1. Multimedia Workshop
Video Streaming & Video
Conferencing

2. Multimedia Team
• Seán O’Brien
• John Lyons
• Justin Hourigan
multimedia@heanet.ie

3. Agenda
• Video Conferencing Concepts
• H323 Elements
• HEAnet H323 Services
• Video Streaming Concepts
• Windows Media
• Streaming Network
• Multicast Streaming
• Upcoming Video Services Projects

4. Video Conferencing
• Audio/Video/Data Interaction between remote
sites.

5. Uses of Videoconferencing
• Meetings
• Conferences (Remote presentation)
• Distance Learning
• Music Classes
• Lifelong learning
• Employee Orientation
• Training
• Interviews

6. Video Conferencing
• H323
• SIP
• Netmeeting
• Conference XP
• Skype
• VRVS / Access Grid

7. Types of Video conferencing
terminals

8. H323 Backend
• Gatekeeper
– All endpoints register to this
– All services from MCU and Gateway Register here
– Calls are routed between endpoints and services
• Gateway
– Primary Rate BRI (30 channels)
– +353 1 4490889
• Multipoint Controller Unit
– Up to 70 endpoints (bandwidth dependant
– To be upgraded soon

9. HEAnet Conferencing (Centralized) Services
H.323 Client H.323 Client
IP V IP
id eo Co to IS
Co nfe DN
n fe rne V
re n
ce nc ide
Ca eC o
ll all
IP Network
H.323
Gatekeeper HEAnet PoP
H.323
MCU
H.323 to Streaming
GATEWAY
H.323
GATEWAY
ISDN Public Network
POTS / GSM
H.320 Client
1 2 3 1 2 3 1 2 3
4 5 6 4 5 6 4 5 6
7 8 9 7 8 9 7 8 9
* 8 # * 8 # * 8 #

10. Video Streaming
• Live Streaming
• Video On-Demand

11. Uses of Video Streaming
• Special Events
• Conferences (Remote Attendance)
• Distance Lecturing
• Remote Monitoring
• Academic Content Distribution
• Student Produced Content Distribution

12. Video Streaming
• Windows Media.
• Real.
• QuickTime
• MPEG 2/4.

13. HEAnet Streaming Services

14. IP Multicast
Unicast Multicast
• Less bandwidth required
• Server load decreased
• Networking load decreased
• Does require network to be multicast aware

15. IP Multicast
• Multicast can be used for both video conferencing and
video streaming
• VLC, Windows media & Real player all support IP
multicast
• Multicast is particularly useful for high bandwidth
streams which would saturate a link using unicast
• HEAnet planning to provide future streaming events &
terrestrial streaming via both multicast and unicast
• BBC streams currently available via multicast

16. IP Multicast

17. Upgraded and future services
• Streaming servers upgraded
• MP4 and QuickTime streaming
• Streaming of terrestrial television and radio
stations

18. Automating Video Streaming
• Web interface
• Uploading, management and meta-tagging of
content
• Creation of live publishing points

19. Questions?
• If you wish to contact us:
– Email : multimedia@heanet.ie
– Phone: 01 6609040
– Video Conference: 0035301101006
– Video Conference: 193.1.31.215