June 2003
Intermediate to advanced
432 pages
8h 39m
English
Content preview from RTP: Audio and Video for the InternetBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 11. Header Compression
Introductory Concepts
Compressed RTP
Robust Header Compression
Considerations for RTP Applications
One area where RTP is often criticized is the size of its headers. Some argue that 12 octets of RTP header plus 28 octets of UDP/IPv4 header is excessive for, say, a 14-octet audio packet, and that a more efficient reduced header could be used instead. This is true to some extent, but the argument neglects the other uses of RTP in which the complete header is necessary, and it neglects the benefit to the community of having a single open standard for audio/video transport.
Header compression achieves a balance between these two worlds: When applied to a link layer, it can compress the entire 40-octet RTP/UDP/IP header into ...
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