这篇文档是对TS封装的详细规定： This Recommendation | International Standard specifies the system layer of the coding. It was developed in 1994 to principally support the combination and synchronization of video and audio coding methods defined in Parts 2 and 3 of ISO/IEC 13818. Since 1994, this standard has been extended to support additional video coding specifications (ISO/IEC 14496-2 and ISO/IEC 14496-10), audio coding specifications (ISO/IEC 13818-7 and ISO/IEC 14496-3), system streams (ISO/IEC 14496-1 and ISO/IEC 15938-1), IPMP (ISO/IEC 13818-11) as well as generic metadata. The system layer supports six basic functions: 1) the synchronization of multiple compressed streams on decoding; 2) the interleaving of multiple compressed streams into a single stream; 3) the initialization of buffering for decoding start up; 4) continuous buffer management; 5) time identification; and 6) multiplexing and signalling of various components in a system stream.