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zooming into 1080/60i, avoiding interlacing problems

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Jason O'Hara
zooming into 1080/60i, avoiding interlacing problems
on Jan 20, 2010 at 6:39:20 pm

I have some clips that I need to zoom into on the timeline (camera operator was using an oversized windscreen that pokes into upper-right corner of the frame). When I resize arbitrarily in the timeline, I immediately start seeing interlace artifacts and flickering. I expect these can be eliminated with the de-interlace filter but wonder if this is my best option vs. picking better resize factor than my arbitrary 108.87%, any advice is much appreciated, Thanks


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David Roth Weiss
Re: zooming into 1080/60i, avoiding interlacing problems
on Jan 20, 2010 at 8:01:51 pm

[Jason O'Hara] "When I resize arbitrarily in the timeline, I immediately start seeing interlace artifacts and flickering. I expect these can be eliminated with the de-interlace filter but wonder if this is my best option vs. picking better resize factor than my arbitrary 108.87%, any advice is much appreciated,"

First, it's obvious you monitoring with only a computer monitor -- so it's only natural that you'd see the interlace. This is why pros use I/O cards to display to true video monitors. So, don't deinterlace unless you want to lose 50% of your resolution -- the interlace will go away when you playback on a DVD or proper monitor.

Probably best to use an even whole number so that scan lines fall into their proper place.

David Roth Weiss
Director/Editor/Colorist
David Weiss Productions, Inc.
Los Angeles

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