windows media technologies cis454 group 5 wen tsyi lee feng jiang gene li david lisberg
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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
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