Jump to content


Photo

Of Frame Rate and Time Base


  • Please log in to reply
2 replies to this topic

#1 Vivek Venkatraman

Vivek Venkatraman
  • Basic Members
  • PipPipPip
  • 103 posts
  • Other

Posted 22 February 2016 - 08:24 AM

Hey,

 

So I am facing a small problem on a project I recently shot on the Sony A7s 2.

 

The film is a combination of 24 FPS shots as well as some 100 FPS shots - the issue is that with every 100 fps shot the time base in the camera changes to 100 as well.

Now my editor is stuck with 2 different time bases of 24 and 100 respectively and claims that it is a problem to edit such footage as AVID sets one timebase for the entire sequence ?

Somehow I remember testing this out on adobe premiere and it worked fine..

Is there a work around for such an issue ?

Will there be a problem for me in the conforming process ?

 

Thank you for your help :)

 

 


  • 0

#2 Satsuki Murashige

Satsuki Murashige
  • Sustaining Members
  • 3510 posts
  • Cinematographer
  • San Francisco, CA

Posted 22 February 2016 - 04:09 PM

In Premiere you can select a new timebase for an individual clip by right-clicking on it in the media browser and selecting:

Modify>Interpret Footage>Assume this frame rate [23.976].

It will help if you separate the media on your hard drive into a 23.98fps folder and a 100fps folder. That way, when you import the 100fps folder you can 'select all' and change the clip properties all at once instead of one at a time.

Don't know if Avid can do this but in the worst case scenario, just put all the 100fps footage on a 23.98 timeline in Premiere, reset all the clips to 23.98, then transcode to a codec of your choice (Prores, DNxHD, etc.) and just deliver those.
  • 0

#3 Vivek Venkatraman

Vivek Venkatraman
  • Basic Members
  • PipPipPip
  • 103 posts
  • Other

Posted 22 February 2016 - 06:00 PM

Thanks Satsuki

 

Thats helpful


  • 0


Wooden Camera

CineLab

New Pro Video - New and Used Equipment

Abel Cine

Visual Products

Metropolis Post

Paralinx LLC

Gamma Ray Digital Inc

Ritter Battery

Media Blackout - Custom Cables and AKS

Glidecam

Tai Audio

Rig Wheels Passport

Serious Gear

Broadcast Solutions Inc

Paralinx LLC

Rig Wheels Passport

CineLab

Visual Products

Glidecam

Abel Cine

New Pro Video - New and Used Equipment

Metropolis Post

Ritter Battery

Media Blackout - Custom Cables and AKS

Wooden Camera

Serious Gear

Tai Audio

Gamma Ray Digital Inc

Broadcast Solutions Inc