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Guidelines for Presenting Archived Video on the Web: An Overview AECT Annual Convention Dallas, TX October 12, 2006 David Klein K. “Fritz” Thompson.

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Presentation on theme: "Guidelines for Presenting Archived Video on the Web: An Overview AECT Annual Convention Dallas, TX October 12, 2006 David Klein K. “Fritz” Thompson."— Presentation transcript:

1 Guidelines for Presenting Archived Video on the Web: An Overview AECT Annual Convention Dallas, TX October 12, 2006 David Klein K. “Fritz” Thompson

2 Overview  Introduction  Technology of web-based video  Video players  Analysis  Future

3 About Us  Law, Health Policy & Disability Center   Standup training  Accessible video of talking heads  Almost 100 hours online video  75 hours of online audio

4 About Us  Players  QuickTime  Windows Media Player  Flash  Closed captioned  Supporting documents  Transcripts  Handouts  PowerPoints  Accessible for people with disabilities

5 Archived Video  Any stored video, available on demand via the Web

6 Clients vs. Servers Server Clients

7 Clients vs. Servers  Server  Stores HTML, video, caption text, other files  Files stored on different servers  Client  Displays HTML in browser  Launches players  Assembles/packages the pieces  Video  Caption  Video Player  HTML

8 Client View Browser Window Embedded Player Video Captions Supporting Information

9 Embedded Captioned Video HTML File ServerClient Video File Caption File Combining File

10 External Video User clicks link Standalone Player Client standalone player is launched

11 Web-based Video Delivery  Streaming  Download  Progressive download

12 Streaming  Continuous, active client-server connection  Benefits  Live broadcasts  Low client hard drive space usage  Protection of intellectual property (IP)  Disadvantages  High bandwidth  Network expertise  Troubleshooting  May require client network setup (firewalls)

13 Download  Movie downloaded to client drive & THEN played  Benefits  Minimizes bandwidth  Multiple views from same download  Distribute to others  Disadvantages  Must use standalone player  Usability  Requires hard drive space  Disconnected from supporting information (copyright)  Distribute to others

14 Progressive Download  Play video WHILE downloading  Benefits  Maximizes experience – bandwidth vs. wait time  Can be saved and redistributed  Range of IP protection control  Easiest for users  Disadvantages  Uses hard drive space (but temporarily)  Starts and stops  Once downloaded, can be disconnected from supporting information

15 Compression  See differences in compression codecs and settings Click.

16 Decision Matrices  Learning Context Analysis (Source)  Learning Context Analysis (Learner)  Learner Analysis

17 Learning Context (Source)  Production Quality – outlined techniques that improve quality for web-based video  Emphasize audio (usually) Audio without video is radio Video without audio is junk  Product Quality – range of quality that would be likely in these environments

18 Learning Context (End Product)  Streamed video  Biggest difference – knowledge and experience needed for production  Cost a factor  Progressive Download  Not much difference

19 Learner Analysis  Cost  Cognitive load: actions required by learner  E.g., download and install plugin  Consistency and usability of menus  Marketing by player manufacturers  Flexibility and scripting support  OS and browser support

20 Future  iPods and personal media players  Inexpensive hosting  YouTube  Google  Yahoo!  Podcasting (vodcasting?)  Video on demand (commercial)  HD

21 Contact  Law, Health Policy & Disability Center   This presentation   LHPDC Bulletin Board  David Klein Boyd Law Bldg. College of Law University of Iowa Iowa City, IA K. “Fritz” Thompson Boyd Law Bldg. College of Law University of Iowa Iowa City, IA


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