DV vs. DVCAM compression? at DVinfo.net

Go Back   DV Info Net > The Tools of DV and HD Production > The Long Black Line

The Long Black Line
Tape, tape and more tape; and decks; HDV, DV, VHS and more.


Reply
 
Thread Tools Search this Thread
Old March 23rd, 2005, 11:31 PM   #1
New Boot
 
Join Date: Aug 2004
Location: london / bournemouth
Posts: 22
(dv cam) ...

im still pretty new to cameras and stuff, apologise for stupid questions

i noticed that when colour correcting mini dv footage in certain ways, sometimes the compression can become quite apparent

i know dv cam is pretty similar to mini dv apart from the dot pitch or whatever its called, but is the compression noticably diferent?

many thanks,
alex
Alex Harding is offline   Reply With Quote
Old March 23rd, 2005, 11:50 PM   #2
Major Player
 
Join Date: Apr 2004
Location: Austin, Texas
Posts: 704
"i know dv cam is pretty similar to mini dv apart from the dot pitch or whatever its called, but is the compression noticably diferent?"

Track pitch
:)

As far as compression goes, DV and DVCam use the same exact compression. In terms of image quality there is absolutely no difference between the two.

Check out Adam Wilt's DV FAQ for some more info.
__________________
Luis Caffesse
Pitch Productions
Austin, Texas
Luis Caffesse is offline   Reply With Quote
Old March 28th, 2005, 05:25 PM   #3
Major Player
 
Join Date: Jun 2004
Location: McLean, VA United States
Posts: 749
It's probably not the compression so much as the arithmetic with which the color correction is done. If you make large gamma corrections and then apply other filters in a system that uses integer arithmetic "posterization" is likely to result. The best programs do all the math in floating point, cost lots more and take longer to render but give better looking results.
A. J. deLange is offline   Reply With Quote
Old March 29th, 2005, 04:35 PM   #4
Major Player
 
Join Date: Jan 2005
Location: Ottawa, ON
Posts: 471
There is NO DIFFERENCE. No different algorithms, no different chroma sampling -- it is the same video codec. The tape moves faster through the device, there is a slightly different audio sampling method & the data track allows for addressable bits.

DV, DVCam, DVCPro & Digital 8 all use identical video DV25 encoding.

GB
R Geoff Baker 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 > The Tools of DV and HD Production > The Long Black Line

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 05:07 PM.


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