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Apple QuickTime Streaming Server Darwin Streaming Server manual The Total Streaming Solution

Models: QuickTime Streaming Server Darwin Streaming Server

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Relaying Streamed Media

Relaying Streamed Media

QuickTime Streaming Server or Darwin Streaming Server can be conﬁgured as a relay. A relay listens to an incoming stream and then forwards that stream to one or more destinations. A relay can reduce Internet bandwidth consumption. Relays can be useful in special broadcast situations, especially if numerous viewers in different locations want to tune in.

Large organizations can often make good use of relays. For example, if a company regularly broadcasts a quarterly presentation from the CEO, that broadcast can be relayed from headquarters to branch ofﬁces.

Broadcaster

Destination

Clients

Internet

Relay

DestinationClients

Company headquarters

Branch offices

The CEO’s presentation is captured live with a video camera. The audio and video from the camera are encoded using QuickTime Broadcaster on a Mac OS X computer. A Mac OS X Server computer with QuickTime Streaming Server software acts as the relay computer and relays the broadcast of the CEO’s presentation over the Internet to destination computers serving the company’s branch ofﬁces. Employees of the company using client computers tune in to the destination computers to hear and watch the CEO’s presentation.

For more detailed information about setting up streamed media, see the appropriate topics in this manual.

The Total Streaming Solution

The QuickTime suite of products is unique in that it provides the software you need for end- to-end production, transmission, and reception of streamed media. Each product is designed from start to ﬁnish for optimum compatibility with every other component in the suite.

QuickTime Streaming 11

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Apple QuickTime Streaming Server Darwin Streaming Server manual The Total Streaming Solution, Relaying Streamed Media

Contents

QuickTime Streaming Server Darwin Streaming Server Administrator’s GuideRealAudio is a trademark of Progressive Networks, Inc K Apple Computer, Inc2002 Apple Computer, Inc. All rights reserved Adobe and PostScript are trademarks of Adobe Systems Incorporated1 Getting Started ContentsPreface QuickTime StreamingRelays MediaWorking With Connected Users Preparing AudioThe Streaming Server Computer Crashes or Is Restarted Installing SSL3 Setup Example Adding or Deleting GroupsGlossary Index Setting It Up Creating a Web Page for Easy AccessAbout Streaming Servers What Is Streaming?QuickTime Streaming 8 Preface Simple Setup for Live VideoLive Versus On-Demand Delivery QuickTime Streaming How Does Streaming Work?10 Preface Multicast Versus UnicastRelaying Streamed Media The Total Streaming SolutionThe QuickTime suite is made up of the following components QTSS and DSS 4.1 added these features For More Information14 Preface Getting Started Setup OverviewClient Computer Requirements Hardware and SoftwareApple recommends Setting Up Your Streaming Server The streaming server is now active and ready to stream media Testing Your Setupwhere hostname is the host name or IP address of your server 8 Click FinishPage Managing Your Streaming Server User InterfaceWorking With Streaming Server Admin 22 Chapter Starting or Stopping Streaming ServiceViewing Streaming Status Working With Connected Users2 Make the changes you want and click Save Changes m To see the general settings, click General Settings You can view and change port settings in Streaming Server Admin Other supported platforms /var/streaming/Logs Error Log Error.logStreaming MP3 requests log mp3access.log Streaming admin server requests log streamingadminserver.logOther supported platforms /var/streaming/Playlists/playlistname MediaAbout Instant-On Streaming Preparing Prerecorded MediaBe sure to copy the ﬁles into the directory you speciﬁed for streaming 2 Export the ﬁle by choosing Export from the File menu New ﬁle with only hint tracks myﬁle.movOriginal, non-hinted ﬁle myﬁle.avi 1 Open QuickTime Player on a Mac OS X, Mac OS, or Windows computer 3 Copy the SDP ﬁle to your streaming server computer Setting Up a Web Page With Streamed Media A PLS ﬁle uses this format pls ﬁles using the user’s MP3 player automaticallyrtsptext rtsp//my.streamingserver.com/sample.mov The M3U ﬁle contains a single line of text in this formatPlaylists To stop broadcasting a playlist, click the Stop button 36 Chapter Changing a PlaylistDeleting a Playlist 3 If the playlist is running, click the Stop button RelaysTo see the Relay Settings pane, click Relay Settings Working With Relay Settings4 Complete the ﬁelds for Destination 1 Click Relay Settings 2 Click New Relay or Edit Default Relay6 Click Save Changes to add the source to your relay settings Setting Up RelaysSecurity Creating an Access File Controlling Access to Streamed MediaSave the access ﬁle as plain text not .rtf or any other ﬁle format 2 Enter a password for the user and reenter it when prompted To create a user account on the streaming server Installing SSLwhere someUserName is a broadcaster user name of your choosing Problems m Check the error log m Make sure users have the correct URL m Turn off other servicesUsers See Error Messages While Streaming Media m Reduce the maximum number of connections or the maximum throughput48 Chapter You’re Having Problems With PlaylistsUsers Can’t See Live Streamed Media tells the server to bind to the local IP address Advanced1 Log in to the server as an administrator This section answers questions raised by more advanced users\Program Files\Darwin Streaming Server\streamingserver.xml Library/QuickTimeStreaming/Config/streamingserver.xmlssl=0 bind=IP address to bind to PREF NAME=bindipaddr0PREFTo kill and restart a process usr/sbin/streamingadminserver.plTo kill the QuickTime Streaming Server QTSS processes To get QTSS to re-read its preferences 52 ChapterThis will produce the following Page Streaming Presentations-Live and On Demand Setup Example56 Chapter The streaming setup in this example, shown above, has these featuresStep 1 Prepare the Location Setting It UpStep 2 Prepare the Network Can the server computer be dedicated solely to streaming? Step 3 Set Up Your Streaming ServerHow much random access memory RAM is needed? dataRateInBits / 8 bits * timeInSeconds = file sizeExample for a one-hour 300-Kbps stream 2 Click the “Streaming on Port 80” checkbox, then click Save Changes 1 Click Port Settings in Streaming Server AdminThe Port Settings page displays m sturdy tripod on which to mount the camera m portable lighting kit For the example setup, the following items are neededStep 4 Set Up for a Live Webcast m good-quality DV cameraHere are other desirable features Step 5 Set Up Broadcaster Creating a Web Page for Easy Access Archiving the Live Presentation Shooting the Live Presentation8 Click Import again when you want to stop importing Page Glossary byte Eight bits rules for linking and exchanging ﬁles on a network instructions to a musical synthesizer N, O Page tween track A track that modiﬁes the display of other tracks 76 Glossary Index stopping unable to connect to 47 viewing browsers. See web browsers “Error Log” setting 26 errors killing QTSS processes symbolic links within 52-53 “Media Directory” setting 24 media ﬁles MPEG-4 See also streaming servers 84 Index passwords. See passwords proxies“Sequential Looped” mode 34, 49 “Sequential” mode SSL Secure Sockets Layer 24, 43 SSL certiﬁcatevalid-user tag 41 video See also errors