Method, device, and computer program for encapsulating and parsing timed media data

A method for generating one or more media files based on video data, the method comprising:

• obtaining the video data;
• generating a plurality of tile tracks each containing video data of at least one tile region;
• generating a TileRegionGroupEntry to be used to describe a tile region of the video data and including a descriptor, which, when set to 1, indicates that a dependency list is present in said TileRegionGroupEntry, and when set to 0, indicates that the dependency list is not present in said TileRegionGroupEntry, wherein the dependency list includes ‘dependency_tile_count’ which indicates a number of tile regions in the dependency list and DependencyTileGroupId that gives a group identifier of a tile region that the tile region depends on;
• and
• generating the one or more media files based on the plurality of tile tracks and said TileRegionGroupEntry.

A device for generating one or more media files based on video data, the method comprising:

• a hardware processor;
• and
• a memory storing one or more programs configured to be executed by the hardware processor, the one or more programs including instructions for:
• obtaining the video data;
• generating a plurality of tile tracks each contains video data of at least one tile region;
• generating a TileRegionGroupEntry to be used to describe a tile region of the video data and including a descriptor, when set to 1, indicates that a dependency list is present in said TileRegionGroupEntry, and when set to 0, indicates that the dependency list is not present in said TileRegionGroupEntry, wherein the dependency list includes ‘dependency_tile_count’ indicates a number of tile regions in the dependency list and DependencyTileGroupId that gives a group identifier of a tile region that the tile region depends on;
• and
• generating the one or more media files based on the plurality of tile tracks and said TileRegionGroupEntry.

A device for processing one or more media files based on video data, the method comprising:

• a hardware processor;
• and
• a memory storing one or more programs configured to be executed by the hardware processor, the one or more programs including instructions for:
• receiving the one or more media files comprising (i) a plurality of tile tracks each contains video data of at least one tile region and (ii) a TileRegionGroupEntry to be used to describe a tile region of the video data, wherein the TileRegionGroupEntry includes a descriptor, when set to 1, indicates that a dependency list is present in said TileRegionGroupEntry, and when set to 0, indicates that the dependency list is not present in said TileRegionGroupEntry, and wherein the dependency list includes ‘dependency_tile_count’ indicates a number of tile regions in the dependency list and DependencyTileGroupId that gives a group identifier of a tile region that the tile region depends on;
• and
• representing video data of one or more tile regions by referring said TileRegionGroupEntry.

A non-transitory computer-readable storage medium storing a program for causing a computer to execute a method comprising:

• obtaining video data;
• generating a plurality of tile tracks each contains video data of at least one tile region;
• generating a TileRegionGroupEntry to be used to describe a tile region of the video data and including a descriptor, when set to 1, indicates that a dependency list is present in said TileRegionGroupEntry, and when set to 0, indicates that the dependency list is not present in said TileRegionGroupEntry, wherein the dependency list includes ‘dependency_tile_count’ indicates a number of tile regions in the dependency list and DependencyTileGroupId that gives a group identifier of a tile region that the tile region depends on;
• and
• generating the one or more media files based on the plurality of tile tracks and said TileRegionGroupEntry.