Jump to content


Photo

"conversion" from bitdepth to color sampling and data rate


  • Please log in to reply
3 replies to this topic

#1 davide sorasio

davide sorasio
  • Basic Members
  • PipPip
  • 93 posts
  • Student
  • New York

Posted 14 June 2016 - 01:54 PM

Hello everybody, weird question here, I hope it's not too confusing. I'm using a Small HD AC7 wich is a 8 bit monitor. I am sending to it a 422 1.5G signal from the Arri Amira, and everything is kk, but I could not see an image when trying to send 444 3G. I understand the basis of color sampling, what i cannot understand is the passage from knowing my bitdepth to understanding the data rate and color sampling a monitor is capable of handling. In simplier words, is there a way I could have known that having a 8bit monitor I could not send a 444 image through sdi?


  • 0

#2 Tyler Purcell

Tyler Purcell
  • Sustaining Members
  • 4169 posts
  • Other
  • Los Angeles

Posted 14 June 2016 - 02:06 PM

Most monitors are 1.5G 8 bit 422 and they can't accept 3G 10 bit 444.

Having setup many post production facilities before, unless a monitor is advertised to accept 3G 444, it most likely doesn't. It's a totally different class of electronics necessary.
  • 1

#3 davide sorasio

davide sorasio
  • Basic Members
  • PipPip
  • 93 posts
  • Student
  • New York

Posted 14 June 2016 - 02:50 PM

Most monitors are 1.5G 8 bit 422 and they can't accept 3G 10 bit 444.

Having setup many post production facilities before, unless a monitor is advertised to accept 3G 444, it most likely doesn't. It's a totally different class of electronics necessary.

Thanks a lot Tyler!  One last thing, from my previous post, how do you know that 10bit is 444 3G? Is there anything like 422 10 bit?


  • 0

#4 Tyler Purcell

Tyler Purcell
  • Sustaining Members
  • 4169 posts
  • Other
  • Los Angeles

Posted 14 June 2016 - 03:22 PM

Well, you don't really know unless you're in the menu checking out what the camera is set for.

The Alexa can down sample to 422 no problem and MOST monitors will accept 10 bit 422 as an HDSDI source, even when converted to HDSDI or DVI. It's only when dealing with 444 that things become really sticky.
  • 0


Gamma Ray Digital Inc

Abel Cine

Media Blackout - Custom Cables and AKS

Wooden Camera

Aerial Filmworks

Paralinx LLC

CineLab

New Pro Video - New and Used Equipment

FJS International, LLC

Willys Widgets

CineTape

Rig Wheels Passport

Broadcast Solutions Inc

rebotnix Technologies

Ritter Battery

Tai Audio

Metropolis Post

Technodolly

Glidecam

The Slider

Visual Products

Broadcast Solutions Inc

CineLab

Abel Cine

Rig Wheels Passport

Technodolly

CineTape

Metropolis Post

FJS International, LLC

Aerial Filmworks

Gamma Ray Digital Inc

Ritter Battery

Wooden Camera

rebotnix Technologies

Media Blackout - Custom Cables and AKS

The Slider

Paralinx LLC

Tai Audio

New Pro Video - New and Used Equipment

Glidecam

Visual Products

Willys Widgets