Jump to content


Photo

What's the "best" standard video format


  • Please log in to reply
4 replies to this topic

#1 Niki Mundo

Niki Mundo
  • Basic Members
  • PipPipPip
  • 166 posts
  • Student
  • Los Angeles

Posted 14 February 2008 - 08:40 PM

I've heard rumors that MiniDV is a poor choice for chroma-keying because of the compression affects colour or something.
But if the final product with be B&W should it matter? I plan on removing all the colour in the final stages.

Is there an ideal standard video format for this (I've heard Hi-8 is good for green-screening).

Thanks!
  • 0

#2 Scott Fritzshall

Scott Fritzshall
  • Basic Members
  • PipPipPipPip
  • 584 posts
  • Other
  • Los Angeles

Posted 15 February 2008 - 01:44 AM

MiniDV is a poor choice because it throws away a significant amount of data through compression and subsampling. It may matter less if you're going to end up as B&W, but you're still in danger of ending up with poor edges. DigiBeta is considered the professional format for SD video, and it has much less compression and subsampling (4:2:2 as opposed to 4:1:1 on NTSC or 4:2:0 PAL miniDV).
  • 0

#3 David Auner aac

David Auner aac
  • Sustaining Members
  • 1117 posts
  • Cinematographer
  • Los Angeles

Posted 15 February 2008 - 02:30 AM

Is there an ideal standard video format for this (I've heard Hi-8 is good for green-screening).


Hi Nikki,

is this one of your shrew jokes again or are you serious for once?

Cheers, Dave
  • 0

#4 John Sprung

John Sprung
  • Sustaining Members
  • 4635 posts
  • Other

Posted 15 February 2008 - 05:06 PM

The main thing to watch out for is the chroma sampling structure. It does matter even if you're going to make the final image B&W, because chroma keying uses chroma information to decide where to put the matte lines. For instance, in 4:4:4, chroma and luma have equal spatial resolution. In 4:2:2 or 4:2:0, chroma has only half the resolution of luma. In 3:1:1 it's one third, and in 4:1:1 it's one quarter.




-- J.S.
  • 0

#5 Matthew Buick

Matthew Buick
  • Basic Members
  • PipPipPipPip
  • 2345 posts
  • Student
  • Newcastle upon Tyne, UK.

Posted 17 February 2008 - 05:34 PM

Hi8 has only 260 lines of luminance. So it won't work.
  • 0


CineTape

Tai Audio

Ritter Battery

CineLab

Rig Wheels Passport

Wooden Camera

Media Blackout - Custom Cables and AKS

New Pro Video - New and Used Equipment

FJS International, LLC

Willys Widgets

Glidecam

Broadcast Solutions Inc

Aerial Filmworks

rebotnix Technologies

Paralinx LLC

Technodolly

The Slider

Gamma Ray Digital Inc

Abel Cine

Visual Products

Metropolis Post

Ritter Battery

Glidecam

Rig Wheels Passport

Willys Widgets

New Pro Video - New and Used Equipment

FJS International, LLC

Gamma Ray Digital Inc

Abel Cine

CineTape

CineLab

Broadcast Solutions Inc

rebotnix Technologies

Metropolis Post

Aerial Filmworks

Paralinx LLC

Tai Audio

The Slider

Technodolly

Wooden Camera

Visual Products

Media Blackout - Custom Cables and AKS