Cilent-Based Adaptive Streaming of Nonlinear Media

A client apparatus comprising:

• a computer readable storage medium having computer readable program code embodied therewith, and a processor coupled to the computer readable storage medium, wherein responsive to executing the computer readable program code, the processor is configured to cause the client apparatus to perform executable operations comprising:
• receiving a first manifest file comprising metadata defining one or more playback periods, a playback period defining video data of a predetermined playback duration, a playback period including at least one adaptation set defining a plurality of representations, each representation defining a set of segment identifiers, each segment identifier identifying a segment comprising video data, the video data including a sequence of video frames;
• the metadata further comprising spatial playback information including at least a first region descriptor associated with a first adaptation set of a first playback period, the first region descriptor defining a destination identifier and a first region in video frames of the first adaptation set, the destination identifier signaling the client apparatus that the first region is linked to a second adaptation set, the second adaptation set being associated with a second region descriptor, the second region descriptor including a source identifier that matches the destination identifier;
• using the metadata to playback video data of the first adaptation set by requesting one or more network nodes to transmit segments of the first adaptation set, and by receiving or determining, during playback of requested segments, at least a second region in the video frames of the first adaptation set, the second region defining a region of interest (ROI) of a user of the client apparatus;
• and
• selecting the second adaptation set for playback after the end of the playback of the first adaptation set on the basis of the first and second region, the selecting being based on a distance or an overlap between the first and second region.

A non-transitory computer-readable storage medium having stored thereon computer-readable instructions that, when executed by a processor of a client apparatus, cause the client apparatus to carry out operations comprising:

• receiving a first manifest file comprising metadata defining one or more playback periods, a playback period defining video data of a predetermined playback duration, a playback period including at least one adaptation set defining a plurality of representations, each representation defining a set of segment identifiers, each segment identifier identifying a segment comprising video data, the video data including a sequence of video frames;
• the metadata further comprising spatial playback information including at least a first region descriptor associated with a first adaptation set of a first playback period, the first region descriptor defining a destination identifier and a first region in video frames of the first adaptation set, the destination identifier signaling the client apparatus that the first region is linked to a second adaptation set, the second adaptation set being associated with a second region descriptor, the second region descriptor including a source identifier that matches the destination identifier;
• using the metadata to playback video data of the first adaptation set by requesting one or more network nodes to transmit segments of the first adaptation set, and by receiving or determining, during playback of requested segments, at least a second region in the video frames of the first adaptation set, the second region defining a region of interest (ROI) of a user of the client apparatus;
• and
• selecting the second adaptation set for playback after the end of the playback of the first adaptation set on the basis of the first and second region, the selecting being based on a distance or an overlap between the first and second region.