PRE-PROCESSING FOR ADAPTING MPEG-4 DATA FLOWS TO THE INTERNET NETWORK

摘要

The invention relates to a preprocessing method for adapting digital data streams such as MPEG-4 ones to the so-called real time protocol (RTP) used by the "Internet" network. A synchronization layer SL being the interface defined between MPEG-4 media layers and the RTP stack, a reduced SL header format is specified in order to fit to the RTP header. Considering that the RTP header fields that are common to the SL header specifications are: padding, marker, sequence number, and time stamp, the semantic of the RTP fields according to the MPEG-4 SL data that are carried in the packets is redefined.