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

This is topic Can re-sizing and cropping a clip cause 'jerkiness' ? in forum 8mm Forum at 8mm Forum.

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Posted by Bill Vendasi (Member # 4815) on 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.

Posted by Adrian Winchester (Member # 248) on 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.

Posted by Stuart Reid (Member # 1460) on 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.

Posted by Bill Vendasi (Member # 4815) on 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.

Posted by Bill Brandenstein (Member # 892) on 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.

Posted by Bill Vendasi (Member # 4815) on July 14, 2017, 04:35 PM:

Thanks Bill

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