Patent ID: 7191242

Claim:
A method of producing a representation of a streaming media data at a caching proxy server, said method comprising: transmitting a request for streaming media data to be delivered to said caching proxy server; transmitting a request for one or more Real-Time Protocol (“RTP”) header extensions associated with said streaming media data, wherein each of said one or more RTP header extensions represents a type of related or unrelated data that is necessary for performing a particular transmission operation for a packet of said streaming media data; receiving said streaming media data and storing said streaming media data on a storage device which is capable of being controlled by said caching proxy server; and receiving said one or more RTP header extensions associated with said streaming media data, wherein each of said one or more RTP header extensions is a sub-extension in an extensible extended RTP header of the packet of said streaming media data, wherein the sub-extension has a sub-extension name code and data, wherein the sub-extension name code uniquely identifies and describes the type of the data in the sub-extension, and a sub-extension identification (ID) identifying the sub-extension within each RTP packet.