Picture-in-picture (camera bubble)

Picture-in-picture places a small camera view over a screen recording, usually as a circle or rounded rectangle in a corner. In video messaging it is often called a camera bubble, and it is the layout most work recordings should use.

The reason is attention rather than aesthetics. A screen recording with a disembodied voice is easy to half-watch; a face in the corner makes the recording feel addressed to someone, which measurably changes how much of it people finish. It also carries the signals a voice alone cannot — whether the sender is confident about what they are showing, whether a caveat is a real concern or a formality.

Placement matters more than most people expect. The bubble should sit in the corner with the least information, which on most interfaces is the bottom left or bottom right, and it should stay there rather than moving around. A bubble that covers a menu at the moment you refer to that menu is worse than no camera at all.

The alternative layouts are a split view, where the screen and the camera share the frame equally, and camera-only, which is a talking-head recording with no screen. Split view suits presentations where the speaker matters as much as the material; camera-only suits introductions, feedback and anything where there is nothing to show.

Knowing when to leave the camera off is part of using it well. A precise technical walkthrough, a long reference recording, or anything a viewer will scrub through does not benefit from a face in the corner, and the bubble becomes one more thing occluding the screen. The camera earns its place when the recording is addressed to a person, and stops earning it when the recording is documentation.