down-rezing / keying HDV footage 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 February 23rd, 2006, 02:00 PM   #1
Tourist
 
Join Date: Feb 2006
Posts: 1
down-rezing / keying HDV footage

I'm an absolute newbie to HD/HDV and I have a couple of (hopefully) simple questions that I hoped someone here could help with.

I'm borrowing an HD100 for the weekend to shoot green screen footage of closeup of a person. The footage will be captured in Vegas and composited in After Effects with animated backgrounds. The final video will be mastered to DVD for a video art exhibition.

When I downrez to SD, should I do it in Vegas or in After Effects? Along with that, is it better to key it as HD, then down-rez to SD, or down-rez before keying? Or does it matter?

An even more basic question, if down-rezing is all done in After Effects, is it simply a matter of placing the HD clip into an SD composition and scaling it down? Is there a better method?

I would keep the entire After Effects project in HD and scale to SD just for the final disc, but unfortunately some of the background elements are coming from DV footage and will lose too much resolution scaling up.

Again, newbie questions. Hopefully someone has some answers (and patience).

Thanks.
Barry Anderson is offline   Reply With Quote
Old February 23rd, 2006, 02:05 PM   #2
Regular Crew
 
Join Date: Jul 2003
Location: New York, NY
Posts: 99
If the quality is important, I would render an uncompressed TGA quicktime (or cineform) from vegas at the full 1280x720 (make sure the smart interpolation is off or Vegas may add motion blur to your footage that isn't really there).

I would then key it at 720p in after effects and then yes, scale it down when yer done (1 comp at 720, one at 480 or whatever your final res is), this gives you more data to work with, which, in theory should make for a better key (make sure you have a well lit green screen of course).
Joe Russ 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...

Adorama
(800) 223-2500
New York, NY

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

Texas Media Systems
(512) 440-1400
Austin, TX

Precision Camera
(800) 677-1023
Austin, TX

VideoGuys
(800) 323-2325
Mineola, NY

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

 


Banner ads help sustain this site. DV Info Net is sponsored in part by:


All times are GMT -6. The time now is 06:45 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2018 The Digital Video Information Network