1. Name: Title:
RADVISION Video Solution
Analysis and Measurement
Elie Cohen Oct 2010Date:Director, Product Management

2. Increased user satisfaction
The visual sense is extremely important
Video services are becoming a popular mode of
communication at a reasonable price
The Importance of Video Quality

3. What Types of Applications and Products Can Be Tested?
Voice over IPVideo Web Collaboration
Video Conferencing and
TelePresence
Voice & Video
Endpoint
MCU, Gateway
Softswitch
SIP Server ,…
Video Mobile
SIP, H.323, 3G-324M,
IMS, Media
Protocol

4. Network conditions
Source of the video
Compression level
Image complexity
Content type
Network
Parameters
Video
Parameters
Content
Parameters
Content
Type
Image
Parameters
Factors That Affect Video Quality
Video Quality Score

5. RADVISION’s Video Quality Solution
Video Quality
SDK
Audio &
Video Quality
Monitoring
VoIP
Testing Suite
VQ SDK
Video Quality
Standalone
Testing Suite
ProLab

6. RADVISION’s IPR
• Proprietary advanced VQ technology
• VQ cause analysis and optimization
• Human vision database
• Unique synchronization algorithm
• 17 years of experience in video conferencing
• Leading Video over IP core technology
• Compliant with leading standards
• Vital role in standardization
Video Quality - innovative and unique research
• VQ databases and data analysis
• VQ assessment techniques
• VQ formulas and coefficients
• Stream analysis and synchronization
• Joint research with academia
• Image processing
• Packet loss analysis
• VQ No-Reference algorithms
RADVISION’s Video Quality (VQ)

7. Video Quality
Innovative Research

8. Video Quality Measurement Methodologies
“Full-Reference”
Offline
“No Reference”
Real-time
Video Quality

9. Mean Opinion Score (MOS):
The arithmetic mean of all individual observations,
ranging from 1 (Bad) to 5 (Excellent).
MOS Quality Impairment:
Excellent
Good
Fair
Poor
Bad
What is MOS ?
5
4
3
2
1

10. Network
Parameters
Codec
Parameters Payload
Objective Subjective Content
Network
Quality1 Codec
Quality2
Image
Quality3
RADVISION VQ Techniques

11. Packet Loss Detector
Video packet loss concealment detection based on image content
Innovative research presented at the 16th European Signal
Processing Conference (EUSIPCO2008)
Over 90% detection precision

12. Human Vision Database
Video Quality Surveys
Unprecedented in scope (x1000 inputs)
Variable contents: video conferences, streaming, motion pictures…
Variable artifacts: blockiness, packet loss, blurriness…
Worldwide, different viewing preferences
Guarantees high correlation with human perception
Database enhanced with state-of-the-art RV Full-Reference algorithms

13. Quality score based on:
- Network parameters (objective and subjective)
- Compression level
- Packet loss propagation
- Reason for Video Quality degradation;
optimization methods
Objective VMOS: 4.4
RV VMOS: 4.4
Figure A: No Packet loss Figure B: Packet loss Figure C: Propagation of Packet loss
Objective VMOS: 2.4
RV VMOS: 2.4
Objective VMOS: 4.4
RV VMOS: 2.4
RADVISION’s
Advanced Video Quality Techniques
- Bit-rate and frame-rate fluctuation as an indication of quality
- Dynamism level of the video

14. RADVISION’s Synchronization Algorithm
Full-reference allows you to perform a Video Quality analysis
and compare the original video sequence to a degraded one
Unique adaptive algorithm to synchronize original  degraded
Different frame rates
Resizing
Partial picture, picture in picture
Compression artifacts
Black period
Welcome frames
Logo additions
Title additions

15. Video Quality Solution

16. RADVISION’s VQ SDK
The RADVISION VQ Online Toolkit is a building block
for the development of a wide range of video applications
that are used to:
Measure Video Quality in real-time
Perform cause analysis
Offer quality improvement options

17. Measure and analyze Audio and Video Quality
Cause analysis
Quality improvement options
RADVISION’s VQ Monitor

18. Video Quality Monitor – Architecture
CAPTURE
NETWORK

19. ProLab - IMS, 3G and VoIP
Testing Architecture
Terminal Server Media
Emulation
Media
Quality
 SIP
 H.323
 IMS
 3G-324M
 SIP Server
 IMS Server
 Gatekeeper
 Media Emulation
 Network
Impairment
 Media Viewer
 Audio & Video
Playback
 Audio MOS
Ref-based (PESQ)
 Audio MOS
No-reference
 Video MOS
Full-reference
 Video MOS
No-reference,
Passive
Automation
 XML/API
 Test Scheduler
 Test Result
Analysis
 Built-in Scripts
ProLab

20. Script Driven
• Test Scripts: Short test programs
composed of dedicated, protocol-
specific commands
• Advanced tool for establishing
elaborate and complex test scenarios
• Built-in test cases
• Built-in pre-recorded media
Canned
Scripts
Template
Scripting
Language
ProLab

21. Audio & Video
Test Cases
Media
Statistics
Network Errors
Simulation
Audio & Video
Quality
Automation
ProLab Testing Suite - Architecture
ProLab Testing Suite
DB

22. ProLab Test Manager
ProLab
SIP Agent
ProLab - Distributed Solution
ProLab
SIP Agent
ProLab
ProLab
SIP Agent
ProLab
SIP Agent

23. Test Automation ProLab
ProLab supports automated testing for both large-scale
operations and small to medium-size needs:
Large organizations can use XML/SOAP
Test Scheduler offers a scheduling system for comprehensive
automated test procedures
XML/SOAP
ProLab Test
Manager
Test
Result
ProLab
Test Agent
IP
Network
Third
Party
Test
Controller
Device
Under Test

24. Signaling Emulation
Advanced signaling emulation
Media Emulation
Voice & Video
Multiple Media Viewer
DTMF RFC 2833
Media Analysis
Media Key Indicators (Packet Loss, Jitter, MOS, ...)
Network Error Indicator
Advanced Signaling
Emulation
Real Media
Emulation
(voice & Video)
Media Analysis &
Impairment Emulation
ProLab – Advanced Emulation

25. Problem Detection and Solution
Alerts on problems (< threshold) - alarms
Tips offered for problem solving
Real-time QoE Monitoring
QoE Reports
QoE trends analysis
Actively detects and
solves problems
Controls your
infrastructure!
Tunes and optimizes
your system!
Use Cases

26. Ensures high quality end-user experience
Automates, isolates and analyzes video
problems
Offers insight into user experience through
reports, diagnostics and troubleshooting
Unique video algorithm considers end-
user experience and objective parameters
Reduces testing time
Benefits
Complete Audio & Video
Quality Solution
ProLab

27. RV Monitoring Customers Worldwide

28. Where to Find Us?
Corporate site Community Blogs Newsletter twitter
This seminar, online:
http://community.radvision.com/page/futurecomm-2010/

29. Name: Title:Elie Cohen
elic@radvision.com
Director, Product Management
Thank You!