VideoComposeMessage Field Type Repeated Description message oneOf ⮑subscription Subscription ⮑initial_config VideoComposeConfiguration ⮑update_config VideoComposeUpdateConfiguration Argument of Method Description CreateTransformVideoCompose Create a Media Node composing multiple sources into one, eg to construct overlays, picture-in-picture or split-screen video. Individual sources may be cropped or scaled as part of this process VideoComposeConfiguration VideoComposeSourceEvent