REALPRODUCER PLUS™ USER’S GUIDE
`Version G2 for UNIX®
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`BTN0007406
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`NEULION 1003
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`Information in this document is subject to change without notice. Companies, names, and data used in
`examples herein are fictitious unless otherwise noted. No part of this document may be reproduced or
`transmitted in any form or by any means, electronic or mechanical, for any purpose, without the express written
`permission of RealNetworks, Inc.
`
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`
`RealAudio, RealVideo, and RealPlayer are registered trademarks of RealNetworks, Inc.
`The Real logo, RealServer, RealPlayer Plus, RealText, RealPix, RealAudio Encoder, RealVideo Encoder,
`RealEncoder, RealPublisher, RealProducer, RealProducer Plus, RealProducer Pro, SureStream, RealBroadcast
`Network, and RealSystem are trademarks of RealNetworks, Inc.
`RealFlash is a trademark of Macromedia, Inc. and RealNetworks, Inc.
`Macromedia is a registered trademark and Flash and Shockwave are trademarks of Macromedia, Inc.
`STiNG is a trademark of Iterated Systems, Inc.
`ACELP-NET codec used under license from Université de Sherbrooke. Sipro Lab Télécom, Inc. Copyright ©1994-
`1997. All rights reserved.
`DolbyNet is a trademark of Dolby Laboratories, Inc.
`Dolby Digital AC-3 audio system manufactured under license from Dolby Laboratories.
`Netscape and Netscape Navigator are registered trademarks of Netscape Communications Corporation.
`Pentium is a registered trademark and MMX and the Intel Optimizer Logo are trademarks of Intel Corporation.
`Linux is a trademark of Linus Torvalds.
`Tru64 is a trademark of Compaq Computer Corporation.
`UNIX is a registered trademark in the United States and other countries licensed exclusively through X/Open
`Company Ltd.
`Other product and corporate names may be trademarks or registered trademarks of other companies. They are
`used for explanation only, with no intent to infringe.
`
`RealNetworks, Inc.
`1111 Third Avenue, Suite 2900
`Seattle, WA 98101 USA
`
`http://www.real.com
`
`BTN0007407
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`CONTENTS
`
`1
`
`2
`
`3
`
`INTRODUCTION TO REALPRODUCER PLUS
`New Features for G2.............................................................. 1
`About This Manual ............................................................... 2
`For More Information............................................................ 2
`
`1
`
`INSTALLING REALPRODUCER PLUS
`How to Install ....................................................................... 3
`System Requirements ............................................................ 4
`Linux ................................................................................ 4
`Compaq Tru64 UNIX ........................................................ 5
`
`3
`
`7
`
`USING REALPRODUCER PLUS
`What is Streaming Media?..................................................... 7
`The RealProducer Plus Main Window..................................... 7
`Creating Streaming Media ..................................................... 9
`Recording from Media Files ............................................... 9
`Recording from Media Devices........................................... 9
`Broadcasting Live Content................................................. 9
`Using the New Session Dialog............................................ 9
`About Target Audiences .......................................................12
`About SureStream................................................................12
`Monitoring Recording Statistics ............................................13
`Monitoring Real Time Performance...................................15
`General Statistics .............................................................15
`Audio Statistics................................................................16
`Video Statistics ................................................................17
`
`19
`
`CUSTOMIZING RECORDING OPTIONS
`Changing RealProducer Plus Preferences................................19
`General Preferences..........................................................19
`Copy Protection...........................................................20
`Temporary Storage Directory ........................................21
`SureStream Preferences ....................................................21
`Player Compatibility.....................................................22
`Emphasize Audio or Video............................................23
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` Contents
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`RealProducer Plus User’s Guide
`
`RealPlayer Preferences ......................................................23
`Automation Preferences ...................................................25
`Customizing Target Audience Settings...................................26
`Settings for Video Clips ....................................................26
`Settings for Audio-Only Clips............................................30
`Changing Audio and Video Capture Settings .........................32
` Selecting an Audio Card ..................................................32
`Video Capture Settings.....................................................33
`
`35
`
`RECORDING TIPS
`Improving RealProducer Plus Performance ............................35
`Multiple Streams..............................................................35
`Disabling Viewers.............................................................35
`Producing High-Quality Audio..............................................36
`General Audio Tips ..........................................................36
`Audio Sampling Rates ......................................................37
`Using the Audio Level Meter .............................................37
`Producing High-Quality Video ..............................................37
`Recommended Video Types..............................................37
`QuickTime Files (Linux only).........................................37
`Live Video....................................................................38
`Sizing the Image...............................................................38
`Cropping the Image .........................................................38
`
`41
`
`USING THE COMMAND LINE
`Command Line Description..................................................41
`Options...............................................................................42
`Examples .............................................................................44
`Settings Configuration File....................................................45
`Target Audience Values ................................................46
`Audio Codec IDs .........................................................46
`47
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`INDEX
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`INTRODUCTION TO REALPRODUCER PLUS
`
`Welcome to RealProducer Plus G2 from RealNetworks. This tool
`converts standard audio and video into streaming media clips.
`Utilizing a simple interface and customizable settings, RealProducer
`Plus is perfect for either novice or advanced content creators. Using
`RealProducer Plus, anyone can easily create streaming media from a
`variety of sources. Convert standard audio or video files, record
`directly from media devices, or use RealProducer Plus to broadcast
`and stream live content.
`
`New Features for G2
`This version of RealProducer Plus includes new features that allow you to:
`• Record for multiple audiences using SureStream™
`• Create RealMedia clips that automatically switch down to a lower
`bandwidth during network congestion
`• Create RealMedia clips compatible with older versions of RealPlayer™
`• Create improved-quality RealAudio® G2 audio output and RealVideo® G2
`with Intel® video output
`• Record live video at 30 frames per second
`
`• Use a more flexible and usable interface
`
`• Customize target audience settings
`
`• Monitor statistics during a recording session
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` Introduction to RealProducer Plus
`
`RealProducer Plus User’s Guide
`
`About This Manual
`Chapter 1: Installing RealProducer Plus explains installation procedures
`and provides information about system requirements for installing and using
`RealProducer Plus.
`Chapter 2: Using RealProducer Plus explains how to create streaming media
`from existing files, media devices, and live broadcasts. It also describes how to
`choose a target audience, how to use SureStream, and how to monitor the
`recording process.
`Chapter 3: Customizing Recording Options explains how to change
`RealProducer Plus preferences and how to modify target audience settings.
`Chapter 4: Recording Tips provides information for increasing performance
`and creating high-quality audio and video.
`Chapter 5: Using the Command Line shows you how to use the RealProducer
`Plus command line interface.
`
`For More Information
`For additional information about using streaming media effectively and how
`to create multimedia presentations with your clips, refer to the RealSystem G2
`Production Guide, available for download from the RealNetworks Web site at:
`• http://service.real.com/help/library/index.html
`For technical support with RealSystem G2, please fill out the form at:
`
`• http://service.real.com/contact/email.htm
`The information you provide in this form will help technical support
`personnel to give you a prompt response. For general information about
`RealNetworks' technical support, visit:
`
`• http://service.real.com/help/call.html
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` Chapter 1:
`
`INSTALLING REALPRODUCER PLUS
`
`1
`
`Installing RealProducer Plus is quick and easy. You can download
`RealProducer Plus from the RealNetworks Website or install it from
`a CD-ROM. Before you begin, make sure your computer meets the
`necessary system requirements. See “System Requirements” on page
`4 for more information.
`
`How to Install
`Follow this procedure to install the product onto your computer.
`
`To install RealProducer Plus:
`
`1. Download the installation program, or insert the CD-ROM into your
`drive.
`
`2. Make sure your CD drive is mounted properly, if installing from a CD.
`
`3. Decompress and untar the download file:
`a. Change directories to the directory that contains the download file.
`b. Display the filename of the download file by entering:
`ls
`
`c. Unpack the top level distribution by entering:
`gunzip -cd <filename> | tar xvf -
`
`d. This will unpack the following files:
`install
`README
`license.txt
`realproducerplus.tar
`
`4. Start the RealProducer Plus installer by entering:
`./install
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`The installer begins by preparing your system for RealProducer Plus.
`When complete, the installer shows the Software License agreement.
`
`5. Specify the directory where you will install RealProducer Plus. For
`example, rprodplus. If this directory does not exist, you will be asked if the
`install program should create it. Enter Y.
`The install program installs all necessary programs and files.
`
`6. The install program asks a number of questions. You can enter either Y or
`N.
`
`System Requirements
`This section lists the basic hardware and software requirements needed to run
`RealProducer Plus for your specific UNIX platform.
`In addition to normal hardware and software requirements, you must possess
`any of the following if you want live capture and recording:
`
`• VHS, S-VHS, or Beta-SP video player
`
`• Digital Video Disk (DVD) player
`
`• live video camera and microphones
`
`Linux
`
`The following table lists minimum and recommended requirements for the
`Linux™ platform, depending on whether you are recording files or live input.
`
`Requirement
`Version
`
`CPU
`
`Pentium® 120
`
`File Recording - Linux Requirements
`Minimum
`Recommended
`Linux 2.0.x
`Linux 2.2.x with
`Video4linux1 installed
`Pentium II® 166 with
`MMX
`32 MB
`
`RAM
`Hard Disk space
`(software)
`Hard Disk space (data) 500 MB
`
`16 MB
`8 MB
`
`1 GB
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`Requirement
`Version
`
`CPU
`
`Live Recording - Linux Requirements
`Audio-only
`Video
`Linux 2.0.x
`Linux 2.2.x with
`Video4linux1 installed
`Pentium II® 400 MHz
`
`Pentium® 200 with
`MMX
`32 MB
`8 MB
`
`64 MB
`
`RAM
`Hard Disk space
`(software)
`Hard Disk space (data) 500 MB
`Video Card
`none
`
`1 GB
`any BT848 based video
`capture device, such as
`the Osprey™ 100
`16-bit sound card or better with OSS drivers
`installed
`
`Sound Card
`
`Additional software requirements include:
`
`• libc6
`
`• libstdc++.so.2.8
`
`Compaq Tru64 UNIX
`The following are recommended requirements for the Tru64™ (formerly DEC
`OSF 1.x) platform.
`• Alpha Station™ 500/400
`• 128 MB RAM
`
`• Tru64 4.0D (4.0E recommended)
`
`• Osprey 150 Rev C or higher video capture card (if you are recording video
`input)
`
`• Any sound card provided with your system. You also need MME 2.4.1
`multimedia drivers installed.
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` Chapter 2: USING REALPRODUCER PLUS
`
`2
`
`This chapter describes how to use RealProducer Plus to convert
`standard audio and video into streaming RealMedia. The entire
`conversion process is known as a “recording session.” Here, you will
`learn how to create a recording session from a variety of input
`sources, how to record with SureStream, and how to monitor your
`recording session.
`
`What is Streaming Media?
`RealMedia clips created by RealProducer Plus are streaming audio and video
`presentations, also known separately as RealAudio and RealVideo. Prior to
`RealMedia, one had to wait for a media file to download in order to play it.
`When you create a streaming clip, users can play it almost instantly. Plus, you
`can stream live media, enabling you to send your content directly to your
`audience.
`By streaming a clip, you are sending small packets of information over a
`connection. On the other end, the user receives the information and plays
`your media clip bit by bit. The process is almost invisible to the user, except for
`a small amount of initial buffering.
`RealProducer Plus G2 is an integral part of the RealNetworks RealSystem G2.
`RealProducer Plus creates the clips, RealServer™ sends the clips, and
`RealPlayer™ shows the clips. You can also use an Internet server to stream
`files, but you need to use a RealServer to stream live content.
`
`The RealProducer Plus Main Window
`Before you begin to create RealMedia content, let’s briefly tour the different
`components of the RealProducer Plus main window. This window is where
`you create, start, view, and stop a recording session.
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`The RealProducer Plus Main Window - Linux Version
`
`The upper section of the window is where you monitor the recording process.
`“Viewers” show you the input video and the recorded output during a
`recording session. Meanwhile, an audio level indicator gives you a visual
`representation of the audio track.
`The middle section lists all necessary information about the final RealMedia
`file. Details such as clip information, the target audience, audio format, video
`quality, and the type of stream being recorded are found here.
`On the bottom are the recording controls. These controls allow you start,
`stop, and play the current recording session.
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`Creating Streaming Media
`This section guides you through the process of creating a RealMedia clip.
`There are three main ways to create content, depending on the source of the
`input and how your audience will play your output:
`
`• convert existing audio files into RealMedia files
`
`• record RealMedia files from media capture devices
`
`• broadcast live, streaming content using a RealServer
`The following sections briefly discuss each method, then you will learn how to
`use a recording session to create your RealMedia.
`
`Recording from Media Files
`Only the following audio and video formats can be converted into RealMedia
`clips using the RealProducer Plus:
`
`• Audio (.au)
`
`• Waveform audio (.wav)
`• Uncompressed QuickTime for Windows (.mov) - Linux only
`
`Recording from Media Devices
`With RealProducer Plus, you can record from many types of media devices:
`live microphone input, live video camera input, audio tape, video tape, Digital
`Video Disks (DVD), or satellite feeds.
`Before you begin the recording session, make sure that your media device is
`properly connected and is working correctly.
`
`Broadcasting Live Content
`In addition to creating RealMedia files from your media sources, you can use
`RealProducer Plus to broadcast your live content directly over the Internet or a
`corporate LAN. You must have access to a RealServer in order to use this
`feature.
`
`Using the New Session Dialog
`The New Session dialog allows you to create RealMedia content. Below is a
`brief description of this dialog followed by instructions on how to use it.
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`There are two main sections of this dialog: the Input Source area and the
`Output area. You specify the type of source you will record in the Input Source
`area. You specify the type of RealMedia recording (file or live broadcast) in the
`Output area.
`The following procedure shows you how to use the New Session dialog and
`create all types of RealMedia content.
`
`To create RealMedia using the New Session dialog:
`
`1. Choose New Session from the File menu.
`The New Session dialog opens.
`
`2. In the Input Source section, select the source for your recording session:
`Media Device - select the media devices that you will record from: audio
`and/or video.
`
`File - enter the directory and filename for the source file, or click the
`Browse button to locate the file.
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`3. In the Output section, select what type of recording you are creating:
`RealMedia File - enter the directory and filename for the recorded file, or
`click the Save As button to choose a directory and filename.
`
`Live Broadcast - enter the name, port, username, and password of the
`RealServer that you will use for your broadcast. Plus, you must enter a
`filename that users will use to access the broadcast.
`
`4. (Optional) Select Automatically assign output filenames if you want
`RealProducer Plus to name your output for you.
`
`5. (Optional) You may also specify a filename and location for an archive of
`your broadcast. Select Archive Broadcast to File, then enter a filename.
`
`6. Click OK.
`The New Session dialog closes, returning to the RealProducer Plus main
`window.
`
`7. Enter the following information in the provided spaces. This information
`will appear in the viewer’s RealPlayer when your clip is played. You may
`leave them blank.
`Title—the title of the clip
`
`Author—the name of the clip’s creator
`
`Copyright—year and owner of the clip’s copyright
`
`8. Select the File Type, either Single Rate or SureStream. For more
`information, see “About SureStream” on page 12.
`
`9. In the Target Audience section, select the connection speed for your
`audience. You may select more than one target audience if you are
`recording with SureStream.
`
`10. In the Audio Format section, select the type of audio contained in your
`source (if any).
`
`Note
`You can only select the Stereo Music format if your
`input audio is in stereo.
`
`11. In the Video Quality section, select the type of video contained in your
`source (if any).
`
`12. Click Start to begin the recording process.
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`13. Click Stop to end the recording.
`
`About Target Audiences
`Whenever you create a RealMedia file or broadcast RealMedia content, you
`should always keep in mind the connection speed of your audience. Are they
`using lower-speed modems, or are they streaming your file over a high-speed
`network?
`When you select a specific target audience, you are actually specifying a
`maximum bandwidth for your RealMedia stream at the selected target
`audience. Bandwidth, measured in kilobits per second (Kbps), is the amount
`of data that can be sent through an Internet or network connection during a
`set period of time. Standard modems are commonly referred to by the
`bandwidth they are able to receive--for example, 28.8 and 56 Kbps.
`In addition to these standard audiences, you can record clips for connection
`speeds of 100 Kbps, 200 Kbps, or higher. These higher bandwidths, however,
`are generally more typical of corporate Local Area Networks (LANs) or
`entertainment-based Web sites.
`Keep in mind that the maximum bandwidth a connection is capable of is
`greater than the average bandwidth carried across it. For that reason, 28 Kbps
`connections actually only use approximately 20 Kbps, while a 56 Kbps
`connection actually uses about 34 Kbps.
`Normally, these constraints can affect your recording in many ways.
`Sometimes you have to compromise between reaching the largest audience
`(with the lowest-speed connections) and the quality of your work. Fortunately,
`RealProducer Plus enables you to record for a number of target audiences
`simultaneously using SureStream.
`
`About SureStream
`With SureStream recording you can reach the widest possible audience, and
`provide all users with the best listening and viewing experience optimized for
`their bandwidth.
`There are several advantages to using SureStream. You can create:
`
`• a single RealMedia clip recorded for multiple target audiences
`
`• a clip that will automatically switch to a lower bandwidth during poor
`network conditions
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`• a clip that is compatible with an older version of RealPlayer
`SureStream RealMedia files can combine several different streams that take
`advantage of any or all of these features.
`For example, you can record a video clip for both 28 Kbps and 56 Kbps
`audiences, and RealPlayer G2 will automatically use the correct stream based
`on the user’s connection speed. Meanwhile, a separate stream can exist for
`people who still own a RealPlayer 5.0 so that they can experience your clip. All
`streams are contained within a single RealMedia file.
`Keep in mind that if you are broadcasting SureStream files, you must use a
`RealNetworks RealServer G2.
`
`Monitoring Recording Statistics
`The Statistics window is a useful tool that allows you to monitor the
`performance of your recording session.
`You can watch general statistics, audio-only statistics, or video-only statistics.
`Plus, if you are using SureStream, statistics are shown for each stream that
`RealProducer Plus creates.
`
`To monitor recording statistics:
`
`1. After you have created a recording session, choose Statistics from the
`View menu.
`The Statistics window opens. You can return to the RealProducer Plus
`window without closing the Statistics window.
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`2. Start recording, noting the top section of the Statistics window. Here is
`where you will find basic information about your recording session such
`as:
`
`• type of input (file or media device)
`
`• where the output file or broadcast is located
`
`• audio format and video quality
`
`• type of the file (SureStream or Single Rate)
`You also find information that constantly changes, such as:
`
`• duration of the clip for live broadcasts
`
`• time remaining in the clip for static recording
`
`• real time performance (see below)
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`3.Also monitor the general, audio, and video info rmation located at the
`bottom of the Statistics window. These statistics are described later in this
`section.
`
`Monitoring Real Time Performance
`A main feature of the statistics dialog is its ability to show the performance of
`your recording session.
`This statistic compares the time it took to record your clip to the time it takes
`to play the input. For example, if your input is a 10 second video clip and it
`takes RealProducer Plus 5 seconds to process the clip, the Real Time
`Performance would be 50%.
`Any value near or above 100% means that your computer may not be able to
`process data as fast as it is received, and the session may fail due to lack of
`computing resources. During live encoding, over 100% will fail. The error
`message you receive reads “not enough resources to maintain live stream.”
`If this is the case, you can solve the problem by selecting fewer target
`audiences, or possibly by reducing the bit rate of the output if you are
`recording for a high bit rate. See “Customizing Target Audience Settings” on
`page 26 for more information.
`
`General Statistics
`These statistics give you information about each target audience selected
`during the creation of the recording session. If you are recording a Single Rate
`clip, only one stream appears. If you are using SureStream, all streams are
`listed for each target audience.
`See the table below for more details about these statistics.
`
`Statistic
`Target Audience
`Total Bit Rate
`Video Bit Rate
`Audio Bit Rate
`
`Using General Statistics
`Description
`target bit rate of your audience
`total bit rate of the clip
`bit rate of the video stream
`bit rate of the audio stream
` (Table Page 1 of 2)
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`Statistic
`Frame Rate
`Buffer Time
`
`Using General Statistics (continued)
`Description
`frames per second of video
`number of seconds needed before the
`clip can be played
`
` (Table Page 2 of 2)
`
`Audio Statistics
`These statistics give you information about the audio codecs (compression/
`decompression algorithms) used to create the audio streams. More than one
`codec appears if you are using SureStream.
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`See the table below for more details about these statistics.
`
`Statistic
`Audio Codec
`
`Frequency Response
`
`Real Time Performance
`
`Using Audio Statistics
`Description
`codec being used to convert audio
`stream
`highest frequency found in the
`recorded audio
`approximate percentage of your
`computer’s audio recording speed
`compared to real time audio playing
`speed
`
`Video Statistics
`These statistics give you information about the video codecs (compression/
`decompression algorithms) used to create the video streams. More than one
`codec appears if you are using SureStream.
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`See the table below for more details about these statistics.
`
`Statistic
`Video Codec
`Video Bit Rate
`Frame Rate
`Quality Index
`
`Real Time Performance
`
`Using Video Statistics
`Description
`codec used to convert video
`bit rate of the video
`frames per second of video
`video quality affected by your
`computer processor’s recording speed;
`100 is best, and values less than 80
`reflect reduced quality
`approximate percentage of your
`computer’s video recording speed
`compared to real time video playing
`speed
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` Chapter 3:
`
`CUSTOMIZING RECORDING OPTIONS
`
`3
`
`RealProducer Plus comes with a variety of options that allow you to
`create RealMedia suited to your needs. This chapter discusses how
`to change different recording preferences, how to adjust the settings
`for target audiences, and how to change audio and video capture
`settings.
`
`Changing RealProducer Plus Preferences
`RealProducer Plus gives you the option to modify settings that affect all
`recording sessions. This section shows you how to change general recording
`preferences, SureStream preferences, RealPlayer preferences, and automation
`preferences. You use the Preferences dialog box to make these adjustments.
`
`General Preferences
`The General page of the Preferences dialog box allows you to change copy
`protection options and the temporary storage directory used by RealProducer
`Plus.
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`CHAPTER 3: Customizing Recording Options
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`The Preferences Dialog Box - General Page
`
`Copy Protection
`By changing copy protection options, you are allowing RealPlayer Plus users to
`be able to record your RealMedia clip during playback or download your
`RealMedia clip to their hard drive.
`Selecting the Allow Recording preference allows RealPlayer Plus users the
`option of recording the playback of your RealMedia clip onto their computers.
`When your clip is played back on a RealPlayer Plus, the user can click the
`Record button and your clip is saved on the user’s machine. Deselecting this
`preference disables the Record button for RealPlayer Plus users.
`Selecting the Allow Mobile Download preference gives any user--even those
`without a RealPlayer--the ability to download your RealMedia clip directly
`onto their hard drive.
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`To allow copying of your RealMedia clips:
`
`1. From the RealProducer Plus main window, choose Preferences from the
`Options menu.
`The Preferences dialog opens.
`
`2. Click the General tab.
`
`3. Select Allow Recording if you want RealPlayer Plus users to be able to
`record your clip.
`
`4. Select Allow Mobile Download if you want users to be able to download
`your clip to their hard drive.
`
`5. Click OK to close this dialog.
`
`Temporary Storage Directory
`During a recording session, RealProducer Plus uses a directory to store media
`files prior to creating the final RealMedia clip. Using the Preferences dialog
`box, you can change the directory used for this purpose.
`
`To change the temporary storage directory used by RealProducer Plus:
`
`1. From the RealProducer Plus main window, choose Preferences from the
`Options menu.
`The Preferences dialog opens.
`
`2. Click the General tab.
`
`3. Enter the new temporary directory.
`
`4. Click OK to close this dialog.
`
`SureStream Preferences
`The SureStream page of the Preferences dialog box allows you to change
`different options when you record SureStream RealMedia clips. You can create
`a separate stream for older versions of the Player, and you can decide whether
`audio or video quality should be given priority during reduced bandwidth
`conditions.
`
`Warning
`These preferences do not work for Single Rate files.
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`RealProducer Plus User’s Guide
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`The Preferences Dialog Box - SureStream page
`
`Player Compatibility
`RealProducer Plus allows you to record RealMedia clips that can be played on
`both RealPlayer versions G2 and 5.0. During the recording process,
`RealProducer Plus creates both a G2 stream and a separate 5.0 stream.
`However, you will still need a RealServer G2 to stream the clip.
`We recommend that you create G2-only clips to limit file size and processing
`time, unless you are sure you need 5.0 compatibility.
`
`To change RealPlayer compatibility:
`
`1. From the main RealProducer Plus window, choose Preferences from the
`Options menu.
`
`2. Click the SureStream tab.
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`3. Select the version of RealPlayer you want your RealMedia files to be
`compatible with from the Player Compatibility drop-down list.
`
`4. Click OK to close this dialog.
`
`Emphasize Audio or Video
`This option allows you to choose whether your clip will emphasize audio or
`video when a RealPlayer’s connection degrades and must switch to a lower
`bandwidth stream. Choosing audio means that video quality will be sacrificed
`before audio quality. Choosing video means that audio quality will be
`sacrificed before video quality.
`
`To change SureStream emphasis:
`
`1. From the main RealProducer Plus window, choose Preferences from the
`Options menu.
`
`2. Click the SureStream tab.
`
`3. Select whether to emphasize audio or video during duress conditions.
`
`4. Click OK to close this dialog.
`
`RealPlayer Preferences
`The RealPlayer page of the Preferences dialog box allows you set the execution
`path of the RealPlayer and your default Internet browser.
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`RealProducer Plus User’s Guide
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`The Preferences Dialog Box - RealPlayer page
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`To change the execution path:
`
`1. From the main RealProducer Plus window, choose Preferences from the
`Options menu.
`
`2. Click the RealPlayer tab.
`
`3. Enter the new command for launching the RealPlayer.
`
`4. Enter the new command for launching the Internet browser which you
`use to view the Help documentation.
`
`5. Click OK to close this dialog.
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