Extension Data Handling

摘要

A length indicator (23) associated with an encoded representation (20) of a slice (3) is parsed. The length indicator (23) is indicative of a length of an extension field (24) present in a slice header (21) of the encoded representation (20). A decoder (40) can then determine to ignore, during decoding of the encoded representation (20), any value of the extension field (24) in the slice header (21) where these values are identified based on the length indicator (23). As a consequence, extension fields (23) can be added to slice headers (21) and still enable legacy decoders (40) to correctly decode the encoded representations (20).

主权项

1. A method of decoding an encoded representation of a slice of a picture, said encoded representation comprising a slice header and slice data, said method comprising:
parsing a length indicator associated with said encoded representation and indicative of a length of an extension field in said slice header; and determining to ignore, during decoding of said encoded representation, any value of said extension field identified based on said length indicator.