SURA/ViDe 5th Annual Digital Video Workshop GCATT Atlanta, Georgia March 26, 2003 The ViDe Guide to Streaming Media.

SURA/ViDe 5th Annual Digital Video Workshop

GCATT — Atlanta, GeorgiaMarch 26, 2003

The ViDe Guide toStreaming Media

Presentation Outline

• Cookbook Overview• Creating Digital Assets• Building an Infrastructure• Managing Digital Repositories• Authentication and Authorization• Accessibility Issues• Emerging Technologies

Streaming Media Working Group

• Established in April 2002• 38 Individual Members• Representing 18 Universities &

Consortia• Including 7 SURA Schools• And 2 International Members• 12 Member Editorial Board

Streaming Media Cookbook

Mission:To help educational institutions plan

and promote streaming media services on their campuses

Snapshot of Current Services

• Statistical Sample of US Universities

• Comprehensive Survey of I2 Schools

• Comparison with International Practice

Scope of the Cookbook

• Media-on-Demand and Live Streaming

• Audio, Video and Mixed Media• Proprietary and Standard Formats• Technical Issues and Policy Issues

Cookbook Format

• Tutorials• Best Practices• Case Studies• Evaluation Guidelines• Whitepapers• Reference Tools

Applications and Scenarios

• Electronic Reserves• Distance Education• Digital Libraries• Videoconference Archives• Public Relations and Special

Events

It Takes a Village:Identifying Strategic Partners

• Video Production Units• IT Infrastructure/Networking Services• Continuing Education• Libraries• Instructional Training• Legal Affairs• Public Relations• Help Desk

Planning for the Future

• Developing a Viable Business Plan• Integrating Disparate Roles and

Functions• Securing Institutional Commitment• Making Ends Meet• Taming the Wild Vendor• Anticipating the Unknowable

Creating Content: Pre-Production

• Validate Project Concepts• Make a Plan• Purchase Equipment and Hire

Personnel

Creating Content: Production

• Mid-Production Planning and Coordination

• Lighting• Audio• Video• Locations

– Office vs Classroom vs Studio• Wardrobe• Personnel

Creating Content: Post-Production

• Video/Audio Capture• External Capture

– Composite– USB– Firewire/iLink/IEEE1394

• Cabling• Editing

Creating Content:

Hardware/Software/Personnel

• Support/Assistance• Infrastructure• Encoding• CODEC• Application Default CODECs• Analysis/Understanding

Creating Content:

Hardware/Software/Personnel• Files Types

– Real– Quicktime– Microsoft Media Formats– MPEG1– MPEG2– MPEG4– MP3– Others

Creating Content: Support Issues

• VOD (Video on Demand– Hardware– Software– Personnel

• Live Webcasts– Hardware– Software– Personnel

Building the InfrastructureStreaming Servers

• Types of Streaming Servers– RTSP– HTTP– Others

Building the InfrastructureStreaming Servers

• Vendors– Real– Microsoft– Apple– IBM– Cisco– Macromedia– Others

Building the InfrastructureNetwork Infrastructure

• Bandwidth Requirements• Issues on the LAN

– Wireless– Ethernet Configurations

Building the InfrastructureNetwork Infrastructure

• Reaching Clients Outside your LAN– Firewalls– Modems– DSL/Cable Modems– VPNs– Proxies– Caching Servers– Content Distribution Networks (CDN)

Building the InfrastructureNetwork Infrastructure

• Multicast Issues• Streaming to Handhelds• Satellite Usage

– Content Origination (uplink)– Satellite Downlink

Building the InfrastructureStorage

• Direct Attached Storage (DAS)• Network Attached Storage (NAS)• Storage Area Networks (SAN)• Mixing Storage Architectures• Determing Needs & Product

Evaluation• Emerging Storage Technologies

Building the Infrastructure Origination of Live Content

• Where to Place Live Encoders• Network Issues• Monitoring• Automation/Scheduling• Remote Control

Building the Infrastructure Transcoding

• Issues– Quality of Source Material– Lossy vs. Lossless Compression– General Methods for Transcoding

• Products– FlipFactory– Cleaner– Anystream– ProCoder

• Automation

Managing Digital Repositories

• Leveraging Existing Systems• What is already in place?

– E-Reserves Systems– Course Management Systems– Authentication Systems– Digital Library/Content Mgmt

Systems– Local Metadata/Content Standard

Managing Digital Repositories

• Functional Requirements• Ingest Functions• Data Management/Metadata Mgmt• Archival Storage Procedures• Preservation Planning• Access Strategies – Deep or Shallow

Managing Digital Repositories

• ADMINISTRATION

• PRESERVATION PLANNING

Data & MetaData

Mgmt.

Archival Storage

Ingest Access

AIP

descriptive

info

descriptive

info

AIP

OAIS MODEL

CONSUMER

PRODUCER

Training

Discovery

Infrastructure

Training

Discovery

Infrastructure

Managing Digital Repositories

• Central vs Distributed• Why not Both?• Should your next system – be

separate or an aggregate?• Building relationships for the future• Face to Face meetings with video

counterparts• Workflow Issues – Who does What?

Authentication and Authorization

Security Basics

• Securing the Server• Securing the Network• Securing the Data on the Network• Authentication• Authorization

Authentication and Authorization

Streaming Video Security• Authentication

– User Name/Password– Credentials– Proprietary Solutions

• Authorization– User Name/Password– LDAP– Credentials– Proprietary Solutions– Digital Rights Management

Authentication and Authorization

Digital Rights Management (DRM)

• DRM Defined• DRM in Streaming Video

Authentication and Authorization

Shibboleth

Authenticate Locally, Access Globally

Accessibility IssuesSection 508 Requirements

• Requires that content dependent upon auditory or visual communication be accessible through alternative means

• http:www.section508.gov• Tools & Guidelines at:

http://www.w3.org/wai

Accessibility IssuesPragmatic Considerations

• Who is your audience, and what accessibility options are necessary to ensure effective communications?

• Web Design considerations critical• Customize with aid of Office for

Students w/Disabilities

Accessibility IssuesCaptioning Resources

• Captions preferred in separate window rather than superimposed over video

• Real and QuickTime Supported by .smil format – http:www.w3.org/AudioVideo

• WinMedia supported by .sami format• http://msdn.microsoft.com/library/

default.asp?url=/library/en-us/dnacc/html/atg_samiarticle.asp

Accessibility IssuesCaptioning Tools

• http://www.w3.org/AudioVideo• FREE SOFTWARE: Magpie

http://ncam.wgbh.org/webaccess/magpie

• COMMERCIAL SOFTWARE: CPC http://www.cpcweb.com/

Accessibility IssuesVisual Impairment

• Caption all graphics• Separate Descriptive tracks• More likely to be hardware dependent

– Braille readers• Text-to-Speech engines

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