Method, device, and computer program for improving the description of sample attributes of encapsulated media data

Abstract

Improved exchange of encapsulated media data 800, 900 in a media file. Encapsulating (Fig. 8) comprising: generating track 805 comprising sequence of samples based on media data; generating descriptive metadata 810 for reconstructing list of references for samples of sequence of samples, each reference comprising sample identifier code and list of attributes; generating media file 845 comprising generated track and descriptive metadata; wherein descriptive metadata comprises: first indication indicating relative position of reference relative to given sample; and second indication indicating number of samples following reference in sequence of samples, list of references comprising repetition of set of references comprising reference referred to by relative position and following samples. Parsing (Fig. 9) comprising: obtaining track 900 comprising sequence of samples based on media data; obtaining descriptive metadata 905 for reconstructing 910 list of references for samples of sequence of samples, each reference comprising sample identifier code and list of attributes; wherein descriptive metadata comprises: first indication indicating relative position of reference relative to given sample; and second indication indicating number of samples following reference in sequence of samples, list of references comprising repetition of set of references comprising reference referred to by relative position and following samples. [Fig. 8 & 9]