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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 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 highquality 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 Microsoft® Windows Media™ Services Windows Multimedia formats WAV & AVE, Apple QuickTime format, Internet music format MP3, Advanced Streaming Format (ASF) Windows Media™ Encode Windows Media™ Author 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 ondemand 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/windows media/ 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 •MaxConnectionPerSecondKey Default is 25 For high-end server it should be 75-100 •MaxUserPort Uppermost port for outbound connections Values are between 1024 and 5000 Typical 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 Defining a Station .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. 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/strea mingmedia/wmtbest.asp http://msdn.microsoft.com/workshop/imedia/windowsmedia/serve r/admin.asp http://www.602pro.com/lite/support/mediaplayer.html http://www.inktomi.com/new/press/windows.html