tdw teams presenter : yi-hsuan chen contact : lsi@nchc.tw

TDW TeamsPresenter : Yi-Hsuan Chen

Contact : lsi@nchc.gov.tw

National Center for High-performance Computing, Taiwan

Date: 14/07/2009

A Distributed Architecture for Real-Time High Resolution Video

Streaming

22

Outline

IntroductionDistributed System Architecture (Three units)Real-Time Video Streaming CaseConclusions

33

Introduction

Specific device, stream formats, resolution

44

Distributed System Architecture

One stream, multiple purposes

These three units are designed as loose-coupling architecture

Image Processor Capture unit Presentation unit

55

Three-tier architecture (1/3)

Video input(Device/Interface)

Format(Tool/Stream Format)

HDV(1394) HD/MPEG-2TS

DV(1394) DVTS/RAW DV

WEB-CAM(USB) VLC/MPEG-4CABLE(CAPTURE CARD)

VLC/MPEG-4

*HD, DVTS, and VLC are open source software

Capture unitImage ProcessorPresentation unit

66

Three-tier architecture (2/3)

Stream Receiver :VLC + FFMPGE

Image Processor : stream clipping image processing image management

Image Navigation: security control

Capture unitImage ProcessorPresentation unit

77

Three-tier architecture (3/3)

Can view the video from web browser or standalone versionThe historical monitoring window

Capture unitImage ProcessorPresentation unit

88

Distributed stream compression Two compression concepts have been implemented

Client-Server basedReduces network bandwidthTransfers video stream to multi-formats(mp4,wmv,flv,mjpeg)

Server-side basedDynamically assign the video stream to suitable servers depending on loading.Compresses the video stream to a variety of bit-rates for different network bandwidth

99

Distributed stream compression

Native VS With compression concepts

1010

Real-Time Video StreamingEcological Observation in Ken-Ting

1111

Real-Time Video StreamingEcological Observation in Lanyu

1212

Ecological Observation in Ken-Ting

web-based presentation interface of four underwater cameras

HDV stream of National museum of marine biology and aquarium (Taiwan)

View on iPhone

1313

History Data

1414

ConclusionHas been proofed in real time high-resolution ecological observationPlug and StreamLoosely coupled architecture, easy to scale-upSupport multiple streaming methodsBased on open source software, no hi-end hardware required.

1515

Thank You !!

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