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

A device for encapsulating tiled timed media data, the tiled timed media data comprising frames, each frame being composed of a plurality of tiles, the device being configured for:

• obtaining a rectangular region comprising at least one tile from amongst the plurality of tiles in a first frame;
• generating a tile track comprising samples related to the obtained rectangular region;
• encapsulating the generated tile track in a media file;
• generating and encapsulating in the media file a base track comprising a reference to the generated tile track;
• wherein the base track comprises descriptive data for describing ISO base media file format, ISOBMFF, characteristics common to some of the samples within a tile track, wherein the descriptive data includes a data structure for identifying synchronization samples.

A non-transitory computer-readable storage medium storing a program for causing a computer to execute a method for encapsulating tiled timed media data, the tiled timed media data comprising frames, each frame being composed of a plurality of tiles, the method comprising:

• obtaining a rectangular region comprising at least one tile from amongst the plurality of tiles in a first frame;
• generating a tile track comprising samples related to the obtained rectangular region;
• encapsulating the generated tile track in a media file;
• generating and encapsulating in the media file a base track comprising a reference to the generated tile track;
• wherein the base track comprises descriptive data for describing ISO base media file format, ISOBMFF, characteristics common to some of the samples within a tile track, wherein the descriptive data includes a data structure for identifying synchronization samples.

A device for processing a media file, the device 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 a media file comprising a tile track and a base track, wherein the tile track comprises samples related to a rectangular region comprising at least one tile from amongst a plurality of tiles in a first frame, and wherein the base track comprises a reference to the tile track and comprises descriptive data for describing ISO base media file format, ISOBMFF, characteristics common to some of the samples within a tile track, wherein the descriptive data includes a data structure for identifying synchronization samples;
• and
• representing the tiled timed media data.