Apparatus, a method and a computer program for omnidirectional video

An apparatus comprising at least one processor and at least one non-transitory memory, said at least one memory stored with code thereon, which when executed by said at least one processor, causes the apparatus to perform at least:

• receive a bitstream comprising a coded first-view picture and a coded second-view picture, wherein the coded first-view picture and the coded second-view picture form a partially stereoscopic content, wherein the partially stereoscopic content comprises a stereoscopic region and a monoscopic region, and wherein the coded second-view picture represents a smaller field of view than the coded first-view picture;
• decode the coded first-view picture, wherein the decoding results into a decoded first-view picture;
• decode the coded second-view picture, wherein the decoding results into a decoded second-view picture;
• decode from or along a bitstream that a reconstructed second-view picture comprises the decoded second-view picture and at least one region of the decoded first-view picture, wherein the reconstructed second-view picture represents the same field of view as the decoded first-view picture, and
• reconstruct the reconstructed second-view picture accordingly.

A method, comprising:

• encoding or encapsulating a bitstream comprising a coded first-view picture and a coded second-view picture, wherein
• the coded first-view picture and the coded second-view picture form a partially stereoscopic content, wherein the partially stereoscopic content comprises a stereoscopic region and a monoscopic region,
• the coded second-view picture represents a smaller field of view than the coded first-view picture,
• decoding of the coded first-view picture results in a decoded first-view picture,
• decoding of the coded second-view picture results in a decoded second-view picture;
• and
• indicating in or along the bitstream that a reconstructed second-view picture comprises the decoded second-view picture and at least one region of the decoded first-view picture, wherein the reconstructed second-view picture represents the same field of view as the decoded first-view picture.

A method, comprising:

• receiving a bitstream comprising a coded first-view picture and a coded second-view picture, wherein the coded first-view picture and the coded second-view picture form a partially stereoscopic content, wherein the partially stereoscopic content comprises a stereoscopic region and a monoscopic region, and wherein the coded second-view picture represents a smaller field of view than the coded first-view picture,
• decoding the coded first-view picture, wherein the decoding results into a decoded first-view picture,
• decoding the coded second-view picture, wherein the decoding results into a decoded second-view picture,
• decoding from or along a bitstream that a reconstructed second-view picture comprises the decoded second-view picture and at least one region of the decoded first-view picture, wherein the reconstructed second-view picture represents the same field of view as the decoded first-view picture, and
• reconstructing the reconstructed second-view picture accordingly.

A computer readable non-transitory storage medium comprising code for use by an apparatus, which when executed by a processor, causes the apparatus to perform at least:

• obtain a first coded tile or sub-picture track and a second coded tile or sub-picture track, the first and second coded tile or sub-picture tracks representing a different spatial part of an input video sequence, and the first and second coded tile or sub-picture tracks having the same width and height in pixels;
• encode or encapsulate a bitstream comprising a coded first-view picture and a coded second-view picture, wherein
• the coded first-view picture and the coded second-view picture form a partially stereoscopic content, wherein the partially stereoscopic content comprises a stereoscopic region and a monoscopic region,
• the coded second-view picture represents a smaller field of view than the coded first-view picture,
• decoding of the coded first-view picture results in a decoded first-view picture,
• decoding of the coded second-view picture results in a decoded second-view picture, and
• indicate in or along the bitstream that a reconstructed second-view picture comprises the decoded second-view picture and at least one region of the decoded first-view picture, wherein the reconstructed second-view picture represents the same field of view as the decoded first-view picture.

A computer readable non-transitory storage medium comprising code for use by an apparatus, which when executed by a processor, causes the apparatus to perform at least:

• receive a bitstream comprising a coded first-view picture and a coded second-view picture, wherein the coded first-view picture and the coded second-view picture form a partially stereoscopic content, wherein the partially stereoscopic content comprises a stereoscopic region and a monoscopic region, and wherein the coded second-view picture represents a smaller field of view than the coded first-view picture,
• decode the coded first-view picture, wherein the decoding results into a decoded first-view picture,
• decode the coded second-view picture, wherein the decoding results into a decoded second-view picture,
• decode from or along a bitstream that a reconstructed second-view picture comprises the decoded second-view picture and at least one region of the decoded first-view picture, wherein the reconstructed second-view picture represents the same field of view as the decoded first-view picture, and
• reconstruct the reconstructed second-view picture accordingly.