Без темы
<<  Jetta International, Inc Johan Wolfgang von Goethe  >>
Jingyu Qiu Sr
Jingyu Qiu Sr
Agenda
Agenda
Our Vision
Our Vision
Video Conferencing Reality
Video Conferencing Reality
Our Multi-Release Approach
Our Multi-Release Approach
OCS 2007 Video Capabilities
OCS 2007 Video Capabilities
OCS 2007 Video Components
OCS 2007 Video Components
OCS 2007 Demo
OCS 2007 Demo
OCS 2007 Video Deep Dive
OCS 2007 Video Deep Dive
Video Codec
Video Codec
Video Encoding Pattern
Video Encoding Pattern
Bitstream Structure
Bitstream Structure
Artifact
Artifact
Artifact
Artifact
Artifact
Artifact
Artifact
Artifact
Encoder/Decoder Flow
Encoder/Decoder Flow
Feature Set
Feature Set
Quality In OCS 2007
Quality In OCS 2007
Usability In OCS 2007
Usability In OCS 2007
Reliability In OCS 2007
Reliability In OCS 2007
Network Resilience In OCS 2007
Network Resilience In OCS 2007
Channel Protection
Channel Protection
Forward Error Correction
Forward Error Correction
Error Concealment
Error Concealment
Error Recovery
Error Recovery
Dynamic BW Allocation
Dynamic BW Allocation
Affordability In OCS 2007
Affordability In OCS 2007
Video Conferencing
Video Conferencing
Rate Matching
Rate Matching
Multi-Party Video
Multi-Party Video
OCS 2007 Video Recap
OCS 2007 Video Recap
Interop With Tandberg
Interop With Tandberg
TANDBERG – OCS Interoperability Released solution
TANDBERG – OCS Interoperability Released solution
TANDBERG – OCS Interoperability – Roadmap Media Gateway
TANDBERG – OCS Interoperability – Roadmap Media Gateway
Interop With Polycom
Interop With Polycom
Polycom Video Components In An Office Communications Server 2007
Polycom Video Components In An Office Communications Server 2007
Three Phase Video Integration into Office Communications Server 2007
Three Phase Video Integration into Office Communications Server 2007
OCS Video Roadmap
OCS Video Roadmap
OCS Video Future
OCS Video Future
Want To Be An Expert
Want To Be An Expert
© 2008 Microsoft Corporation
© 2008 Microsoft Corporation
Appendix
Appendix
Telepresence Myth
Telepresence Myth
Telepresence Demystified
Telepresence Demystified
Do You Need Telepresence
Do You Need Telepresence

Презентация на тему: «Jingyu Qiu Sr». Автор: Dean Andrews. Файл: «Jingyu Qiu Sr.pptx». Размер zip-архива: 2555 КБ.

Jingyu Qiu Sr

содержание презентации «Jingyu Qiu Sr.pptx»
СлайдТекст
1 Jingyu Qiu Sr

Jingyu Qiu Sr

Program Manager Microsoft Corporation

OCS Video Conferencing

2 Agenda

Agenda

Our Vision OCS 2007 Feature Set OCS 2007 Video Deep Dive Interop with Tandberg and Polycom OCS Video Roadmap Q&A

3 Our Vision

Our Vision

Make video conferencing useful, usable and affordable to the mass Help people save travel, work more efficiently Help company save money and improve productivity Make the world a better place to live

4 Video Conferencing Reality

Video Conferencing Reality

Since 60’ Not meeting expectation Low quality, not useful Hard to use Low usage No ROI model Good Sign in 2007 Is the time for video conferencing coming?

5 Our Multi-Release Approach

Our Multi-Release Approach

Every release, we focus on improving

Area of Focus

OCS 2007

OCS 2008 …

High Quality Audio/Video

Ease of Use

Reliability

Network Resilience

Affordability

Face to Face Experience

6 OCS 2007 Video Capabilities

OCS 2007 Video Capabilities

Point to Point Video “calls” Escalate to Video Multi-point Video conferences Escalate to conference

7 OCS 2007 Video Components

OCS 2007 Video Components

ISDN

UC endpoints

DMZ

Remote Users

Federated Businesses

3rd Party Video Conference Endpoints

Data Audio/Video

SIP

Access Server(s)

QOE Monitoring Archiving CDR

Active Directory

Inbound Routing

Outbound Routing

Voice Mail Routing

Front-End Server(s)

Conference Server(s)

Backend SQL server

8 OCS 2007 Demo

OCS 2007 Demo

P2P Video From Outlook, OC, Audio Elevation Multiparty Video From OC, P2P Elevation, Audio Elevation Live Meeting Video Video Setup Firewall Traversal

9 OCS 2007 Video Deep Dive

OCS 2007 Video Deep Dive

Codec Quality Ease of Use Reliability Network Resilience Affordability

Area of Focus

High Quality Audio/Video

Ease of Use

Reliability

Network Resilience

Affordability

Face to Face Experience

10 Video Codec

Video Codec

VC1 Codec Used in WMV 9, next generation DVD formats, SMPTE-421M standard since April 2006 High Quality, High Compression, Low CPU RTVideo – VC1 Extension RTVideo Challenges Real Time Bandwidth Packet Loss

11 Video Encoding Pattern

Video Encoding Pattern

IBBP Video Frame Pattern Intra Frame and Inter Frame Inter Frame Dependency GOP Structure 10 Second GOP, 15 FPS System Design Around Encoding Pattern Channel Protection Active Video Switching Rate Matching

12 Bitstream Structure

Bitstream Structure

I: Intra Frame

P: Prediction Frame

B: Bidirectional Frame

SP: Super P Frame, VC1 Extension

I

I

SP

SP

P

P

P

P

B

B

B

B

B

B

B

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

I

P

B

SP

B

P

B

SP

B

P

B

I

B

P

B

13 Artifact

Artifact

A packet loss in I Frame

Causes whole I Frame Loss

Causes Artifact till next I frame

I

I

SP

SP

P

P

P

P

B

B

B

B

B

B

B

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

14 Artifact

Artifact

A packet loss in SP Frame

Causes artifact till next I frame

I

I

SP

SP

P

P

P

P

B

B

B

B

B

B

B

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

15 Artifact

Artifact

A packet loss in P Frame

Causes artifact till next I/SP frame

I

I

SP

SP

P

P

P

P

B

B

B

B

B

B

B

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

16 Artifact

Artifact

A packet loss in B Frame

Causes no artifact

I

I

SP

SP

P

P

P

P

B

B

B

B

B

B

B

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

17 Encoder/Decoder Flow

Encoder/Decoder Flow

Camera

Render

Encoder

Decoder

Crossbar

Crossbar

Crossbar

Media RTP

Network Device

Src

Sink

Network Device

Preview

Quality Controller

Quality Controller

Quality Controller

Signaling Control RTCP

Error Recovery

Rate Matching

Sender

AVMCU

Receiver

I

BW Estimate

BW Estimate

Packet Loss Report

18 Feature Set

Feature Set

Codec: RTVideo, H.263 (fall back) 1:1, Multi-party Video NAT/Firewall Traversal (no need for VPN) SRTP Video Archiving

Resolution

BW (kbps)

CPU

CIF@15

100-350

1.5G

VGA@15

400-800

Dual Core

Pano@15

100-350

Dual Core

19 Quality In OCS 2007

Quality In OCS 2007

Advanced VC1 Codec CIF, VGA Low BW Usage Wideband Audio Network Resilience Quality of Experience Quality Monitoring

20 Usability In OCS 2007

Usability In OCS 2007

One Click to Start Video Never Set BW Never Set Firewall Never Set Codec Never Set Security No Special Hardware UC Webcam

21 Reliability In OCS 2007

Reliability In OCS 2007

Reliable firewall traversal Network resilience Simple reliable hardware setup

22 Network Resilience In OCS 2007

Network Resilience In OCS 2007

Channel Protection Error Concealment Error Recovery Dynamic BW Allocation

23 Channel Protection

Channel Protection

Goal: Improve perceived video quality in a lossy network System Design Forward Error Correction Error Concealment Error Recovery Result Packet Loss Impact become un-noticable

24 Forward Error Correction

Forward Error Correction

Goal: Reduce Frame Loss Probability Design Packet Level Protection using Redundant Data Protect Key Frames Only 10% extra protection bits Result @ 1% loss network I frame loss rate: 10% -> 0.1% Artifact: 30% -> 6%

25 Error Concealment

Error Concealment

Goal: Hide Artifact Human eyes more sensitive to artifact than to short frozen video Design Share frame dependency info between sender/receiver Hide frames with impaired dependency Result Zero Artifact

26 Error Recovery

Error Recovery

Goal: Reduce Frozen Video Interval Worst: GOP(10 Sec) Design Receiver Sends Packet Loss Report Sender Resends I/SP frame Result Frozen interval < RTT time (200ms, 3 frames)

27 Dynamic BW Allocation

Dynamic BW Allocation

Cannot Predict Available BW At Beginning Dynamic BW Allocation BW Estimation Every 5 Seconds BW Allocation to Audio Video Channels Reset Encoder Bitrate QP, Frame Rate, Resolution Optimal QoE Given Available BW

28 Affordability In OCS 2007

Affordability In OCS 2007

Commodity Hardware, WinTel, Webcam, Headset Scalable AVMCU Server How to Handle Heterogeneous End Point Easy Admin, lower TCO

29 Video Conferencing

Video Conferencing

Large Multiparty Video Conf Up to 250 participants Live Meeting Can do Even More Switched Video (one video window) Active speaker switching Manual switching Rate Matching Video Archiving Client/Server side archiving

30 Rate Matching

Rate Matching

Scale Down Video Stream on low speed link in AVMCU

Remove frames without causing artifact

I

I

SP

SP

P

P

P

P

B

B

B

B

B

B

B

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

31 Multi-Party Video

Multi-Party Video

See A’s video

Firewall

B

Dominant Speaker: A

See Previous DS

AVMCU

See A’s video

Dominant Speaker Switching Manual Switching Rate Matching Error Recovery High Performant AVMCU

C

A

256K SP . . SP . . I

Error Recovery Upper Link

100M SP B P B SP B P B I

100M SP B P B SP B P B I

32 OCS 2007 Video Recap

OCS 2007 Video Recap

Area of Focus

OCS 2007

OCS 2008

High Quality Audio/Video

Ease of Use

Reliability

Network Resilience

Affordability

Face to Face Experience

33 Interop With Tandberg

Interop With Tandberg

SIP Client using H.263 or RTVC1 Video Gateway

34 TANDBERG – OCS Interoperability Released solution

TANDBERG – OCS Interoperability Released solution

Simple to deploy TANDBERG endpoints register directly to OCS TANDBERG MCU registers conferences directly with OCS User Experience Calling a TANDBERG Endpoint is the same as calling a MOC client Click a contact to joing a multi-protocol conference Multiple User Scenarios Supported Persoanl Telepresence Conference Rooms Telepresence Stutios

SIP

MOC

Exec Desktop

Board Room

Telepresence Studio

MCU

35 TANDBERG – OCS Interoperability – Roadmap Media Gateway

TANDBERG – OCS Interoperability – Roadmap Media Gateway

Enhanced Media Support RTV to H.264 Transcoding – enables HD interoperability TANDBERG HD Webcamera and MOC User Experience Same consistenet user experience

Video Communication Server

H.323 and SIP

SIP

Media Gateway

Content Server

HD MCU

Exec Desktop

36 Interop With Polycom

Interop With Polycom

SIP Client H.263 Native End Point (RTVC1)

37 Polycom Video Components In An Office Communications Server 2007

Polycom Video Components In An Office Communications Server 2007

Topology

H.323

PSTN

Office Communications Server 2007

CX700

CX200

H.323 Gateway

PSTN Gateway

CX100

Voice Gateway

Exchange Server 2007

Active Directory

Traditional PBX

Traditional Phones

38 Three Phase Video Integration into Office Communications Server 2007

Three Phase Video Integration into Office Communications Server 2007

Phase 1 Q2/3, 08

Phase 2 Q2, 09

Phase 3 2H, 09

Seamless interoperability Point to point calling between HDX and Office Communicator Companion HDX – forked calls to OC client and HDX Meet-me conferencing with RMX

Full integration and manageability VC2 compliance Support for large-scale video management Federation and security

Native Interoperability Support for Microsoft’s RTVideo and RTAudio codec’s Aligned with Microsoft’s Wave 14 release of OCS 2007

38

39 OCS Video Roadmap

OCS Video Roadmap

Area of Focus

OCS 2007

Next OCS

High Quality Audio/Video

Ease of Use

Reliability

Network Resilience

Affordability

Face to Face Experience

40 OCS Video Future

OCS Video Future

VGA/HD 720P 1:1 and Multi-party Mixed Video (CIF/VGA/HD) Capability Negotiation Partner/EcoSystem Play $300 HD Webcam From Tandberg Tandberg/Polycom Signs RTVideo Porting Kit Interop With VTC System

41 Want To Be An Expert

Want To Be An Expert

http://technet.microsoft.com/office/ocs/

Get in depth and up to date technical resources from TechNet Leverage the variety of Webcasts and Virtual Labs available Be part of the OCS Product Dialogue Join the OCS Community

42 © 2008 Microsoft Corporation

© 2008 Microsoft Corporation

All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

43 Appendix

Appendix

44 Telepresence Myth

Telepresence Myth

Immersive Experience Life size image Better Eye Gaze Spatial Audio High Quality Audio/Video Ease of Use Reliability Feels like Private Jet

45 Telepresence Demystified

Telepresence Demystified

Immersive Experience Camera Angle, Display Size, Spatial Audio, Position Camera on top, Geometry High Quality Audio/Video HD Audio Video, Low Latency, jitter, lip sync Ease of Use Hide technology from UI Reliability: Dedicated Network, Dedicated Support Feels like Private Jet – Costs Like one too

46 Do You Need Telepresence

Do You Need Telepresence

Yes, your CEO asked for it Private Jet in VTC For the rest of us HD Camera on top of screen Full screen video on a larger screen Quad Core Machine Good lighting Good Microphone Good speaker $3000 price tag

«Jingyu Qiu Sr»
http://900igr.net/prezentacija/anglijskij-jazyk/jingyu-qiu-sr-113726.html
cсылка на страницу
Урок

Английский язык

29 тем
Слайды