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23.98 or 24fps conversion

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Michael Williams
23.98 or 24fps conversion
on Sep 1, 2010 at 3:16:26 pm

I'm shooting with the Sony Ex1 1080 24p, transferred to .mov through XDCAM Transfer, then using MPEG streamclip to convert to 24fps prores 422 files. I'm also shooting with Cannon 5D taking the footage and doing the same conversion to 24fps prores. My question is my editing base in FCP is now exactly 24fps as opposed to 23.98 if I didn't go through MPEG streamclip. What is the advantage to editing in a timeline base of 24fps or 23.98.

I know audio must match up but as far as final output and other issues whats the difference.

Most likely my final output will be blue ray or HDCAM.


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gary adcock
Re: 23.98 or 24fps conversion
on Sep 1, 2010 at 3:35:46 pm

[Michael Williams] "What is the advantage to editing in a timeline base of 24fps or 23.98. "

23.98 allows for realtime downconversion and playback on NTSC systems.

use 23.98, it will make you life much easier, many displays show sync or judder issues with 24.0 content.

gary adcock
Studio37

Post and Production Workflow Consultant
Production and Post Stereographer
Chicago, IL

http://blogs.creativecow.net/24640



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Michael Williams
Re: 23.98 or 24fps conversion
on Sep 1, 2010 at 4:22:34 pm

Great appreciate the info


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Dave LaRonde
Re: 23.98 or 24fps conversion
on Sep 1, 2010 at 4:06:11 pm

As always, Gary's advice is on the button.

I would only add that 23.98 is just a nickname for the ACTUAL NTSC film frame rate, which is 23.976 fps. There are a few applications where typing in 23.976 is absolutely essential when you work in them. After Effects is one, and I'm pretty sure Cinema Tools is another.

You'd better keep that in mind, or frustration will follow.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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