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介绍了ＨＤＴＶ视频编码系统的同步机制以及各同步信息元素，详细分析了ＭＰＥＧ－２码流中同步信息ＶＢＶ＿Ｄｅｌａｙ，ＰＴＳ，ＤＴＳ和ＰＣＲ域的构成，并给出了在实时码流合成器中ＶＢＶ＿Ｄｅｌａｙ和ＦＴＳ， ＤＴＳ的设计，以及在传送复用器中ＰＣＲ的插入设计。通过对系统输出码流的测试表明，该ＨＤＴＶ实时编码系统的同步设计完全符合ＭＰＥＧ－２的要求，使解码器能实现时钟的精确恢复和音视频的同步并长时间稳定地工作。
The synchronization mechanism of HDTV video coding system and the elements of synchronization information are introduced. The structure of VBV_Delay, PTS, DTS and PCR domains of synchronization information in MPEG-2 stream is analyzed in detail. The structure of VBV_Delay and FTS, DTS design, as well as in the transport multiplexer PCR insertion design. The test of the system output stream shows that the HDTV real-time coding system’s synchronization design fully complies with the requirements of MPEG-2, so that the decoder can accurately recover the clock and synchronize the audio and video and work stably for a long time.