Chapter 6 - Multimedia Over Ip

Chapter 6 - Multimedia Over Ip

• 1.
  Chapter 6 Multimedia OverIP -PRATIK MAN SINGH PRADHAN (WWW.PMSPRATIK.COM.NP)- MMS2401 – MULTIMEDIA SYSTEMS & COMMUNICATIONS (3 CREDITS)
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  IP (Internet Protocol) The Internet Protocol (IP) is the principal communications protocol in the Internet protocol suite for relaying datagrams across network boundaries.  Its routing function enables internetworking, and essentially establishes the Internet.
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  Multimedia over IP MoIP is an expression used to describe the transport of various types of media as a payload of an IP datagram.  Typical media examples include voice, messaging and video.
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  Multimedia Conferencing  Multimediaconferencing is to interact with people across the world.  It uses certain tools like cameras, computers and internet.  Adobe Connect is one of the tool to broadcast the events interactively to the web.  Polycom video conferencing system supports meetings with peers all over the world.  The interactive conferencing includes certain gadgets like audio speakers, LCD projectors.  Adobe Connect need to configure to access the multimedia.  Polycom is one of the video conferencing tools.
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  Multimedia Conferencing Process Make sure that the conferencing software are installed at both the client computers.  Make sure both of the clients are connected to the server using the internet.  Make sure all the input and output devices such as microphone, speakers, monitors are well connected.  Start the conferencing from the conferencing software.
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  Multicast  IP multicastis a method of sending Internet Protocol (IP) datagrams to a group of interested receivers in a single transmission.  It is often employed for streaming media applications on the Internet and private networks.  The method is the IP-specific version of the general concept of multicast networking.
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  RTP/RTCP  The RTPControl Protocol (RTCP) is a sister protocol of the Real-time Transport Protocol (RTP).  RTCP provides out-of-band statistics and control information for an RTP session.  It partners with RTP in the delivery and packaging of multimedia data, but does not transport any media data itself.  The primary function of RTCP is to provide feedback on the quality of service (QoS) in media distribution by periodically sending statistics information to participants in a streaming multimedia session.
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  RSVP  RSVP isthe network control protocol that allows data receiver to request a special end-to-end quality of service for its data flows.  Real-time applications use RSVP to reserve necessary resources at routers along the transmission paths so that the requested bandwidth can be available when the transmission actually takes place.  RSVP is a main component of the future Integrated Services Internet which can provide both best-effort and real-time service.
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  RTP  The Real-timeTransport Protocol (RTP) is a network protocol for delivering audio and video over IP networks.  RTP is used extensively in communication and entertainment systems that involve streaming media, such as telephony, video teleconference applications, television services and web-based push-to-talk features.
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  RTP Work Process RTP is designed for end-to-end, real-time, transfer of streaming media.  The protocol provides facilities for jitter compensation and detection of out of sequence arrival in data, which are common during transmissions on an IP network.  RTP allows data transfer to multiple destinations through IP multicast.  RTP is regarded as the primary standard for audio/video transport in IP networks and is used with an associated profile and payload format.
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  Packetization  A networkpacket is a formatted unit of data carried by a packet-switched network.  Computer communications links that do not support packets, such as traditional point-to-point telecommunications links, simply transmit data as a bit stream.  The process of breaking down the data in smaller packets for easy transmission is known as packetization.
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  Streaming  Streaming mediais multimedia that is constantly received by and presented to an end-user while being delivered by a provider.  The verb "to stream" refers to the process of delivering media in this manner; the term refers to the delivery method of the medium, rather than the medium itself, and is an alternative to downloading.