At the point indicated by the playhead, if a video is present, you have two options:
If the video is a complete scene, a button will pause the video at that location and create a floating element with the same video starting from that point. Both video elements are synchronized, and there will be no interruption.
Another button allows you to reverse this action and reintegrate the video as the background of the scene.
This lets you transition a video from full screen to a corner of the screen while presenting something else in the background of the scene. It's useful for a presentation where you switch from a video showing the speaker to an image illustrating the speech.