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slight shudder

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Andres Cuervo
slight shudder
on Feb 16, 2018 at 6:06:30 pm

PREMIERE Pro CS5.5 NTCS, 1920X1080, 24fps, Aspect ratio 16:9, Mbps 32-40
Have exported video, happy with result except slight shudder just noticeable in some clips in slow moving objects. Reminiscent of films shot at 5 or 6 frames per second. What is wrong?


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Dave LaRonde
Re: slight shudder
on Feb 16, 2018 at 6:21:16 pm

It's a phenomenon known as judder. DP's have been dealing with it since the days of DW Griffith. Once shot, there's no way to fix it.

Your options are to re-shoot at a different frame rate (not recommended) or to re-shoot, changing the speed of your moves.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Andres Cuervo
Re: slight shudder
on Feb 16, 2018 at 8:29:37 pm

Thanks dave, I guess I'll just have to live with it for this video. Next video I'll try shooting with different frame rates to see which works best.


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Andres Cuervo
Re: slight shudder
on Feb 16, 2018 at 8:32:27 pm

PS I mean different film speed.


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Chris Wright
Re: slight shudder
on Feb 16, 2018 at 9:27:30 pm

sometimes you can add motion blur with reelsmart motion blur or timewarp. shutter should usually be 1/ (2 * fps). 24fps with 1/200th shutter can look jerky compared to 1/48th shutter so fps doesn't always directly align with judder, although they are heavily related in a panning sense.


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Andres Cuervo
Re: slight shudder
on Mar 5, 2018 at 1:33:31 am

Hi , my (very amateur video I know) is finally up on youtube Partly thanks to your help so thanks and here is the link. Hope you enjoy it.







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