METHOD AND APPPARATUS FOR MULTIPLEXING AND DE-MULTIPLEXING VIDEO DATA FOR INDENTIFYING REPRODUCTION STATUS OF VIDEO DATA

摘要

PURPOSE: A multiplexing method, a device using the same, a demultiplexing method, and a device using the same for identifying the play state of video data is provided to save system resource used for decoding of pictures which do not need to be decoded by identifying a replay state whether a normal play state and a random access state in aspect of a hardware or a software related to a decoding device. CONSTITUTION: A video encoding unit encodes pictures comprising video data based on a data unit of a hierarchical structure(1810). When a decoding device requests encoded data transmission, a play state identification unit determines whether the transmission request is for a normal play or a random access(1820). According to results, a multiplexing unit adds a predetermined syntax to CRA(Clean Random Access) picture to multiplexed transmission unit data(1830). [Reference numerals] (1810) Encoding pictures comprising video data based on a data unit of a hierarchical structure; (1820) Determining whether the transmission request of the encoded data is for a normal play or a random access; (1830) Adding a predetermined syntax indicating an intra picture according to a request for the normal play or a request for the random access to transmission unit data multiplexing the intra picture with leading pictures; (AA) Start; (BB) End