SYSTEM AND METHOD FOR MOTION PICTURE EXPERT GROUP (MPEG) TRANSPORT STREAM SPLICING

摘要

A system to splice new content into a live stream in a single frequency network. The system includes a program clock reference (PCR) adjustment module, an intelligent packet replacement module, and a rate adaptation module to match a stream rate associated with the live stream with a stream rate associated with the new content.

主权项

1. An apparatus to splice MPEG transport streams in a communications network, the apparatus comprising:
an input to receive a first transport stream, the first transport stream comprising a first clock marker; a storage unit storing therein a second transport stream, the second transport stream comprising a second clock marker; a reference clock adaptation module coupled to the input and the storage unit, the reference clock adaptation module receiving the first transport stream from the input and the second transport stream from the storage unit, the reference clock adaptation module using information contained in the first clock marker to adjust the second clock marker to produce an adjusted clock marker and replacing the second clock marker with the adjusted clock marker in the second transport stream to produce an adjusted transport stream; and a splicing subsystem coupled to the rate adaptation module to splice the first transport stream together with the adjusted transport stream.