Design Lessons from Deployment of On-demand Video

1
Design Lessons from Deployment of On-demand Video

• Liwei He, Anoop Gupta,
• Stephen A. White, Jonathan Grudin
• Microsoft Research

2
Introduction

• On-demand video talks are becoming commonplace
• In fact, in the long term we may have
• more online viewers than in-room viewers
• more on-demand viewers than live viewers
• This study focuses on
• Behavior of on-demand viewers
• Implications for organization and delivery of
  on-demand talks

3
Microsoft Technical Education (MSTE)

• MSTE provides internal training for Microsoft
  employees
• Live seminars
• On-demand video website
• MSTE on-demand video website (7/1997 6/1998)
• 163 talks were digitized
• User-actions are logged on the server
• 2096 individuals and 6685 sessions
• Over 115,000 records logged

4
UI for MSTE on-demand video website
Video
VCR-like controls
Slides
Table of content
5
Microsoft Technical Education (MSTE)

• MSTE provides internal training for Microsoft
  employees
• Live seminars
• On-demand video website
• MSTE on-demand video website (7/1997 6/1998)
• 163 talks were digitized
• User-actions are logged on the server
• 2096 individuals and 6685 sessions
• Over 115,000 records logged

6
Questions studied

• How long do viewers spend on each viewing
  session?
• How does a viewer spend time within a session?
• Do viewers use the table-of-content to jump
  around?

7
Most sessions tend to be short
8
Front part of the talk is watched more

• Beginning of each slide is also watched more

70


60
50
40


User count
30
20
10
0
0
10
20
30
40
50
60
70
80
90
Nth minute into the talk
9
Viewers do use table of content
10
Conclusions

• User behavior
• Most sessions are very short
• Front part are more likely to get watched
• Viewers do use the table of content to jump
  around
• Design implications for presenters of on-demand
  videos
• Use inverted-pyramid style
• Present key messages early in talk
• Present key messages early in each slide
• Use meaningful slide titles
• Reveal talk structure in slide titles

11
Work in progress

• Extend the duration of analysis
• Interview MSTE users
• Use the user access pattern to generate video
  summaries
• Read our latest results at http//www.research.mic
  rosoft.com/coet