New Media Technology multi-media User Manual

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McKinney Engineering Library
Multimedia Tutorial Production Guide
A guide to the production of multi-media library instruction using streaming media technology.
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Table of Contents
Audio Media Creation ............................................................. 9
Synchronizing Your Tutorial with SMIL .......................................... 10
Publishing your Tutorial Online .................................................. 12
Evaluating Your Tutorial ........................................................... 13
Thanks and Credits ................................................................ 14
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Is Streaming Media the Right Choice?
There are a variety of media formats that can fa­cilitate the successful delivery of online instruc­tion; the one you choose should reect the goals and abilities of your instructors and learners.
This guide is based on the redesigned online Engineering Communications Tutorial at the University of Texas, developed by the McKin­ney Engineering Library in partnership with the Digital Information Literacy Ofce and Digital Li­brary Services Division. The tutorial underwent analysis and revision with the goal of creating effective library instruction with guidance in mul­tiple languages and diverse media. Streaming media was the format selected for the project because it would allow the development team to use separate audio les for each language while drawing from a common bank of visual imagery. The images and audio les could be synchro­nized using the Synchronized Media Integration Language, or SMIL.
Other formats—such as Flash and simple HTML—were rejected for a variety of reasons. Although Flash offers many interactive features that lend themselves to the development of
rich learning experiences, Flash animation is far more time-consuming to produce and more complex to modify than a SMIL-based tutorial. In addition, Flash production requires a highly­specialized set of technical skills and costly software. The use of simple HTML was rejected because an audio component was deemed cru­cial to the multi-lingual sections of the tutorial.
When you are deciding on a format for your tutorial, remember to consider your audience’s learning environment. If you expect the majority of learners to use a dial-up connection or older, lower-speed computers, you may wish to avoid bandwidth-intensive solutions that rely upon the latest browsers and plug-ins. FlashMX is an example of current technology that is not ubiq­uitously available. Even SMIL, the technology recommended in this guide, has cross-platform limitations.
Looking Ahead
Although this guide focuses on the produc­tion of audio/visual elements, the Engineering Communications Tutorial development team acknowledges the importance of active learn-
ing in online library instruction. Nancy Dewald notes in the Journal of Acadmic Librarianship that “active learning is accomplished with indi­vidual or collaborative exercises, questioning by the librarian... or other forms of practice to reinforce instruction.”1 Similarly, Brandon Hall states in the Web-based Training Cookbook that “Interactivity makes the difference between a program that simply presents information, and one that actually trains the user.2 By integrat­ing streaming media instruction with interactive segments like quizzes, assignments, or follow­along exercises, the effectiveness of your tuto­rial may be improved. Keep in mind that even on the Web, doing is a better teacher than simply watching and listening.
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Planning Your Instruction
Instructional designers spend a great deal of time planning instruction before actually creat­ing any instructional materials. This step is vital whether you are a teacher planning classroom activities, a writer developing a textbook, or a course developer for online instruction.
Before you begin creating your online library instruction tutorials, take the time to thoroughly identify and organize the information you want to deliver. Remember that “library instruction is best-recieved when it is course-related, and specially assignment-related.”3 Assuming that you have already identied a genuine need for online instruction on the topic of your tutorial, the next step is to analyze your learners and estab­lish instructional goals.
Analyzing your Learners
Consider the age, experience, cultural back­ground and technical expertise of your learning audience. Are they a homogenous group with similar goals or do they vary widely? What are learners’ probable goals in completing the on­line tutorial? What aspects of online instruction might they prefer to classroom instruction? How will they use the knowledge they gain?
Once you have successfully answered these questions, you are in a good position to create online instruction that will be both meaningful and enjoyable for your learning audience.
Clarifying Instructional Goals/Objectives
Think about your instructional goal for the learn­er. Does it match the probable goal of the learner
Course Goal:
1. Acquaint students with strategies for effective Internet searching.
Course Objectives:
1. Students will be able to explain the differences between different search engines.
2. Students will be able to dene relevance.
3. Students will be able to construct a Boolean search.
4. Students will be able to explain the concept of stop-words and identify the more common
5. Students will be able to identify signs of unreliable information.
him or herself? Now determine what the learner will need to be able to do to demonstrate that the instruction has achieved the stated goals. Write out instructional objectives in the form of activities that the learner will be able to perform when nished with the tutorial. This exercise will help you structure your tutorial to the greatest advantage of your learner. It will also assist you in evaluating whether or not your completed tu­torial meets all of its instructional objectives.
Finally, make an outline of the topics you’ll cover over the course of the tutorial and think about the most sensible order in which to present them.
It may also be useful to list the skills that learn-
Google
Yahoo
Altavista
ones.
1 2 3
1.1
1.1.1 1.1.2
1.2
ers will need to master before they can success- fully complete the different sections of your tuto­rial. Looking at this list may bring attention to the areas that require the most attention and may even suggest topics of instruction that weren’t in the original outline. For example, if students must know how to construct a boolean search string in order to complete a tutorial about your library catalog, you may wish to include a sec­tion or even a separate tutorial on the subject of boolean logic.
Consult “Tips for Developing Effective Web­based Library Instruction” by the ACRL for more recommendations.
3.1
4
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Determining Available Technology/Skill Sets
The technology with which you choose to deliver your instruction should complement the instruc­tional goals and audience proles that were de­ned in the rst section. This guide focuses on the use of streaming media (using Real® media delivery tools) to deliver audio, video, animation and slide-show presentations. Bear in mind that the use of streaming media can be augmented by more interactive material that engages your learner in active learning.
If you are using this guide to prepare your tuto­rial, you need to have some basic knowledge of:
• SMIL (an XML-based mark-up language like HTML)
• audio recording
• image manipulation (Fireworks®, Photoshop®, etc.)
• Real® media formats
Optionally, you may wish to use video or ani­mation, in which case you’ll need to be familiar with:
• digital video editing
• video screen capture (Camtasia®)
• Flash® animation production
Software/Hardware Requirements
Many of the les required to produce your tutori­al can be created using a variety of applications that are available at little or no cost.
A basic text editor like WordPad or Notepad can be used to create all of the SMIL, RealPix and
RealText les that will synchronize the audio and visual components of the nished tutorial.
The audio for your tutorial will need to be digitally recorded and saved in the appropriate Real format. This process requires a computer equipped with a sound card, high-quality micro­phone and software for recording and editing the audio les. An inexpensive option for audio software is the RealSystem Producer Basic, which is freely downloadable (as of summer
2002) at www.realnetworks.com.
Image manipulation can be done using a vari­ety of applications including the ever-popular Photoshop and Fireworks. In addition to being able to create the images, you’ll want to know
something about optimizing them. Optimizing images allows you to reduce le sizes with as little image degradation as possible.
If you wish to use video in your tutorial, the obvi­ous requirements are a video camera and video editing application. In addition, you will need to become familiar with the options for synchroniz­ing your audio and video segments as well as optimizing video les for streaming in Real me­dia format.
For screen capture video, the product Camtasia is one of the only products on the market and can be found through www.realnetworks.com.
Flash animations can be played in RealPlayer 7 or 8 and the RealOne Player, although sound effects embedded in the Flash animation itself will not be heard. Instead, sound must be syn­chronized using SMIL. Flash animations can be created using either Macromedia Flash or Adobe LiveMotion.
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Script Creation
The rst step in producing your instructional ma­terials is creating the audio scripts for the indi­vidual sections. The audio will guide the learner through the information in each section of your tutorial, so the script should be crafted with your instructional goals and objectives in mind.
Create scripts for each section of the tutorial outline that you developed in the instructional planning stage. Include staging notes in your script that describe what the learner might be seeing while the script is being played. This will assist you when you create the visual materi­als. In addition, the types of visual cues that you plan to offer your learners may alter the script considerably.
Once you have created your scripts, proceed to the visual media creation step. DO NOT RECORD your scripts before you have created your visual media. You will likely discover new and creative ways of presenting the information throughout the visual media creation process, which can result in signicant script revision.
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Visual Media Creation
The options for visual media creation are limited only by your imagination—and project dead­line! Between static images, animations, video, and text there are innite combinations of rich, expressive visual delivery methods for your in­struction.
The next step is to create visual media that will be displayed as the learner listens to your audio lecture. Using the script that you wrote, begin creating visual pieces to accompany each por­tion of the lecture. As you assemble a series of images, you will likely nd that your audio script requires revisions here and there. Remember as you create your media that your learner will need at least several seconds to absorb each new piece of visual information.
It is important to save your images in GIF format. Gif is the only image format that sup-
ports streaming. (Animated gifs are supported as well; however, to obtain the smallest pos­sible le size, you may wish to use short Flash animations rather than animated gifs.) You don’t need to do anything special with the gif les themselves; you will learn how to synchronize the images with the audio when we create our SMIL le later on.
Your nal tutorial will run in a Real Player window of a specied size. Before you begin creating your media, be sure to establish the size of your tutorial. DO NOT plan on using the entire screen for your presentation. In order to keep download times reasonable, you’ll need to restrict the size of your tutorial to around 500x350 OR LESS.
The nal determination should be based on the quality of server you will be using to host the tutorial and the type of media that will be pres­ent. For example, Real video requires more bandwidth than Flash animations, so a tutorial containing a lot of Real video should be smaller on the screen than one containing Flash.
Image Creation for Beginners
Perhaps the easiest and fastest method of creating visual media is through the creation of PowerPoint slides. You may create an entire presentation in PowerPoint and then save your slides as gif images.
(The precise method for exporting your slides as images may vary depending on the version
of PowerPoint you use. Refer to the PowerPoint help documentation for further directions.)
More on Image Creation
If you are familiar with PhotoShop, Fireworks, or other image creation applications, creating your visual media can be a lot of fun. Although streaming your media allows you to use larger le sizes than would be reasonable on a stan­dard Web page, you should not neglect image optimization. If your nal presentation is too large, it will take a long time to load, and may not play as smoothly as you’d like. Since you are saving your images as gifs, optimization means reducing the number of colors as much as pos­sible without signicantly reducing the quality of the image. Refer to the help documentation of your image creation application for details.
Flash Animation
Flash animations can be played through Real Players 7 and 8 as well as the RealOne Player. If you would like to animate sections of your tutorial, Flash provides a low-bandwidth alterna­tive for doing so, as long as you keep a few rules in mind.
First, sounds that you create in your Flash movie will not play through Real. Create silent anima­tions and synchronize any audio using SMIL.
Second, don’t spend too much time perfecting the timing of your Flash pieces. As with video, Flash segments will need to be synced up with the Audio portion of your tutorial later on and this will likely include some tweaking within the
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Visual Media Creation
Flash segment itself. Short, simple animations are the easier to integrate with audio than pro­longed displays.
Third, the more keypoints in your Flash movie, the larger the le. Keep keypoints to a minimum. Complex scripting should also be avoided. Although Real maintains that interaction with Flash elements as dened using ActionScript is preserved through the Real player, we rec­ommend extensive testing before you include signicant interactive elements in your Flash pieces.
Don’t forget that the use of Flash for our pur­poses is only to enhance the display of visual information. If you nd that Flash is becoming the centerpiece of your tutorial, you may wish to reassess the decision to use streaming media as your method of delivering instruction.
Video Production
Digital video is a bandwidth intensive medium that requires some special skills to edit and prepare for presentation. If there are segments of your tutorial that will benet greatly from the inclusion of video, use it. However, if your tuto­rial does not require video to be successful, you may choose to use other, less complex visual elements.
or Website. Screen capture video is not as effec­tive for teaching conceptual knowledge such as Boolean logic or information evaluation.
Regardless of the software/hardware or format in which your original video is captured, you will need to convert the le to Real media for­mat (.rm). Real Producer, Camtasia, and other media creation applications provide options for saving your les in Real media format. Your set­tings will vary according to the type of server that will host your media and the connection speeds of your users. To determine the appropriate set­tings for your tutorial, consult your Webmaster and the Real Networks online documentation.
One way of using instructional video is to cap­ture actions on a computer screen with a prod­uct like Camtasia. This can be helpful if you are trying to convey procedural knowledge such as interaction seqences with a computer program
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Audio Media Creation
There are as many software combinations avail­able for audio media production as there are for visual media production. In addition, a range of audio recording hardware is available depend­ing on your needs and expertise. Remember that the quality of your audio is affected by the quality of every step in the recording and editing process; the microphone, the mixer, the sound­card and the software you use will all inuence the caliber of your nal presentation.
The simplest hardware option for recording your audio is using a high-quality microphone that plugs directly into the back of a computer with a sound card. In conjunction with free soft­ware such as Real Producer Basic, or Windows Sound Recorder, this method will result in ser­viceable audio les, but not professional grade sound. If high-quality audio is a priority for your tutorial, secure the use of a professional-grade microphone and mixer.
be saved in the Real media format (.rm) using settings appropriate for your server and audi­ence. See Real Networks documentation for details.
TIP: When you save your audio les, be sure to use the same Real media settings for your audio as you used to save any video.
Regardless of how you capture your audio tracks, media cleaning software such as Media Cleaner® will help reduce background noise and increase the quality of your nal product.
Since animation and video sequences have their own timeline, the synchronization of your audio with animated or video segments will demand considerable attention. For video segments, you may choose to incorporate your audio into the video le itself. Remember that audio in Flash movies will not play through Real player.
As with video, your nal audio les will need to
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Synchronizing Your Tutorial with SMIL
SMIL, the synchronized multimedia integration language, is an XML-based mark-up language. If you’ve ever used HTML to create a Web page, SMIL will look somewhat familiar.
A very simple SMIL le and an included RealPix le appear on the right.
Notice that in SMIL, as in XML, every tag is closed using the ‘/’ character. If the tag does not contain other tags, the ‘/’ character simply ap­pears adjacent to the closing ’>’.
The two most important sections of the docu­ment appear in red and blue. The red section simply describes the layout of the presentation. The root-layout appears in every SMIL le; it denes the dimensions of the entire SMIL pre­sentation. Once the root layout has been estab­lished, individual regions are dened within the root area in which the visual media may appear. In this le, only one region has been dened. It begins 0 pixels from the top of the presentation and 0 pixels from the left and occupies the entire presentation area.
<smil> <head> <meta name=”title” content=”Engineering Communications Tutorial”/> <meta name=”author” content=”Tutorial Team”/> <meta name=”copyright” content=”(c)2002 McKinney Engineering Library”/>
<layout>
<root-layout background-color=”white” width=”500” height=”330”/> <region id=”graphics” top=”0” left=”0” width=”500” height=”330”/> </layout>
</head>
<body>
<par> <audio src=”rtsp://real.myserver.edu/tutorials/audio.rm”/> <img src=”intro.gif” region=”graphics” begin=”0s” end=”06s”/> <img src=”picture1.gif” region=”graphics” begin=”06s” end=”12s”/> <img src=”slides.rp” region=”graphics” begin=”12s” end=”25s”/> <img src=”conclude.swf” region=”graphics” begin=”25s” end=”35s”/> </par>
</body> </smil>
tutorial.smil
<im> <head width=”500” height=”330” title=”Indexes” author=”Engineering Communications Tutorial Team” copyright=”(c) 2002 McKinney Engineering Library” timeformat=”dd:hh:mm:ss.xyz” duration=”0:13.0” bitrate=”100000” aspect=”true”/ background-color=”#ffffff”/>
In the blue section, the individual pieces of me­dia are synchronized. The audio and the rst image begin simultaneously (as indicated by the <par> tags), but the rst image disappears after 6 seconds. Note that the audio le is referenced with the full URL using the protocol “rtsp” instead of “http”; this is because the audio le is hosted on a machine running Real Server. The second image appears 6 seconds into the audio piece and disappears at 12 seconds. The third image
<image handle=”1” name=”images/slide1.gif”/> <image handle=”2” name=”images/slide2.gif”/> <image handle=”3” name=”images/slide3.gif”/>
<ll start=”0” color=”white”/> <fadein start=”0” duration=”1” target=”1”/> <crossfade start=”3” duration=”1” target=”2”/> <wipe direction=”up” start=”6” duration=”2” target=”3”/> <fadeout start=”12” duration=”1” color=”white”/> </im>
slides.rp
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Synchronizing Your Tutorial with SMIL
le—called “slides.rp”—is a RealPix le. The contents of the RealPix le appears to the lower right. RealPix is a lot like SMIL; it’s a mark-up language that makes it easy to dene transitions like fade-outs and wipes between your images. Notice that the RealPix le contains references to three images, for a total of six visual media les to be played with the audio le.
TIP: You may wish to create a skeletal SMIL or RealPix le that sequences your visual media without precise timing. Then listen to your audio track, note the times at which image transitions should occur and modify the SMIL le accordingly.
Real Networks maintains excellent documen­tation on producing multi-media presentations with SMIL and RealPix. Refer to thier support website (http://service.real.com/) for detailed help les and to learn about more sophisticated SMIL syntax.
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Publishing Your Tutorial Online
The nal step in producing your online tutorial is publishing it on the Web. Your tutorial may consist of just one SMIL presentation, or it may be a series of presentations. You must decide how to present these les in a way that facili­tates your instruction. You may wish to provide a link to the SMIL presentation directly from an existing Web page. Or you might create a spe­cial “tutorial” Web page with links to one or more related presentations. Alternatively, you can embed your presentation in HTML les, which allows for substantial control over the viewing environment. (In addition, embedding in HTML allows you to include quizzes, assignments and other non-multimedia elements in a consistent framework.)
By now, you will have determined whether Real Server is available to host your media. If so, be sure to place any media, RealPix and SMIL les on the Real Server. If you elect to embed your multi-media segments in an HTML framework, place the HTML les in your usual Web-publish­ing folder.
TIP: Remember that streamed audio and video hosted on a machine running Real Server are retrieved using the “rtsp” proto­col instead of “http.” Be sure to reference your media appropriately.
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Evaluating Your Tutorial
Evaluation is a crucial step in the instructional design process. Evaluation allows you to con­tinuously increase the effectiveness of your instruction and hone your design skills. Since your instruction is an online tutorial, you’ll face unique challenges in evaluating your work—but don’t be discouraged! You will likely learn as much from the evaluation process as you did throughout the planning and production stages.
Your tutorial has elements of both a Website and instructional material. To accommodate these dual purposes, we’ll look at two different evalua­tion processes, one that examines the usability of Web resources, and one that assesses the success of the instruction itself.
Usability
In recent years, usability has taken center stage in the world of Web development. Becoming familiar with standard usability heuristics (such as those published by Jakob Nielsen), can help you make good design decisions through­out the planning and production processes.
Remember, usability encompasses a wide range of Website characteristics such as ac­cessability for the disabled, visual and syntactic organization, navigation and labeling, and many other distinct features of interaction. When you test the usability of your tutorial, do it in multiple browsers and platforms--the most basic test of usability is whether or not your site can be seen by Mac and PC users with a variety of browsers.
image by freeimages.co.uk
The best way to test your nished tutorial for us-
ability is to observe rst-time users navigating your page or site and accessing the instructional materials. Don’t worry about the success of the instruction itself while you test for Usability. First determine whether or not users understand how to use the tutorial and can do so successfully. Usability problems can create false negatives when you test the efcacy of your instruction; it’s best to eliminate lingering usability problems before evaluating the instruction itself.
Evaluating Instruction
Instruction is generally evaluated using learner assessments of some kind. Assessment may include an interview, a skills demonstration or a written test. By carefully planning and choos­ing participants for the evaluation, you can
determine whether or not users of your tutorial are learning the skills you are trying to teach.
Be selective when choosing evaluation partici­pants. Don’t use staff members or even regular patrons of your library to test library instruction unless they are the intended learners. While it is tempting to use the resources close at hand, you’ll be surprised at the fresh perspective and ideas that outsiders will bring to the project.
When designing the test itself, use the instruc­tional goals you developed in the planning stage. Imagine ways that your learner could demonstrate newfound competencies; whether you use a written skills test, a personal dem­onstration or a personal interview, be sure to maintain a consistent format for each evaluator. Finally, remember that you are testing your in­struction—not the evaluators!
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Thanks and Credits
The redesigned Engineering Communications Tutorial and the development process upon which this guide was based would not have been possible without the contributions of the staff at the Digital Library Services Division and the Dig­ital Information Literacy Ofce, eLeader Project.
Thanks go out to Aaron Choate, Peter Keane, Mason Jones, Carolee Miles, and Susan Rit­tereiser for contributing their technical and creative expertise to the tutorial design and pro­duction process. We also thank Tina Ochiai and Adriana Oldham for their translation services.
For More Information
Visit the Engineering Communications Tutorial on the McKinney Engineering Library Homep­age: www.lib.utexas.edu/engin.
Contact McKinney Engineering Library for more information about our online library instruction initiatives: englib@lib.utexas.edu
This guide was created by Andrea Forte: aforte
@alumni.utexas.net.
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References
1. Nancy H. Dewald, “Trasnsporting Good Library Instruction Practices into the Web Environment: An Analysis of Online Tutorials, ” Journal of Aca­demic Librarianship 25 (January 1999), 26.
2. Brandon Hall, Web-Based Training Cookbook (New York: John Wiley & Sons, 1997), 4.
3. Dewald, 26.
4. ACRL Instruction Section Teaching Methods Committee, “Tips for Developing Effective Web-Based Library Instruction,” <http://www.lib.vt.edu/ istm/WebTutorialsTips.html> (accessed 06/05/2002)
Other Resources:
Anderson, Anne, David Gray and Jacque Dessino, “Tutorials and Other Web Aides,” Inquiry 4 n2 (Fall 1999), 48-57
Dewald, Nancy H. “Web-Based Library Instruction: What is Good Pedagogy?” Information Technology and Libraries 18 (1999): 26-31.
Dick, Walter et al, The Systematic Design of Instruction, 5th ed. Boston: Addison-Wesley Publishing 2000.
Dixon, Lana, Marie Garrett, Rita Smith, and Alan Wallace. “Building Library Skills: Computer-Assisted Instruction for Undergraduates.” Research Strategies 16 (1998): 93-102.
Duchastel, “A Web-Based Model for University Instruction,” Journal of Educational Technology Systems 25 (1996/97):225.
Dupuis, Elizabeth A. “The Times They Are A’Changin: Students, Technology and Instructional Services.” Reference Services Review 26.3-4 (1998): 11-16.
Gagne’, James and Lesie Briggs, Principles of Instructional Design, 4th ed. Fort Worth: Harcourt Brace Jovanovich College Publishers, 1992.
Kocour, Bruce, Using Web-based Tutorials To Enhance Library Instruction, College & Undergraduate Libraries v7 n1 p45-54, 2000.
Tobin, Tess and Martin Kesselman, “Evaluation of Web-Based Library Instruction Programs” In: IFLA Council and General Conference. Conference
Programme and Proceedings (65th, Bangkok, Thailand, August 20-28, 1999)
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