The document discusses streaming media technology which enables real-time distribution of audio, video, and multimedia over the Internet. Streamed data is transmitted by a server and received/displayed by client applications. There are advantages like steady service and on-demand access, but also disadvantages like difficulty maintaining steady service with low bandwidth and high maintenance costs for streaming servers. The document then describes different types of streaming including stored, live, and interactive audio/video. It also outlines four approaches to streaming using web servers and media servers with protocols like HTTP, RTSP, and RTP.

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Presented By
Shashidhar

2.  Streaming media technology enables the real time or
on demand distribution of audio, video and
multimedia on the Internet.
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3.  Streamed data is transmitted by a server application
and received and displayed in real-time by client
applications.
 These applications can start displaying video or
playing back audio as soon as enough data has been
received and stored in the receiving station’s buffer.

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 It provides steady service
 Slower systems can take advantage of streaming technology
 Provide service on demand
Disadvantages
 It is difficult to keep the service steady if the
bandwidth is low.
 The maintenance of streaming server is relatively
expensive
 Packet loss may occur during the transmission

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 Streaming Stored Audio and Video
 Streaming Live Audio and Video
 Real-Time Interactive Audio and Video

6.  storing of pre recorded videos on the servers.
 user can perform any action at anytime there is no
restriction.

7.  It consists 4 different ways of approaches
1. Using a web server.
2. Using a web server metafile.
3. Using a media server
4. Using a media server and RTSP.
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Web
Browser
Media
Player
Client
Web Server
With Audio
Files
HTTP
Files
RESPONSE
REQUEST

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Web
Browser
Media
Player
Client
Web
Server
HTTP
Audio/Video file
requested and sent
using HTTP
HTTP request /response
for meta file
meta file
A meta file contains information of URL, type of encoding, etc
about the audio/video file that is to be streamed.

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Web
Browser
Media
Player
Client
Web
Server
Streaming
media
Server
RTSP Streaming Command
HTTP request/response
meta file
HTTP is insufficient for user interaction. With streaming server
audio/video file can be sent over UDP,
RTP Audio / Video
Content

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 RTSP: Real Time Streaming Protocol

13. RTP:Real Time protocal

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 RTSP is a industry standard Internet application level
protocol
 RTSP is a framework for delivering and
transmission of multicast data stream
 RTSP is a protocol that allows a media player to
control the transmission of a media stream for
exchanging control information

15.  Broadcasting of audio and video by radio and TV
stations
 All the stations broadcast through the internet
 Retransmission is not possible and it is multicast.
 Live streaming is better suited to the multicast
services of IP and the use of protocols such as UDP
and RTP.

17.  In real-time interactive audio/video, people
communicate with one another in real time.
 The online meetings and video conferences comes
under this category.
 Ex:
Zoom, google meet, goto meeting etc..

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Start Line
Message Header
……
Message Header
CRLF
[message body]
Method SP Request-URI SP RTSP-Version CRLF
RTSP-Version SP Status Code SP Reason Phrase CRLF
Request-Line
Status-Line
Field-name : field-value CRLF
Header

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 RTSP works in the conjunction with RTP to
deliver streaming audio & video content
 RTSP maintains a server state during
transmission unlike HTTP
 Client-Server architecture
 Overcome the limitations of HTTP. RTSP
enhance HTTP functions
 RTSP provides the synchronization of events

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Payload Sequence Timestamp Synchronization Misc
type number source identifier
 RTP is used to transmit real-time data
 RTP encapsulate segments

21.  Time relationship
 Time stamp
 Playback buffer
 Ordering
 Multicasting
 Translation

22.  Real-time data on a packet-switched network require
the preservation of the time relationship between
packets of a session.

23. • Jitter is introduced in real-time data by the
delay between packets.

24.  One solution to jitter is the use of a timestamp.

25.  Ordering:
it provides sequence number of each packet
and helps in informing about lost in recievers
packet.
 Multicasting:
two way communication between the senders
and recievers.
 Translation:
required for changing high bandwidth signal to
low quality narrow band width signal