Synchronized stream packing

Abstract

There are provided methods and apparatus for synchronized stream packing of packets that differ contextually between A/V streams in a parallel presentation. A method includes the step of identifying sub-picture/subtitle packets and/or audio packets having arrival timestamps and/or presentation timestamps that match an arrival timestamp and/or a presentation timestamp, respectively, of video packets. The method also includes the step of packing a Video Object Unit (VOBU) and/or a Transport Stream (TS) with the identified sub-picture/subtitle and audio packets and the video packets having the matching timestamps.

1 - 10 . (canceled) 
     
     
         11 . A method, comprising:
 packing an audio frame header into an audio packet at an angle change point in a Transport Stream (TS);   packing a last audio packet immediately prior to another angle change point in the TS, so as to conclude with a complete audio frame; and   packing a subtitle packet to start with an Epoch start header.