A%20Programmable%20Client-server%20Architecture%20for%20Adaptive%20Streaming

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A Programmable Client-server Architecture for
Adaptive Streaming

• Thomas Blin, Yves Gréalou, Wilfried Jouve, Fabien
  Verhulst
• Supervisors Charles Consel Mathieu Minard

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Plan

• Introduction
• Motivation
• Implementation
• Demonstrations
• Server possibilities and limits
• Future work

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1. Introduction

• New challenges for streaming architectures
• Adapt to access point features
• Adapt to user's choices

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2. Motivation

• Existing problems
• VCR-like operations
• Client restrictions (memory, resolution)
• Server insensitive towards clients
• Our goal
• Server sensitivity to client features and
  preferences

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3. Architecture and Context

• Server side
• Registration
• Characteristics
• Stream Adaptation
• Client side
• Browser
• Media Player

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4. Work Environment Clients

• Common Operating Systems
• Linux, Windows XP, Mac Os X
• Common browsers
• Mozilla, Safari, Internet Explorer
• Common RTSP clients
• MPlayer, Quick Time, VLan

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4. Work Environment the server

• Linux operating system
• MySQL database
• HTTP server (Apache and PHP)
• Streaming server (live.com)
• Adaptation server (ffmpeg)

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5. Stream Adaptation
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5.1. Device and Driver
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5.2. Translator strategy
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5.3. Demonstration 1
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6. Client/Server Interaction
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6. Demonstration 2
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7. Assessment

• Available right now
• 700 drivers
• 5 video transformations
• Future work
• Audio processing
• Multicast scenario
• Dynamic transformations
• Scalability of the server

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8. Towards Scaling Up

• Admission policy
• High workload
• Cost of a driver
• Multicast (live)
• List of running drivers
• List of default drivers
• Conclusion

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Questions?