Windows Media Technologies

CIS454 GROUP 5

Wen tsyi Lee

Feng Jiang

Gene Li

David Lisberg

Modules Introduction The Windows Media Encoder Encoding Techniques The Windows Media Server Server Security Issues Logging and Server Performance Information Windows Media Performance Tool Windows Media Load Simulator Multicasting Load Balancing Introduction

Introduction Windows Media Technologies is an innovative

digital media platform that provides end users with unmatched audio and video quality.

Windows Media Technologies also provides the emerging streaming media industry with the tools to develop powerful applications, to create high-quality multimedia content, and to reliably distribute their content.

Features of Windows Media

Highest quality audio Fast video encoding Windows Media On-Demand Producer Intelligent Streaming Scalable to Full Screen

Features of Windows Media (Continue)

Advanced Compression Technologies Easy Internet Radio Distribution Integrated with other Microsoft Products Digital Rights Management Microsoft® PowerPoint® 2000 Presentation

Broadcasting

Windows Media Components

Microsoft® Windows Media™ Tools Windows Multimedia formats WAV & AVE, Apple QuickTime

format, Internet music format MP3, Advanced Streaming Format (ASF)

Windows Media™ Encode Windows Media™ Author

Microsoft® Windows Media™ Services Microsoft® Windows NT™ Server

Microsoft® Windows Media™ Player

Windows Media Services

Windows Media Unicast service Windows Media Station service Windows Media Program service Windows Media Monitor service

Windows Media Player

Play audio and video in most popular formats Read and perform commands scripted in an .asx

(ASF Stream Redirector) file Receive script commands, markers, and

metadata, such as clip title, author, and copyright Render Windows Media broadcasts and on-

demand content for viewing live news updates on the Internet

Play movie clips and music videos on a Web site

Windows Media Rights Manager

Packaging Distribution License acquisition Piracy and security

The Microsoft Media Service Protocol Windows Media Technologies uses an

application –level protocol called Microsoft Media Server (MMS)

UDP (User Datagram Protocol) Connectionless, transport-layer protocol,

ideal for real-time media TCP (Transmission Control Protocol)

Dominant Internet transport-layer protocol, firewall problem

HTTP (Hypertext Transfer Protocol) Application-layer protocol, not designed for

streaming media, but has no firewall problem

The Windows Media Encoder

Window Media Encoder compresses digitized media files that can be AVI, MP3, WAV format, and converts them to the ASF format used by Windows Media Player.

Computer Hardware Configurations Selecting a CPU

At least Pentium II Recommended for Pentium III

Adding Memory 64 megabytes if optimal for encoding How to make sure the system isn’t paging to disk How to check available memory and add

Memory\Available Bytes Counter Adding Disk Drives

Can be bottleneck for encoding rate SCSI – encoding speeds of 300 to 500 Kbps Consider RAID Level 0 disk arrays for faster rates

Computer Hardware Configurations – Con’t Selecting an Operating System

Windows Media Encoder can run on both Windows 2000 Professional and Windows 2000 Server

Professional is recommended Selecting a Video Capture Card

Consult the “Windows Media Hardware Providers” Web Page

http://www.microsoft.com/Windows/windowsmedia/

Selecting a Sound Card Consult the Windows Hardware Compatibility List

for Sound Card http://www.microsoft.com/hcl/default.asp

Encoding Techniques

Encoding Multiple Audio Streams Example: encoding different radio stations to

be broadcast online CPU - Pentium III Sound Card - single slot with multiple ports

Encoding Multi-Bandwidth Video Streams Multi-Data rate Encoding Intelligent Transmission Video Playback Enhancement Filter

Automated Encoding Means the encoder starts automatically when

the system boots and someone logs one How to create shortcut

Performance Tuning the Server•Disabling extraneous services

•Minimizing memory

•Setting registry keys

•Using the latest NIC driver

Disabling Extraneous Services•License logging

•Print spooler

•Microsoft Internet Information Service

- If IIS must run on same machine, disable content indexer and FTP service

•In general, shut down all services not needed

Setting Registry Keys

•MaxConnectionPerSecondKeyDefault is 25For high-end server it should be 75-100

•MaxUserPortUppermost port for outbound connectionsValues are between 1024 and 5000Typical setting is OxFFFE

Using Latest NIC Drivers•Significant increases can be seen from updating to current drivers

Authentication with Unicast Transmissions

•Anonymous (default)

•Basic authentication

Anonymous Authentication•Default account name is Netshow Services

•Access can be denied to specific files by denying access to Netshow Services

Basic Authentication•Client is prompted for a plain text user name

and password

Windows Media Rights Manager

•Songs, videos, and other media are delivered encrypted

•End users need a separate license to decrypt

Logging and Server Performance Information

•The Windows Media Administrator Log Files

•The Windows Media Performance Tool

•The Windows Media Load Simulator

Windows Media Administrator Logs•Logs information about events and about clients

connected to unicast publishing points

•Log shows client’s ID, IP address, port number, status, and name of file being streamed

•Disabled by default

Source: <http://www.microsoft.com/WINDOWS2000/library/operations/streamingmedia/wmtbest.asp>

Windows Media Performance Tool•Part of Windows 2000 administrative tools

•Includes counters relevant to streaming media

•Late Reads counter is very important-if value is not zero, disk response is deteriorating

Source: <http://www.microsoft.com/WINDOWS2000/library/operations/streamingmedia/wmtbest.asp>

Windows Media Load Simulator

• Included in Windows 2000 resource kit

• Runs on a client machine and test the capacity of the media server by simulating a large number of requests for streaming media

• Can automatically alert administrators to performance deterioration

Source: <http://www.microsoft.com/WINDOWS2000/library/operations/streamingmedia/wmtbest.asp>

Multicasting

Is a one-to-many form of transmission that sends data to a group of users.

Save network bandwidth

.nsc file Configuration file containing all the

information, such as IP address and port number, that is necessary for joining a multicast transmission.

Distribution of the .nsc file is controlled by administrator, stops unauthorized users form listening to a transmission.

Defining a Station

Configuring a Multicast Station Use QuickStart Wizard Create a new station

Source: <http://www.microsoft.com/WINDOWS2000/library/operations/streamingmedia/wmtbest.asp>

Specify a program and Stream Name

Source: <http://www.microsoft.com/WINDOWS2000/library/operations/streamingmedia/wmtbest.asp>

Specify a Source for the Stream Object

Source: <http://www.microsoft.com/WINDOWS2000/library/operations/streamingmedia/wmtbest.asp>

Specify a Source URL for the Stream Object

Source: <http://www.microsoft.com/WINDOWS2000/library/operations/streamingmedia/wmtbest.asp>

Specify Stream Format Information

Source: <http://www.microsoft.com/WINDOWS2000/library/operations/streamingmedia/wmtbest.asp>

Specify Path for .nsc file

Source: <http://www.microsoft.com/WINDOWS2000/library/operations/streamingmedia/wmtbest.asp>

Station information file URL

Source: <http://www.microsoft.com/WINDOWS2000/library/operations/streamingmedia/wmtbest.asp>

Select Publishing method

Source: <http://www.microsoft.com/WINDOWS2000/library/operations/streamingmedia/wmtbest.asp>

Ready to Publish

Source: <http://www.microsoft.com/WINDOWS2000/library/operations/streamingmedia/wmtbest.asp>

Troubleshooting Multicast Transmissions Checking the files Checking Statistics Keeping Track of IGMP Versions Isolating the Problem The Network Monitor

Checking the Files

.asf and .nsc files are accessible, with no errors.

.asf files must be specified Use Windows Media Administrator,

Export, to configure .asf and .nsc files

Check Statistics

Protocal Packets Rocovered Packets Lost

Source: <http://www.microsoft.com/WINDOWS2000/library/operations/streamingmedia/wmtbest.asp>

Keeping Track of IGMP Versions

Operating System Version of IGMP

Windows 95 Version 1

Windows NT® 4.0 with SP3 or earlier Version 1

Windows 98 Version 2

Windows NT 4.0 with SP4 or SP5 Version 2

Windows 2000 Version 2

Isolating the Problem

Source: <http://www.microsoft.com/WINDOWS2000/library/operations/streamingmedia/wmtbest.asp>

The Network Monitor

Available with System Management Server

Allows user to look a packets on the Network

Capture filters

Source: <http://www.microsoft.com/WINDOWS2000/library/operations/streamingmedia/wmtbest.asp>

Summary Microsoft Windows Media™ Technologies is

distributed as part of the Microsoft Windows 2000 operating system. It allows you to create, distribute, and play streaming media files.

This presentation has demonstrated why someone would want to use Windows Media Server and how Windows Media Server can be implemented.

References http://www.microsoft.com/WINDOWS2000/library/operations/

streamingmedia/wmtbest.asp http://msdn.microsoft.com/workshop/imedia/windowsmedia/

server/admin.asp http://www.602pro.com/lite/support/mediaplayer.html http://www.inktomi.com/new/press/windows.html