1. Streaming Multimedia Providing the Net Generation with Instant Multimedia and Looking Good While Doing It.

2. 2 Introductions Joe Wack – Multimedia Support Manager Crestron Programming A/V Systems Design Streaming Media Flash/Javascript Media Services Digital Media Lab Me My Video Wall My Desktop

3. 3 Introductions Rhodes College– Memphis, Tennessee

4. 4 Outcome Modeling http://www.scad.tv/ http://www.virginia.edu/uvapodcast/ http://www.gettysburg.edu/podium/index.dot http://ms.rhodes.edu/

5. 5 What are You Doing? Currently working on Rhodes Video Portal, considering using Delve, while creating our own with osTubeDelveosTube [Information from other schools goes here about such things as web portals, video on demand, etc.]

6. 6 Multimedia Streaming Overview Stream – strēm Noun 1: a body of running water or any body of flowing fluid 2 a: a steady succession b: a constantly renewed or steady supply c: a continuous moving procession 3: a ray of light What is Streaming? A way of transferring data Requires a persistent connection Transient - Data is stored in a local buffer Bandwidth dependent Simpler than we usually think What is it not? YouTube Bandwidth efficient Totally secure

7. 7 Standards and Terms RTMP: Real-Time Messaging Protocol RTSP: Real-Time Streaming Protocol RTP: Real-time Transport Protocol Multicast Unicast Codec Encoder Digitize SQL MPEG [more as they occur to me]

8. 8 Commonly Streamed File Formats Audio:.MP3 Vorbis ACC.RA Video:.MP4.FLV.MOV.WMV Theora.RV Metadata (Usually Accurate) Video (Usually MPEG-4) Audio (Usually AAC) Bun (Usually Sesame) Lettuce (Usually Fresh) Tomato (Usually Red) Cheese (Usually American) Meat (Usually Angus)

9. 9 Discussion Progressive Download Streaming vs.

10. 10 Audio vs. Video, Fight! Audio bandwidth and storage requirements Storage: 192 kbps MP3 x 180 s = 34560 kb/8000= 4.32 MB Bandwidth: 192 kbps x # of listeners (30 listeners) = 5760 kbps or 5.76 mbps Video bandwidth and storage requirements Storage: 1692 kbps MP4 x 7200 s = 12182400 kb/8000 = 1522.8 MB Bandwidth: 1692kbps x # of watchers (30 watchers) = 5076 kbps or 50.76 mbps

11. 11 Streaming Solutions Five Major Streaming Solutions 1.Quicktime/Darwin 2.Windows Media 3.Flash 4.Real Media 5.Open Source

12. 12 Quicktime/Darwin Streaming Pros: Cheap/Free (Comes with Max OSX Server) Easy to implement Very good stream quality Cons: Not terribly interactive (just a video/audio window) Customization requires advanced programming skills Requires Quicktime installed Here’s a link to Darwin Streaming ServerDarwin Streaming Server Question: How could this work with an AJAX interface?

13. 13 Windows Media Streaming Pros: Cheap, comes with server Good quality streams Cons Requires windows media player Server requires Windows, no Mac/Linux version Not terribly interactive (just a video/audio window) Customization requires advanced programming skills Here’s an example Here’s an example with SilverlightSilverlight Question: How could this work with an AJAX interface?

14. 14 Flash Streaming Pros: Highly customizable Very good quality streams Flash player is ubiquitous Cons: Expensive (streaming software is ~$600) Requires Flash programming knowledge No Mac version of streaming server Here’s a link to the development serverthe development server And a link to Flash Professional CS4 EvaluationFlash Professional CS4 Evaluation If you’re feeling adventurous, Flex builder is available for free to educators and students.Flex free to educators and students

15. 15 Real Media Streaming Pros: Cheapish Usually a turnkey system Easy to encode/push to server Cons: Lower quality Requires bulky Realplayer Difficult to customize Windows/Linux/Solaris only Here’s an example Question: How could this work with an AJAX interface?

16. 16 Open Source Streaming Pros: Free! Very good quality Cons: No official support Lots of setup overhead Typically ugly Requires unusual plug-ins and players Here’s a link to Red5Red5 And a link to icecast and ShoutcasticecastShoutcast And a link to Rhodes Radio (also the backend)Rhodes Radio the backend

17. 17 Organizational Methods How do we keep this files in line? Disk and folder structure How do we control access and secure content? LDAP authentication File permissions Network access limitations Physical machine limitations How do we reference the actual data? MySQL XML PHP Javascript Flash

18. 18 Databases Pros: Free! (mySQL) Well established Fast Highly customizable Cons: Requires mastering some new language Might be overly complicated

19. 19 Course Management Systems Why embed within a CMS Solves authentication and class limitation requirements Provides pre-customized interface Saves time Why not? Only as customizable as the CMS Requires that professors use CMS to access streams

20. 20 Institutional Repositories Question: How are institutional repositories different from course management systems? Visit our poster sessions for additional info. Also visit www.crossroadstofreedom.orgwww.crossroadstofreedom.org

21. 21 Helpful Sites Wikipedia's Streaming Media Entry Streaming at the University of Wisconsin Developing Media Applications Real’s Guide to Multicasting Relays and Bandwidth Management Open Source Flash - red5 UT Austin Web Video Guidelines Welcome To The International Webcasting Association Internet Streaming Media Alliance