1. Video Annotation for Omeka William G. Cowan Associate Director, Digital Libraries System Development

2. Images on the Internet - 1992

3. Music on the Internet - 1999

4. Video on the Internet - 2005

5. Indiana University

6. MPEG-2 MPEG-4 MJPEG-2000 Compressed Lossless Uncompressed

7. Indiana University Digital Video Basics oVideo signal consists of Luminance and Chrominance oLuminance (Y) is the amount of brightness oChrominance is made up of two components: R – Y (hue & saturation for red minus luminance) B – Y (hue & saturation for blue minus luminance)

8. Indiana University Digital Video Basics oWhat about the green? oThe spectral response of the human eye peaks in the green frequencies oPerceived brightness can be constructed from the red, blue, and green: Y = 0.299R + 0.587G +0.114B oThus, the green can be derived:

9. Indiana University Digital Video Sampling 4:4:4

10. Indiana University More Digital Video Sampling 4:2:2 - D-1, D-5, DigiBeta, BetaSX, Digital-S, DVCPRO50 4:2:0 - PAL DV, DVD, main-profile MPEG-2 4:1:1 - NTSC DV & DVCAM, DVCPRO

11. Indiana University One River Media Source File Images courtesy of Marco Solorio, One River Media

12. Indiana University MPEG-4 Apple OSX 10x (4:1:1) Images courtesy of Marco Solorio, One River Media

13. Indiana University Photo Jpeg OSX 10x (4:4:4) Images courtesy of Marco Solorio, One River Media

14. Indiana University Digital Video Basics Facts, figures, and calculations courtesy of Jerome McDonough, University of Illinois oWhy not 4:4:4 sampling? o720 x 486 resolution = 349,920 pixels per frame o349,920 pixels x 10 bits/sample x 3 samples/pixel = 10,497,600 bits per frame o10,497,600 bits/frame X 29.97 frames/second = 314,613,072 bits per second o314,613,072 bps x 3600 seconds = ~141.58 GB/hour oFor 1920 x1080 HD, more like 840 GB/hour o4:2:2 sampling drops that rate by a third with almost no perceptible difference in quality. 4:2:0 and 4:1:1 drop it in half.

15. Indiana University Basic EVIA Digital Archive Architecture

16. Annotator’s Workbench

17. AWX File Online

18. Video Annotation Online

19. Local Video Playback

20. Streaming Video Playback

21. AWB Video for Omeka

22. Indiana University Resources oOne River Media – Marco Solorio http://codecs.onerivermedia.com/ oJerome McDonough Presentation on Digital Video http://www.diglib.org/forums/fall2003/mcdonough/DLF-mcdonough- PreservationVideo_files/v3_document.htmhttp://www.diglib.org/forums/fall2003/mcdonough/DLF-mcdonough- PreservationVideo_files/v3_document.htm oDiscussion of color sampling by Adam Wilt http://www.adamwilt.com/DV-FAQ-tech.html#color_sampling oArticle on setting up a digital video workstation by Marco Solorio http://www.kenstone.net/fcp_homepage/feature_capture_card.html