For the record this is best done on deinterlaced stuff (or true progressive like you) or you risk creating horrible "combe" effect (or what I call "venetian blind" effect) as cropping can sometimes swap the field order when done on interlaced video, depending which line is at the new "top".

Not in front of my editing PC right now but I think this can be done in the track as well so that it applies to all clips rather than having to do each individually.
__________________
Andy K Wilkinson - http://www.shootingimage.co.uk
Cambridge (UK) Corporate Video Production
Andy Wilkinson is online now   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 > Windows / PC Post Production Solutions > What Happens in Vegas...

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 05:30 AM.


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