Method and apparatus for encapsulating derived tracks

摘要

Encapsulating a file of image data, comprising generating a derived track, wherein the derived track 54 comprises information indicating that one input track of a derivation operation or transform property is the output of a previous derivation operation 53. Preferably the indication comprises a list of references indices to input tracks or items and a bit-mask which indicates the inputs 541 to be used in an associated derivation operation. Preferably, if the index of the reference track in the list is zero, then the output of the previous derivation or transform operation 53 is used as input. Using the setting of the most significant bit of the reference track indices, the bitmask may refer to outputs of other previous derivation operations 51 in the sequence. Other claimed inventions are encapsulating a file of image data, comprising generating a derived track, wherein: the derived track comprises post-decoder operation information; the derived track comprises an edit-list information; or the derived track configuration data structure comprises an indication for determining the size of the derived sample.