Abstract: In some examples, a computer device uses an input video stream to generate an output video stream for presentation to a first user. The output video stream corresponds to a three-dimensional space as seen from a viewing direction specified by a particular user among a set of users including at least the first user and a second user. In response to a request from the first user to follow a perspective of the second user, the computer device determines whether a cyclic dependency would be formed, then updates the output video stream accordingly. If a cyclic dependency would be formed, the computer device maintains the viewing direction of the particular user. If no cyclic dependency would be formed, the computer device switches to generating the output video stream based on a viewing direction associated with the second user.

Abstract: In some examples, a computer device uses an input video stream to generate an output video stream for presentation to a first user. The output video stream corresponds to a three-dimensional space as seen from a viewing direction specified by a particular user among a set of users including at least the first user and a second user. In response to a request from the first user to follow a perspective of the second user, the computer device determines whether a cyclic dependency would be formed, then updates the output video stream accordingly. If a cyclic dependency would be formed, the computer device maintains the viewing direction of the particular user. If no cyclic dependency would be formed, the computer device switches to generating the output video stream based on a viewing direction associated with the second user.

Abstract: Described are techniques for shared viewing of video among remote users, including methods and corresponding systems and apparatuses. A first computer device operated by a first user can receive an input video stream representing a three-dimensional (3D) space. From the input video stream, an output video stream corresponding to the 3D space as seen from a viewing direction specified by the first user is generated. The output video stream includes images that cover a narrower field of view compared to the input video stream. The first computer device can receive information indicating a viewing direction specified by a second user, who is a user of a second computer device. The first computer device can update the output video stream based on the information indicating the viewing direction specified by the second user. The updated output video stream can then be presented on a display of the first user.

Abstract: Described are techniques for shared viewing of video among remote users, including methods and corresponding systems and apparatuses. A first computer device operated by a first user can receive an input video stream representing a three-dimensional (3D) space. From the input video stream, an output video stream corresponding to the 3D space as seen from a viewing direction specified by the first user is generated. The output video stream includes images that cover a narrower field of view compared to the input video stream. The first computer device can receive information indicating a viewing direction specified by a second user, who is a user of a second computer device. The first computer device can update the output video stream based on the information indicating the viewing direction specified by the second user. The updated output video stream can then be presented on a display of the first user.