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From MiVideo T3 User February 21st, 2020
Kaltura Capture supports up to two recording inputs, plus audio. How to select recording inputs. Two input recordings, such as a screen plus webcam will be presented to the viewers in a configurable PiP (picture in picture) view.
From kalturalearning
For detailed instructions see Upload Media Using Kaltura Capture: Screen, Camera, and Audio Recording.