Patent Number: 6,298,089

Title: Method for seamless and near seamless audio and non-video splicing of a digital transport stream

Abstract: In a system of seamless splicing of multimedia data streams, the method includes the steps of scanning forward in time until a first audio Packetized Elementary Stream (PES) header with an Audio Presentation Time Stamp (APTS) greater than the Video Presentation Time Stamp (VPTS) is detected. Then, continuing to scan audio packets until an audio frame header is detected, and replacing each audio packet encountered that did not contain this specific audio frame header (or Audio PES header) with a null packet. By these steps, an audio splice-in point that does, in fact, support a near-seamless audio splice is determined. The method of accomplishing a near-seamless audio splice includes the steps of scanning forward in time until the first audio PES header with APTS greater than VPTS is detected, and replacing each audio frame header with a null packet.

Inventors: Gazit; Hillel (Palo Alto, CA)

Assignee: Viewgraphics, Inc.

International Classification: G11B 27/031 (20060101); G11B 27/036 (20060101); H04L 29/06 (20060101); H04N 7/24 (20060101); G11B 27/034 (20060101); H04B 001/66 ()

Expiration Date: 10/02/2018