| 摘要 |
PURPOSE: An apparatus and a method for generating and recovering an RTP(Real-time Transport Protocol) packet are provided to efficiently encapsulate a plurality of SL(Synchronization Layer) packets, which transmit an MPEG(Moving Picture Experts Group)-4 stream, in one RTP packet. CONSTITUTION: A setup unit(300) invests a CTS(Composition Time Stamp), a DTS(Decoding Time Stamp), a PSN(Packet Sequence Number), which are successively increased according to a packet generation sequence, to a plurality of SL packets, and extracts a time stamp length and a packet sequence number length from an LSCD(SL Configuration Descriptor) in the SL packets. A packet generating unit(330) generates a header of an RTP packet and a header of the SL packet accommodated in one RTP packet on the basis of the CTS, the DTS, the PSN, the time stamp length, and the packet sequence number length. |
