RealTime Services on the Internet

1
Project Overview

• Real-Time Serviceson the Internet
• EURESCOM P913-GI
• Socrates
• 14 Jan. - 31 Dec. 1999, BT, DT, FT, PT
• Hans-Detlef Schulz, DT

2
Purpose of SOCRATES
Project Overview

• Investigate the Limitations of Real-Time over the
  Internet
• Give Recommendations on Configurations that are
  suitable for Real-Time over Best-Effort Internet
• Give Recommendations on where the Introduction of
  Bandwidth Provision is necessary
• Measurements to identify the most suitable
  Technologies

3
Streaming Applications
Real-Time Applications

• Audio/Video Streaming
• Interactivity for VCR Functionality only
• Server/Client Architecture
• Audio/Video on Demand or Broadcast

4
Conversational Applications
Real-Time Applications

• Video-Telephony
• Conferencing
• High Interactivity
• Multiple Streams with different Priorities
• Point-to-Point or Multi-Point Architecture

5
Applications not considered
Real-Time Applications

• Internet Shopping
• Internet Games
• Internet Fax
• Point-to-Point IP-Telephony without Video Content

6
Aspects for Consideration of SOCRATES
Approach

• Packet Loss
• Packet Delay
• Delay Jitter
• Varying Throughput
• End-to-End Bandwidth
• Subjective Reception

7
Targets (1)
Approach

• Classification of
• Applications and Products
• Scenarios
• Intended Use

8
Targets (2)
Approach

• Based on the Classifications Recommendations are
  given
• for which Types of Products, Scenarios, and Usage
  the Best-Effort Internet is sufficient
• how much Bandwidth Control needs to be introduced
  based on the kind of Technology that is used

9
Approach
Approach

• From Best Effort ..
• Existing Internet
• Reception Control at Receiver
• Feedback to Sender
• Bandwidth Adaptation
• .. to Bandwidth Control
• Intranet and Connection to ISP
• Mapping between IP and Network
• Different Protocols

10
Deliverable 1 Road-Map
Approach

• Internet Technology
• Real-Time Requirements
• Standards
• Market Trends
• Commercial Products
• Strategies for the Trials

11
Deliverable 2Recommendations and Solutions
Approach

• Measurement Technology
• Classification of Products, Scenarios, and Usage
• Either where Best-Effort Internet is sufficient
• or where Introduction of Bandwidth Control is
  required

12
Deliverable 1 Road-Map
Road-Map
13
Considered Standards
Road-Map

• IETF
• IPv6, RFC 1883
• RTP/RTCP, RFC 1889
• RSVP, RFC 2205-2209
• RTSP, RFC 2326
• SDP, RFC 2327

• ITU
• T.120
• H.323

• ISO
• MPEG

• Proprietary Solutions e.g.
• RealNetworks System G2
• Apple QuickTime
• MS Advanced Streaming Format (ASF)

14
Market Trends
Road-Map

• Hardware Technologies
• Software Technologies
• Politics
• Company Strategies
• User Behavior
• Standardization Bodies

15
Typical Streaming Products
Road-Map

• RealNetworks RealAudio/RealVideo
• Microsoft Media Technologies
• Xing Technology StreamWorks
• VDO Live
• Apple QuickTime
• Cisco IP/TV
• DT Music-on-Demand
• Oracle iTV (Oracle Video Server)

16
Typical Conversational Products
Road-Map

• Microsoft NetMeeting
• WhitePine CU-SeeMe
• VocalTec Internet Phone
• VDO Phone
• NetSpeak WebPhone
• Intel Internet Video Phone
• VIC/VAT

17
Templates (e.g. VDOLive)
Road-Map

• Stream Types Audio Video
• Supported OS
• VDOLive Player Windows 95/98, Windows NT, MacOS
• VDOLive Server Windows NT 4.0, Solaris 2.4
• VDOLive Tools Windows 95/98, Windows NT, MacOS
• Codecs
• Audio G.723, G.728, G.711
• Video H.263, H.261
• Min. Bandwidth 14.4 Kbps
• Max Bandwidth 512 Kbps
• Delivery Methods UDP, HTTP
• Firewall Support Yes

• Client Features
• Standalone Player
• Browser Plug-In
• ActiveX Control
• Stream Feeds
• From Server stored Files
• Broadcast Live Streams
• Direct-to-Disk Streaming
• Compliance with Standards
• IP Level IETFs UDP and HTTP
• Codec Level G.723, G.728, G.711, H.263, H.261
• Price
• VDO Player free
• VDO Server US (2000-3000)
• VDO Tools included with VDO Server

18
Streaming Bandwidth Requirements
Road-Map
2048
0
28.8
56
128
512
Kbps
RealNetwork
MS Media NetShow
Xing StreamWorks
VDOLive
Apple QuickTime
Cisco IP/TV
DT MoD
Oracle iTV
19
Conversational Bandwidth Requirements
Road-Map
2048
0
28.8
56
128
512
Kbps
MS NetMeeting
WhitePine CU-SeeMe
VocalTec IPhone
VDOPhone
NetSpeak WebPhone
Intel Internet Video Phone
VIC/VAT
20
Considered Products
Road-Map

• Streaming Products
• RealNetworks RealVideo
• Microsoft Media Technologies
• Cisco IP/TV
• DT Music-on-Demand
• Conversational Products
• Microsoft NetMeeting
• WhitePine CU-SeeMe
• VIC/VAT
• One hardware-oriented Product

21
Road-Map for Current Real-Time Services over the
Internet
Road-Map

• Positive Feedback
• Consideration for Publication
• Available in the Project FTP Space/projects-work
  space/P900-series/P913/Deliverables/D1