Method, device, and computer program for transmitting media content

Abstract

A method for encapsulating encoded timed media data into at least a first and a second track belonging to one same group of tracks, said media data corresponding to one or more video sequences made up of full frames. The method includes for at least first or second track providing descriptive information about the spatial relationship of a first spatial part of one frame encapsulated in the first track. A second spatial part of said frame encapsulated in the second track, wherein said descriptive information, shared by the tracks belonging to a same group of tracks, indicates whether the region, covered by both the first and the second spatial parts, forms a full frame or not.

1 . A method for encapsulating encoded timed media data into a plurality of tracks forming one same group of tracks, said media data corresponding to one or more video sequences,
 the method comprising for the plurality of tracks forming the group of tracks;   providing descriptive information about the spatial relationship of spatial parts of frames encapsulated in the plurality of tracks, wherein said descriptive information indicates whether the region, covered by the spatial parts of frames encapsulated in the plurality of tracks, forms an entire sphere or not.   
     
     
         2 . The method of  claim 1 , wherein said descriptive information is provided in a same data structure comprising descriptive information shared by the plurality of tracks. 
     
     
         3 . The method of  claim 2 , wherein the data structure is a TrackGroupTypeBox. 
     
     
         4 . The method of  claim 1 , wherein said descriptive information comprises coverage information of the region covered by the spatial parts of frames encapsulated in the plurality of tracks, when the region covered by the spatial parts is not the entire sphere. 
     
     
         5 . The method of  claim 4 , wherein said descriptive information is not comprising the coverage information of the region covered by the spatial parts of frames encapsulated in the plurality of tracks, when the region covered by the spatial parts is the entire sphere. 
     
     
         6 . A method for generating a media file comprising
 capturing one or more video sequences,   encoding media data corresponding to the one or more video sequences,   encapsulating the encoded media data into a plurality of tracks forming one same group of tracks according to the encapsulating method of  claim 1 , and   generating at least one media file comprising said plurality of tracks.   
     
     
         7 . A method for obtaining at least one frame from a media file comprising encoded timed media data encapsulated into a plurality of tracks forming one same group of tracks, said media data corresponding to one or more video sequences, the method comprising:
 parsing information associated with the plurality of tracks forming the group of tracks,   wherein the parsed information comprises descriptive information about the spatial relationship of spatial parts of frames encapsulated in the plurality of tracks, said descriptive information indicating whether the region covered by the spatial part encapsulated in the plurality of tracks forms an entire sphere or not.   
     
     
         8 . A computing device for encapsulating encoded timed media data into a plurality of tracks forming one same group of tracks, said media data corresponding to one or more video sequences,
 the computing device being configured for the plurality of tracks forming the group of tracks for:   providing descriptive information about the spatial relationship of spatial parts of frames encapsulated in the plurality of tracks, wherein said descriptive information indicates whether the region, covered by the spatial parts of frames encapsulated in the plurality of tracks, forms an entire sphere or not.   
     
     
         9 . A computing device for obtaining at least one frame from a media file comprising encoded timed media data encapsulated into a plurality of tracks forming one same group of tracks, said media data corresponding to one or more video sequences,
 the computing device being configured for:   parsing information associated with the plurality of tracks forming the group of tracks,   wherein the parsed information comprises descriptive information about the spatial relationship of spatial parts of frames encapsulated in the plurality of tracks, said descriptive information indicating whether the region covered by the spatial parts plurality of tracks encapsulated in the plurality of tracks forms an entire sphere or not.   
     
     
         10 . A computer-readable storage medium storing instructions of a computer program for implementing a method according to  claim 1 .