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Real Time Transport Protocol - RTPReal time transport protocol - RTP is a set of commands and processes that can be used to add timing and sequence information to each packet to allow the reassembly of packets to reproduce real time audio and video information. RTP is defined in RFC 1889. RTP is the transport used in IP audio and video environments.
Real Time Transport Protocol - RTP Operation
This diagram shows how real time transmission control protocol (RTP) operates to send real time data through a packet network that may have variable transmission delays. This diagram shows that an RTP system requires that a real time signal (e.g. audio signal) be converted to digital form (digital audio) prior to transmission. This digital signal is divided into small packets. The RTP protocol is a high-level protocol and each packet of data each of the transmitted packets starts with an IP header that contains the destination address of the packet. An additional flow control protocol header is added (usually UDP protocol header) to identify the specific port the data will be routed to at it's destination. The RTP system then adds a third header (the RTP control header). The RTP system uses a precise clock to add time stamp information to each packet along with other signal recreation control information. Because the packets may have different types of compression and their recreation time can dramatically vary, the RTP protocol header uses the time stamp and other information to decode the and recreate the data packet.
MPEG Books
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Introduction to MPEG Book
This book explains the basics of audio and video digitization and compression and the standard formats that are used be MPEG. You will learn about the different MPEG audio coders and video coder options. $19.99 Printed, $16.99 eBook |
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