8mm Forum: Can re-sizing and cropping a clip cause 'jerkiness' ?

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Topic: Can re-sizing and cropping a clip cause 'jerkiness' ?

Bill Vendasi
Film Handler

Posts: 45
From: Dover, NH, USA
Registered: Apr 2015

posted July 12, 2017 07:13 PM

I re-sized and cropped some 640 x 480 clips up to 720 x 540.

Now they are fine during still scenes, but seem to be jumpy or jerky when there's movement.

Could this be from re-sizing or cropping?

I just need to know if that's possible.

Thanks.

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Adrian Winchester
Film God

Posts: 2941
From: Croydon, London, UK
Registered: Aug 2004

posted July 13, 2017 11:41 AM

You ideally need to ask this in the 'General Yak' board of the Forum, because you've posted in the 8mm film section - so the question may not be viewed by some with digital interests.

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Adrian Winchester

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Stuart Reid
Jedi Master Film Handler

Posts: 720
From: Worthing, West Sussex, UK
Registered: Feb 2009

posted July 13, 2017 12:21 PM

Bill, could be any sort of issue with frame rates, interlacing, encoding or transcoding. Need to know more about your workflow to try to troubleshoot.

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Bill Vendasi
Film Handler

Posts: 45
From: Dover, NH, USA
Registered: Apr 2015

posted July 13, 2017 05:45 PM

Thanks, I think you both answered me. Looks like something I changed just the the other day.

Thanks again.

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Bill Brandenstein
Phenomenal Film Handler

Posts: 1632
From: California
Registered: Aug 2007

posted July 14, 2017 04:26 PM

If the source file is interlaced, it will look awful if resized like that. You need to use a deinterlacing tool before the resize.

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Bill Vendasi
Film Handler

Posts: 45
From: Dover, NH, USA
Registered: Apr 2015

posted July 14, 2017 04:35 PM

Thanks Bill

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