Charlie Yang
February 17th, 2009, 01:33 PM
Hello,
I was shooting a conversation scene of two people in front a green backdrop. in the editing stage, i tried to impose this scene over a second clip of dark night scene (with moon hanging in the sky).
on the first clip, i keyed out the green by using "green screen keying" clip effect in AL7. it works fine. however, after i shrunk this clip to 50% of its original size (by using "CPU 2D editor" clip effect), the border line of the shunken clip (rectangle box border) became very obvious. i tried to use "blur CPU -> alpha channel" effect to get rid of this border but to no avail. since it only blurs the contour line of the subject (two humans in this case) but not the rectangle box border line.
any insight on how to eliminate (or blur) this border is greatly appreciated. or in general, how to shink a keyed clip without an annoying visible border line of the first clip? Thanks.
Charlie
I was shooting a conversation scene of two people in front a green backdrop. in the editing stage, i tried to impose this scene over a second clip of dark night scene (with moon hanging in the sky).
on the first clip, i keyed out the green by using "green screen keying" clip effect in AL7. it works fine. however, after i shrunk this clip to 50% of its original size (by using "CPU 2D editor" clip effect), the border line of the shunken clip (rectangle box border) became very obvious. i tried to use "blur CPU -> alpha channel" effect to get rid of this border but to no avail. since it only blurs the contour line of the subject (two humans in this case) but not the rectangle box border line.
any insight on how to eliminate (or blur) this border is greatly appreciated. or in general, how to shink a keyed clip without an annoying visible border line of the first clip? Thanks.
Charlie