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HDCAM SR 5800 Frame rates

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Daniel News
HDCAM SR 5800 Frame rates
on Feb 17, 2010 at 5:13:13 pm

Hi guys,

I've been asked to produce an easy guide to frame rate changes on the SRW 5800.

Now the majority of stuff we do is 24fps to 25fps so we change that by playing it at 104% ( I'm in London )but my calculation for 23.98fps to 29.97fps was 132% but I read in somewhere that it's a change of 125%.

What is the correct answer? I know the machines do the math and I shouldn't be too worried but in terms of sending out info to other members of staff I'd like to be spot on.

If anyone as any chart or anything usefull I'd be very grateful.

Thanks

D


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gary adcock
Re: HDCAM SR 5800 Frame rates
on Feb 17, 2010 at 9:05:45 pm

[Daniel News] "but my calculation for 23.98fps to 29.97fps was 132% but I read in somewhere that it's a change of 125%."

but thats not how it works Daniel.

In NTSC land we add dupe frames called "pulldown" to pad the additional frames to get from 23.98- 29.97. These are most often laid down in a 2-3 pattern where the first frame has one duplicate and the second frame as 2 duplicates.



gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows for the Digitally Inclined
Chicago, IL

http://blogs.creativecow.net/24640


http://library.creativecow.net/articles/adcock_gary/AJAIOHD.php




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