Viewport Dependent Delivery Methods For Omnidirectional Conversational Video

An apparatus comprising:

• at least one processor;
• and
• at least one non-transitory memory and computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus to:
• receive an omnidirectional video;
• generate a first version of the omnidirectional video with a first resolution;
• generate a second version of the omnidirectional video with a second resolution, wherein the first version has a higher quality than the second version;
• receive viewport information from a user equipment, where the viewport information comprises, at least, a size of the viewport and an orientation of the viewport;
• project a picture of the first version of the omnidirectional video;
• determine a region of the projected picture that corresponds to the received viewport information;
• rotate the projected picture to reorient the determined region of the projected picture to a center of the projected picture;
• encode information, where the information comprises:
• a packed picture comprising:
• the region of the rotated projected picture of the first version of the omnidirectional video, and
• the second version of the omnidirectional video,
• an indication of rotation information corresponding to the rotating of the projected picture of the first version of the omnidirectional video, and
• packing information corresponding to the second version of the omnidirectional video;
• packetize the encoded information;
• and
• transmit, to the user equipment, the packetized information.

A non-transitory computer-readable medium comprising program instructions stored thereon which, when executed with at least one processor, cause the at least one processor to:

• receive an omnidirectional video;
• generate a first version of the omnidirectional video with a first resolution;
• generate a second version of the omnidirectional video with a second resolution, wherein the first version has a higher quality than the second version;
• receive viewport information from a user equipment, where the viewport information comprises, at least, a size of the viewport and an orientation of the viewport;
• project a picture of the first version of the omnidirectional video;
• determine a region of the projected picture that corresponds to the received viewport information;
• rotate the projected picture to reorient the determined region of the projected picture to a center of the projected picture;
• encode information, where the information comprises:
• a packed picture comprising:
• the region of the rotated projected picture of the first version of the omnidirectional video, and
• the second version of the omnidirectional video,
• an indication of rotation information corresponding to the rotating of the projected picture of the first version of the omnidirectional video, and
• packing information corresponding to the second version of the omnidirectional video;
• packetize the encoded information;
• and
• transmit, to the user equipment, the packetized information.

An apparatus comprising:

• at least one processor;
• and
• at least one non-transitory memory and computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus to:
• receive an omnidirectional video;
• determine a viewport of a user equipment;
• determine a delivery mode;
• determine a region of the omnidirectional video based, at least partially, on the determined viewport and the determined delivery mode;
• encode information, where the information comprises:
• first content having a first resolution, wherein the first content comprises content associated with the determined region, and
• second content having a second resolution, wherein the second content comprises content associated with the omnidirectional video, wherein the first content has a higher quality than the second content,
• wherein the information further comprises at least one of:
• rotation information corresponding to the first content, or
• packing information;
• and
• transmit the encoded information to the user equipment based, at least partially, on the determined delivery mode.