| 摘要 |
Multi-layer partitioned timed media, e.g. video, data is encapsulated, the data comprising timed samples (e.g. video frame), each sample being encoded into a first and at least one second layer (e.g. base (110) and enhancement (130) layers), at least one sample comprising at least one subsample, each subsample being encoded (e.g. using HEVC) into the first or the at least one second layer. At least one subsample is obtained from at least one of the samples and a track is created comprising the obtained subsample. A descriptive metadata is generated which is associated with the track, the metadata being organized into one main descriptive box per track or per first and second layers. The information describing the organization of the different layers is included into one or more sub-boxes, wherein at most one main descriptive box comprises the one or more sub-boxes. Alternatively, if the main descriptive box is related to a track resulting from the encapsulation of a subsample being encoded into the at least one second layer, then at least one sub-box of the main descriptive box comprises a type parameter for signalling that the media data are multi-layer tiled media data. The encapsulated data is subsequently recovered. |
