MEDIA ENCAPSULATING AND DECAPSULATING

摘要

There are disclosed various methods, apparatuses and computer program products for media encapsulating and decapsulating. A container file according to a first format is obtained or generated including or referring to at least two media data units and to an obtained or generated metadata item according to a second format, the metadata item being valid for one or more media data units; and scope information is included in the container file indicating said one or more of said at least two media data units. There is also disclosed a method comprising receiving the container file; receiving the metadata item; and parsing from the container file the scope information; selecting one or more of said at least two media data units on the basis of the scope information; and determining the validity of the metadata item for said one or more of said at least two media data units.