Abstract: Various exemplary embodiments relate to a method and related devices including one or more of the following: displaying, on a display of the authoring device, a first representation of a first environment, wherein the first environment represents an anatomical structure; receiving, via a user input interface of the authoring device, a first user input representing a request to initiate a portal; in response to receiving the first user input, displaying, on the output device a first compound representation comprising: the first representation of the first environment, a portal frame, and a second representation of a second environment, wherein the second environment represents the anatomical structure and is located within the portal frame; and generating a video file, wherein the video file enables playback of the first compound representation.