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Crop edge line
I’m chroma keying a clip in FCP 5.1.4. Since I have a slightly different key setting on the lower part of the clip, I duplicated the clip on another track and cropped both clips so the different key setting appears only in the lower part of the clip. At the boundary of the cropped edges from both clips, I’m getting a thin black line. I’ve tried adjusting the cropping of both clips so they overlap slightly and I’ve also adjusted the edge feathering in the crops but I still get the black line. I’ve even tried adjusting some of the chroma keyer controls to see if that was affecting it, but it doesn’t seem to fix it. I’m working with DV footage and actually have a decent key on both layers. The only problem is the thin black line that appears when I render. Any ideas?
Doug Olin
Desert Vistas Multimedia -
2 Replies
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I’m assuming you’ve tried all the key effects in the effects menu. I don’t know if this will work but here’s the first thing I would try.
Create a matte and color it with either the top or bottom color of your clip’s chroma info. Next, place it on top of the two clips and crop it to just beyond the black line. Now, use a chroma key effect on it (or a compoosite mode) and see if that takes it away.
Again, that’s not a proven trick, just something I would think to try. If nothing else, it keeps you from wasting your time on YouTube while waiting for a solution.
Also, try seeing if a composite mode on the original clip won’t work.Hope that helps,
Bugsy
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I figured out that the clips with drop shadow applied were showing the ugly black line on the crop. Turn off the drop shadow and the line goes away. It shouldn’t happen but it does.
Doug Olin
Desert Vistas Multimedia
http://www.desertvistasmm.com
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