Streaming allows audio and video content to be delivered over the internet without requiring users to wait for files to fully download. It works by segmenting files into packets that are played as they are received. There are two main types of streaming architectures: multicast, which broadcasts content to multiple clients simultaneously, and unicast, which delivers private streams to each client individually. Common streaming applications include video on demand, web-based TV, music distribution, and internet radio. Key streaming protocols are HTTP, FTP, RTP for real-time transport, and RTSP for controlling multimedia delivery and providing functions like play, pause and stop.

1. Streaming

2. Outline
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Services &
Streaming
Conclusions
Introduction
Demonstration
Protocols
Definition
architectures & types
applications

3. Introduction
• The first generation of web pages was only made with text.
Solution
• Nowadays multimedias take an important part in most web
application.
Streaming is set to transform the World Wide Web:
• There video and audio are accepted as the most natural by
was a problem in the quality of multimedia transfer
the internet. communicate.
way to
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4. What’s Streaming ?
• streaming : transmit audio & video and other
multimedia over the internet without making
viewer waiting.
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5. How streaming video & audio works
?
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6. Streaming architecture
Multicast
Unicast
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7. Streaming Types (1/2)
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8. Streaming Types (2/2)
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9. Streaming Services
• Education (E-learning)
• Web-based channels (Web TV, Web
monitoring,Internet radio)
• Video-on-demand (VOD)
• Music distribution (music on-demand)
• Internet and intranet browsing of content (asset
management)
• Internet broadcasting (corporate
communications)
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10. Principle Streaming
Streaming is based primarily on:
• Broadcast a video of a server to a client.
• Segmentation of the video.
• Assemble packets.
• The video is played on as the packets arrive.
• At the end these packets are then destroyed.
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11. Streaming Applications
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12. Streaming Protocols :
There are currently three protocols that allow for
streaming:
• HTTP.
• FTP.
• RTP.
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13. Streaming Protocols : RTP(1/2)
RTP (Real Time Protocol) :
• RTP was created in 1996 and was defined in RFC 1889
to define functions in real time as the broadcast audio
and / or video.
• The principle of RTP is to send packets in real time on
the network.
• This packets are marked temporally so as to be
rescheduled by the client.
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14. Streaming Protocol :RTP(2/2)
Header IP Header UDP Header RTP Audio & Video Data
• Sequence number : detect packet loss ,sequences loss in the
correct order.
• Timestamp : Synchronization & jitter calculation.
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15. Streaming Protocols : RTSP(1/2)
RTSP (Real Time Streaming Protocol):
• RTSP was created in 1998 by RFC 2326 allows to
control multimedia streams delivered via RTP.
• RTSP is an application layer protocol designed to
operate on protocols such as RTP/RTCP and RSVP.
• It can control the distribution of multimedia streams.
• It provides VCR-like functions remotely like:
– Reading.
– Pause.
– Stop.
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16. Streaming Protocols : RTSP(2/2)
Setup Start an RTSP session and resource allocation
for a stream
Play and Record Start data transmission of the stream
Pause Temporarily halt a stream without freeing server
resources
Teardown Free resources associated with stream and end
of a session
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17. Streaming Protocols :RTCP
• RTCP : Real time Control Protocol
• RTCP is used in conjunction with RTP.
• Feed back on the quality of service (reports : nbre packets
, lost , statistics)
• The feedback messages include reports, such as number
of packets lost and jitter statistics (early or late arrivals).
Recognition of flaws.
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18. Conclusion
Streaming allows us to continue to use applications where
off-line (as opposed to pure web-applications).
It allows the optimization of software licensing.
The maintenance of streaming server is relatively
expensive
It is difficult to keep the service steady if the bandwidth is
low
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19. Demonstration

20. Thank you for your
attention