I'm very new to OBS and right now most of it's capabilities go way above my head. I've searched thru the forums but haven't found an answer. What I want to do is simple. (Except for me). I have some hvec 265 and 264 15 sec clips recorded by an ipcamera. I want to load the videos (one at the time) in VLC, full screen and then have OBS record the VLC screen only while the video is playing. I'm at this point not interested in sound. Right now when I try to do that the OBS app partially fills the screen. Any help will be appreciated.