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
  • 92 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
  • 4023 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
  • 92 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
  • 4023 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


FJS International, LLC

Wooden Camera

Tai Audio

Technodolly

rebotnix Technologies

Media Blackout - Custom Cables and AKS

Glidecam

CineLab

Ritter Battery

Abel Cine

Gamma Ray Digital Inc

CineTape

Aerial Filmworks

Metropolis Post

The Slider

Broadcast Solutions Inc

Paralinx LLC

Rig Wheels Passport

Visual Products

Willys Widgets

Wooden Camera

Glidecam

Metropolis Post

Ritter Battery

Visual Products

Broadcast Solutions Inc

CineTape

rebotnix Technologies

Media Blackout - Custom Cables and AKS

Abel Cine

The Slider

Gamma Ray Digital Inc

Paralinx LLC

CineLab

Rig Wheels Passport

Tai Audio

FJS International, LLC

Technodolly

Willys Widgets

Aerial Filmworks