Kap plugin - Show a camera while recording
In the Kap menu, go to Preferences…, select the Plugins pane, find this plugin, and toggle it.
In the cropper or by right-clicking the tray icon, click the … icon, then Plugins and make sure Show Camera is enabled.
The plugin creates a window showing the selected camera on the bottom-left corner of the recording. The window is click-through and its hover opacity and size can be adjusted.
To move the window, hold Command before you hover over it, then click and drag it anywhere on the screen