7 Metadata

26.1183GPPRelease 17TSVirtual Reality (VR) profiles for streaming applications

7.1 Presentation without Pose Information to 2D Screens

In several devices, the VR sensor providing pose information may not be available or may be disabled by the user and the presentation of the VR360 presentation is on a 2D screen. In this case, the receiver needs to rely on other information to determine a proper rendering of the VR360 presentation that is to be presented at a specific media time.

For this purpose, a VR Media Presentation may include the recommended viewport metadata. The recommended viewport metadata may be encapsulated in a timed metadata track in either a file or a DASH representation.

Receivers presenting on a 2D screen and not implementing a viewport sensor should implement the recommended viewport processing to process the recommended viewport metadata and to render VR video or audio accordingly.

Receivers implementing a viewport sensor may implement the recommended viewport processing.

If the viewport sensor is not implemented at the receiver, or if the viewport sensor is disabled (permanently or temporarily), the receiver should process the recommended viewport metadata, if present.

If the viewport metadata is provided in the VR Media Presentation and if processing is supported and applied, then the Receiver shall render the viewport indicated metadata.