METHOD FOR SYNCHRONISING SUBTITLES WITH AUDIO FOR LIVE SUBTITLING

摘要

The present invention relates to a method and device for synchronizing subtitles with audio in live subtitling, wherein live subtitle and audio synchronization that is proposed determines an individual subtitle delay ”t i of each subtitle i and creates a subtitle unit S i with the subtitle i and the individual subtitle delay ”t i . Each subtitle unit S i is introduced in one or more subtitle PES packets with a presentation time stamp PTS i and together with a configurable associated shift delay REST. Said packets are part of an extended transport stream including audio packets containing at least one audio fragment j and a presentation time stamp PTS j . The synchronization of subtitle packets with audio packets is performed by creating a synchronized transport stream comprising all the packets of the extended transport stream delayed a time depending on a configurable associated shift delay REST.