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Why am I getting these artifacts in a screen replacement?
I’m doing a screen replacement in a static shot by simply superimposing (on a higher layer) a JPEG of the screen I want over the screen in the shot. In the attached screencap, the upper photo shows what I see while positioning the JPEG. The lower photo shows what’s displayed during playback. The problem is those black artifacts across the white lines, kind of moireish. What’s more, I’ll get the artifacts if I scrub through the clip a frame at a time, but they’ll disappear if I stop on a frame for more than a couple of seconds. Any ideas about what’s causing them and how to eliminate them greatly appreciated.