本标准定义了一种传输协议，用于通过IP网络传输实时非分段恒定可变比特率（VBR）MPEG-2传输流，包括或不包括用于从网络传输错误中恢复的前向纠错。如果包间定时在网络传输过程中发生改变，则非分段常数VBR传输流没有可预测的时基来重构信号。本标准定义了两种通过非同步IP网络传输来维持数据包间定时的方法。本标准涵盖了MPEG的封装和传输- 2传输流，但不包括其他过程，如MPEG-2编码或多路复用。

This standard defines a transport protocol for the carriage of real-time non-piecewise constant variable bit rate (VBR) MPEG-2 Transport Streams over IP networks, either with or without Forward Error Correction for recovery from network transmission errors. A non-piecewise constant VBR transport stream has no predictable time base to reconstruct the signal if the inter-packet timing is altered in transit through the network. This standard defines two methods to maintain the inter-packet timing through the non-synchronous IP network transport. This standard covers the encapsulation and transmission of MPEG-2 transport streams but does not cover other processes such as MPEG-2 encoding or multiplexing.