Systems Support for Continuous Media

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Systems Support for Continuous Media
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Scope of this class

• Systems Support
• Application
• Middleware
• Operating System
• Architecture
• Continuous Media
• Video, audio, animation

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Local Media Applications

• Watch Movie
• Listen to Music
• Video Editing

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Network Media Applications

• Live Webcast
• Pre-recorded Webcast
• Video Conferencing
• Video on Demand

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Categories
Interactive Non-Interactive
Live Video Conferencing NUSLive, NUSCast
Pre-recorded Lecture/Video on Demand
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Streaming Media Requires

• Reliable networks
• Low latency
• Bounded latency
• Plenty of bandwidth
• Not in todays Internet.

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Overview
Encoder
Decoder
Middlebox
Receiver
Sender
Network
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We will NOT

• Design new codec
• Study media processing
• CS6212/CS5240/CS5249
• Attempt to improve the Internet
• EE5910/CS5224

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Summary of TopicsCovered
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Sample of Topics Covered

• Review of Media Compression
• Network Communication Model

Encoder
Decoder
Middlebox
Sender
Receiver
Network
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Sample of Topics Covered

• Adaptation
• Video on Demand

Encoder
Decoder
Middlebox
Sender
Receiver
Network
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Sample of Topics Covered

• Buffering
• Audio/Video Synchronization
• Packet Loss Recovery

Encoder
Decoder
Middlebox
Sender
Receiver
Network
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Sample of Topics Covered

• Caching
• Application-Level Multicast

Encoder
Decoder
Middlebox
Sender
Receiver
Network
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Lecture Philosophy

• Cover the breadth, rather than depth (unless
  related to project)
• Classic papers, rather than recent papers

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Class Organization
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Goals

• Learn about existing techniques and systems
• Learn about current research efforts

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Philosophy

• Students are expected to be
• Mature
• Independent
• Resourceful
• What you learned is more important than grade

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Please dont ask..

• Is this equation important?
• Is this equation examinable?
• Do I have to memorize this header format?
• Post answer to quiz/survey/review

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Please do ask ..

• What is the effect of changing k in the
  equation?
• Why did the designer added this bit in the
  header?

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Academic Honesty

• No copying among students
• No copying from published work
• ZERO TOLERENCE to Plagiarism

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Discussion?

• Strongly encouraged ..
• but
• must acknowledge all contributions
• write up solutions independently

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Continuous Assessments
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Continuous Assessments

• Project (50)
• Exam (20)
• Quizzes and Assignments (30)

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Project (50)

• Implement a video streaming sender and receiver
• C and Tcl
• Given constraints, implement a scheme that
  optimizes received quality

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Project

• Organized into stages
• Work in pair

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Project

• Deliverables
• 4-6 page paper
• Demo (?)

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Final Exam (20)

• Open Ended Questions
• Essay Style

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Quizzes/Assignments (30)

• Quizzes
• Open Ended Questions
• Assignments
• Survey a topic
• Criticize a paper

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Web Sites

• Main Website
• http//www.comp.nus.edu.sg/cs5248

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Q A