Hey guys, total newbie here.
I'm experiencing some difficulties with how to blend two clips with the same background into one - for example, filming myself with a steady camera on two positions in front of the same wall. I want to merge them so I will look like I have a clone of myself (hope this explains it better

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I tried with Fusion of both clips and changing the blend mode to multiply, but I always end up with a dark video, and when I try to brighten it, the subject starts to become transparent.
Any help would be appreciated!