I downloaded OBS, then configured what I think is correct, all I want to do is record videos that I find online. But, what I need to do is watch the video so I can edit out portions I don't want. All I can see is a black box, no video is playing. Here is a screenshot of what I see. In another tab I have the video playing that I want to record. The audio functions are fine, but I can't see anything! Help!