FIELD: physics, computer engineering.
SUBSTANCE: invention relates to means of creating and using multimedia container files. The method includes providing, in a multimedia container file, support information which identifies, for each sub-track from a plurality of sub-tracks defined in a multimedia track, a portion of multimedia data belonging to said sub-track. The method also includes providing, in said multimedia container file and at least for one sub-track from said plurality of sub-tracks, selection information which defines selection processing of a portion of multimedia data defined by said at least one sub-track relative to other multimedia data, organised in said multimedia container file and relating to the same content as said portion of multimedia data, defined by said at least one sub-track. The selection information is used by a media server during a multimedia session for selecting at least one sub-track and a portion of multimedia data used at the beginning of the multimedia session, or a portion of multimedia data switched during the multimedia session.
EFFECT: facilitating switching of sub-tracks during a multimedia session.
26 cl, 13 dwg
