Advanced video data stream extraction and multi-resolution video transmission

An apparatus for generating a video data stream configured to

• provide the video data stream with a sequence of slice portions, each slice portion having encoded thereinto a respective slice of a plurality of slices of a picture of a video, wherein each slice portion comprises a slice address indicating a location where, in a picture area of the video, the slice which the respective slice portion has encoded thereinto is located;
• provide the video data stream with extraction information indicating how to extract from the video data stream a reduced video data stream having encoded thereinto a spatially smaller video corresponding to a spatial section of the video by confining the video data stream to slice portions having encoded thereinto any slice within the spatial section and amending the slice address so as to relate to a decreased picture area of the spatially smaller video, the extraction information comprising
• a first information defining the spatial section within the picture area within which the video is encoded into the video data stream independent from outside the spatial section, wherein none of the plurality of slices crosses borders of the spatial section;
• and
• a second information explicitly signaling, as to how to amend the slice address of the slice portion of each slice within the spatial section so as to indicate, within the reduced video data stream, the location where, in the decreased picture area, the respective slice is located.

An apparatus for extracting from a video data stream having encoded thereinto the video a reduced video data stream having encoded thereinto a spatially smaller video, the video data stream comprising a sequence of slice portions, each slice portion having encoded thereinto a respective slice of a plurality of slices of a picture of a video, wherein each slice portion comprises a slice address indicating a location where, in a picture area of the video, the slice which the respective slice portion has encoded thereinto is located, wherein the apparatus is configured to

• read extraction information from the video data stream,
• derive from the extraction information a spatial section within the picture area, wherein none of the plurality of slices crosses borders of the spatial section, and wherein the reduced video data stream is confined to slice portions having encoded thereinto any slice within the spatial section,
• amend the slice address of the slice portion of each slice within the spatial section using
• an explicit signaling of
• the extraction information, so as to which indicates, within the reduced video data stream, the location where, in a decreased picture area of the spatially smaller video, the respective slice is located.

A method for generating a video data stream comprising

• provide the video data stream with a sequence of slice portions, each slice portion having encoded thereinto a respective slice of a plurality of slices of a picture of a video, wherein each slice portion comprises a slice address indicating a location where, in a picture area of the video, the slice which the respective slice portion has encoded thereinto is located;
• provide the video data stream with extraction information indicating how to extract from the video data stream a reduced video data stream having encoded thereinto a spatially smaller video corresponding to a spatial section of the video by confining the video data stream to slice portions having encoded thereinto any slice within the spatial section and amending the slice address so as to relate to a decreased picture area of the spatially smaller video, the extraction information comprising
• a first information defining the spatial section within the picture area within which the video is encoded into the video data stream independent from outside the spatial section, wherein none of the plurality of slices crosses borders of the spatial section;
• and
• a second information explicitly signaling, as to how to amend the slice address of the slice portion of each slice within the spatial section so as to indicate, within the reduced video data stream, the location where, in the decreased picture area, the respective slice is located.

A method for extracting from a video data stream having encoded thereinto the video a reduced video data stream having encoded thereinto a spatially smaller video, the video data stream comprising a sequence of slice portions, each slice portion having encoded thereinto a respective slice of a plurality of slices of a picture of a video, wherein each slice portion comprises a slice address indicating a location where, in a picture area of the video, the slice which the respective slice portion has encoded thereinto is located, wherein the method comprises

• read extraction information from the video data stream,
• derive from the extraction information a spatial section within the picture area, wherein none of the plurality of slices crosses borders of the spatial section, and wherein the reduced video data stream is confined to slice portions having encoded thereinto any slice within the spatial section,
• amend the slice address of the slice portion of each slice within the spatial section using
• an explicit signaling of
• the extraction information, which indicates, within the reduced video data stream, the location where, in a decreased picture area of the spatially smaller video, the respective slice is located.

A non-transitory digital storage medium having a computer program stored thereon to perform the method for generating a video data stream comprising

• provide the video data stream with a sequence of slice portions, each slice portion having encoded thereinto a respective slice of a plurality of slices of a picture of a video, wherein each slice portion comprises a slice address indicating a location where, in a picture area of the video, the slice which the respective slice portion has encoded thereinto is located;
• provide the video data stream with extraction information indicating how to extract from the video data stream a reduced video data stream having encoded thereinto a spatially smaller video corresponding to a spatial section of the video by confining the video data stream to slice portions having encoded thereinto any slice within the spatial section and amending the slice address so as to relate to a decreased picture area of the spatially smaller video, the extraction information comprising
• a first information defining the spatial section within the picture area within which the video is encoded into the video data stream independent from outside the spatial section, wherein none of the plurality of slices crosses borders of the spatial section;
• and
• a second information explicitly signaling, as to how to amend the slice address of the slice portion of each slice within the spatial section so as to indicate, within the reduced video data stream, the location where, in the decreased picture area, the respective slice is located,
• when said computer program is run by a computer.

A non-transitory digital storage medium having a computer program stored thereon to perform the method for extracting from a video data stream having encoded thereinto the video a reduced video data stream having encoded thereinto a spatially smaller video, the video data stream comprising a sequence of slice portions, each slice portion having encoded thereinto a respective slice of a plurality of slices of a picture of a video, wherein each slice portion comprises a slice address indicating a location where, in a picture area of the video, the slice which the respective slice portion has encoded thereinto is located, wherein the method comprises

• read extraction information from the video data stream,
• derive from the extraction information a spatial section within the picture area, wherein none of the plurality of slices crosses borders of the spatial section, and wherein the reduced video data stream is confined to slice portions having encoded thereinto any slice within the spatial section,
• amend the slice address of the slice portion of each slice within the spatial section using
• an explicit signaling of
• the extraction information which indicates, within the reduced video data stream, the location where, in a decreased picture area of the spatially smaller video, the respective slice is located,
• when said computer program is run by a computer.