Apologies - newbie. I have 25.0.3 obs Studio running on ubuntu and have spent hours trying to work out (if?) how to select a specific area of the screen to record. If I am playing a video via my browser I'm trying to find out how to select a specific area of the screen to capture. I keep reading about using the Alt key but there is no detail on how to actually narrow down to the area you want. I get the impression obs is more suited to whole desktop streaming rather than used as a simple screen capture tool - but then I guess I don't know enough. Any help/suggestions would most appreciated.