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Footage
Arri — Courtesy of Arri/Fauer — John Fauer, Inc.
Bell South “Anticipation” — Courtesy of Two Headed Monster — Tucker/Wayne Atlanta/GMS.
Canyonlands — Courtesy of the National Park Service/Department of the Interior.
3
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Avid Xpress Pro HD Effects Guide • Part 0130-06769-01 Rev. A • December 2004
You can use the tools and techniques described in this guide to create and
incorporate into your sequence titles and effects with a wide variety of
attributes. This guide also describes how to apply third-party plug-in effect
filters for stunning effects formerly available only on high-end graphics
workstations.
A companion volume, the Avid Xpress Pro HD Effects Reference contains
reference material for all 2D effects and 3D effects. It is available as part of the
Help and on the Avid Xpress Pro HD Online Library and Tutorial CD-ROM.
This guide is intended for all users, from beginning to advanced.
n
The documentation describes the features and hardware of all models.
Therefore, your system might not contain certain features and hardware that
are covered in the documentation.
Using This Guide
Symbols and Conventions
Avid documentation uses the following symbols and conventions:
Symbol or ConventionMeaning or Action
n
c
w
>This symbol indicates menu commands (and
t
Margin tips
Italic fontItalic font is used to emphasize certain words and to
Courier Bold font
A note provides important related information,
reminders, recommendations, and strong suggestions.
A caution means that a specific action you take could
cause harm to your computer or cause you to lose data.
A warning describes an action that could cause you
physical harm. Follow the guidelines in this document
or on the unit itself when handling electrical
equipment.
subcommands) in the order you select them. For
example, File > Import means to open the File menu
and then select the Import command.
This symbol indicates a single-step procedure.
Multiple arrows in a list indicate that you perform one
of the actions listed.
In the margin, you will find tips that help you perform
tasks more easily and efficiently.
indicate variables.
Courier Bold font identifies text that you type.
20
Ctrl+key or mouse actionPress and hold the first key while you press the last
key or perform the mouse action. For example,
Ctrl+drag.
If You Need Help
If you are having trouble using this Avid editing application:
1. Retry the action, carefully following the instructions given for that task in
this guide. It is especially important to check each step of your workflow.
2. Check for the latest information that might have become available after
the documentation was published:
-The ReadMe files are available in your Avid application folder.
If You Need Help
ReadMe files are also available from Help. You need Adobe®
Acrobat® Reader® to view the ReadMe file.
n
The most up-to-date ReadMe files are available on the Avid Knowledge Base.
3. Check the documentation that came with your Avid application or your
hardware for maintenance or hardware-related issues.
4. Visit the online Knowledge Base at www.avid.com/onlinesupport. Online
services are available 24 hours per day, 7 days per week. Search this
online Knowledge Base to find answers, to view error messages, to access
troubleshooting tips, to download updates, and to read/join online
message-board discussions.
5. For Technical Support, please call 800-800-AVID (800-800-2843).
For Broadcast On-Air Sites and Call Letter Stations, call
800-NEWSDNG (800-639-7364).
Accessing the Online Library and Tutorial
The Avid Xpress Pro HD Online Library and Tutorial CD-ROM contains a
multimedia tutorial and all the product documentation in PDF format. Avid
recommends the multimedia tutorial as your first resource for learning how to
use your application. You can access the tutorial and the library from the
Online Library and Tutorial CD-ROM or from the Help menu.
The Online Library includes a Master Glossary of all specialized terminology
used in the documentation for Avid products.
21
Using This Guide
n
You need Adobe® Reader® installed to view the documentation online. You can
download the latest version of Adobe Reader from the Adobe web site. The
tutorial and the effects reference guide require Apple’s QuickTime
application to view the QuickTime movies. You can download the latest
version of QuickTime from the Apple
To access the tutorial and online library from the Online Library CD-ROM:
1. Insert the Avid Xpress Pro HD Online Library and Tutorial CD-ROM into
the CD-ROM drive.
2. Double-click the Mainmenu file.
To access the online library and tutorial from the Help:
1. Insert the Avid Xpress Pro HD Online Library and Tutorial CD-ROM into
the CD-ROM drive.
2. In your Avid application, select Help > Online Library & Tutorial.
How to Order Documentation
To order additional copies of this documentation from within the
United States, call Avid Sales at 800-949-AVID (800-949-2843). If you are
placing an order from outside the United States, contact your local
Avid representative.
®
Web s ite.
®
Avid Educational Services
For information on courses/schedules, training centers, certifications,
courseware, and books, please visit www.avid.com/training or call Avid Sales
at 800-949-AVID (800-949-2843).
22
Chapter 1
Preparing to Work with Effects
Your Avid editing application offers many effects that you can apply to your
sequences. This chapter describes concepts you should understand before you
begin creating and editing effects into sequences.
•Effect Types
•Effects Creation Tools
•Understanding Effect Playback Capabilities
•Video Effects for HD Projects
•Working with Effects in 24p or 25p Projects
•Using the Effect Palette
•Using Third-Party Plug-in Effects
•Avid After Effects External Monitor Preview Plug-In
•Effect Aperture
Chapter 1 Preparing to Work with Effects
Effect Types
Much overlapping occurs between the various types of effects you can create,
as well as the methods used to create them. Your Avid editing application
offers four basic effect types.
•Transition effects (dissolves, wipes, and so forth) are applied at the cut
point between two video clips that are on the same video track (that is, the
same video layer). For more information on creating transition effects, see
Chapter 2, “Basics of Effects Editing” and Chapter 3, “Customizing
Effects.”
•Segment effects are applied to an entire clip or group of clips. There are
two types of segment effects:
-A single-layer segment effect, such as the Mask effect, is applied to
a segment on one video track. Single-layer segment effects use one
stream of video. For more information on creating single-layer
segment effects, see Chapter 2, “Basics of Effects Editing” and
Chapter 3, “Customizing Effects.”
-A multilayer segment effect, such as the Picture-in-Picture effect, is
applied to the top layer or a middle layer of segments that contain two
or more video tracks that will be played simultaneously. For more
information on techniques for creating multilayer effects, see
Chapter 6, “Creating Layered and Nested Effects.”
24
•Title effects are created with the Title tool and edited onto their own
layers in a sequence. For more information on techniques for creating and
editing title effects, see Chapter 8, “Creating Titles and Graphic Objects”
and Chapter 9, “Editing with Titles.”
•Motion effects (freeze frame, variable speed, and strobe) are created by
manipulating the playback characteristics of a clip of footage. For more
information on techniques for creating motion effects, see Chapter 5,
“Creating Motion Effects.”
Effects Creation Tools
Titl
l
The following chart presents the basic tools used to create effects.
Effects Creation Tools
Sources of effects:
Effect Palette
Apply transition and
segment effects directly
to tracks.
Effects editing in default
editing mode:
Motion Effect dialog box
Edit effect clips into the Timeline.
e too
Title and motion effects appear
first as clips in the bin.
Effects adjustment in Effect mode:
Effect Preview monitor:
Allows you to preview an
effect, manipulate
keyframes, and
manipulate wire-frame
representations of the
effect.
Effect Editor:
Allows you to
adjust effect
parameters.
25
Chapter 1 Preparing to Work with Effects
Understanding Effect Playback Capabilities
When you apply an effect to video, you change the look of that video, for
example by altering its color values or by blending frames from one clip with
frames from another. In some circumstances, your Avid editing application is
able to calculate these changes and display them in real time.
In other circumstances, the Avid application is unable to do this, so you must
render the effect to play it at full speed. Rendering is the merging of effect
layers to create one stream of digital video for playback in real time. When
you render an effect, the Avid editing application calculates the changes made
to each frame of the effect and stores them in a file, known as a precomputed master clip (or simply a precompute), which it can then use to play back the
effect.
It is important to understand when you can use real-time effect playback to
keep your effect editing work fast and flexible, and when you must render
effects. The following paragraphs provide a brief introduction to the main
alternatives available. For complete information on effect playback and
rendering, see Chapter 4.
26
Most Avid editing applications can play effects in real time while your work is
still in progress. This allows you to preview the look of effects and make
adjustments to them without having to render the effects. Your Avid editing
application cannot play all motion effects or some third-party plug-in effects
in real time; these effects must always be rendered before you can see how
they look when playing at full speed.
The Avid editing application’s ability to preview effects in real time is
dependent on the complexity of the effects in your sequence and on system
factors such as processor speed and available memory. For more information
on real-time preview of effects, see “Real-Time Preview of Video Effects” on
page 163.
If you want to preview effects that your editing application cannot play in real
time without rendering them, you can use the Render On-the-Fly option to
preview them frame by frame. For more information, see “Previewing Effect
Frames with Render On-the-Fly” on page 162.
When you are ready to output a sequence that includes effects, you may have
to render some or all of the effects. The exact number of effects that you must
render for output depends on the following factors:
•Whether or not you have an Avid Mojo attached to your system. If you do
not have an Avid Mojo, you must render all effects before you perform a
digital cut.
•How complex your sequence is, and especially how your effects are
layered on multiple video tracks.
For more information, see “Rendering Effects” on page 171.
Video Effects for HD Projects
Many video effects work the same way in SD and HD, for example, dissolves,
superimposes, flips, and so on.
Effects that use square geometry automatically use the correct pixel aspect
ratios. These effects include Titles, Box Wipes, certain paint modes like
Mosaic, and so on. Effects such as Color Correction, Color Effect, and Luma
keys automatically use the correct color space (ITU-709 for HD).
Video Effects for HD Projects
Note the following:
•Titles: There is no need to generate 4:3 media.
•Timewarps: These effects use a 60p input and output format in 720p/59.94
projects.
All effects are rendered at Full Quality. Real-time previews of effects in HD
projects play at either Best Quality or Best Performance. For more
information, see “Playing Back at Different Video Qualities” on page 167.
27
Chapter 1 Preparing to Work with Effects
Working with Effects in 24p or 25p Projects
Since effects in 24p or 25p projects are frame based rather than field based,
their normal behavior is slightly different from effects in interlaced projects. In
particular, temporal artifacts might appear in some effects under certain
circumstances. This section explains when temporal artifacts might appear and
suggests ways to create effects that do not show perceptible temporal artifacts.
Effects that do not involve any movement across the screen — for example,
masks, Color Effects, and dissolves — look the same in 24p or 25p projects as
in interlaced projects.
Effects that involve movement across the screen — for example, wipes,
3D shapes, or moving titles — might look different from their equivalents in
interlaced projects for the following reasons:
•Since the effect is created using 24 or 25 progressive frames per second
(24p or 25p), motion across the screen is interpolated in 24 or 25
increments per second. (Contrast the 50 increments per second for a PAL
interlaced project or the 60 increments per second for an NTSC interlaced
project.) For example, the edge of a 1-second Horizontal Edge Wipe effect
will appear in 24 or 25 different positions across the screen. For effects of
short duration in particular, this difference might be perceptible to the
viewer.
28
n
•When the 24p or 25p media is output (to the interlaced Client monitor or
as a digital cut), it is re-interlaced and pulldown is inserted to achieve 60
fields per second (NTSC). The Avid application inserts pulldown by
duplicating some of the existing frames to create the correct number of
fields per second. Temporal artifacts created by this duplication process
might be perceptible to the viewer. This behavior is a normal result of the
pulldown insertion process and is often perceptible in conventional
transfers of films to video formats.
PAL output with pulldown also duplicates certain frames but is less likely to
exhibit perceptible temporal artifacts since fewer frames require duplication.
Motion effects created in 24p or 25p projects, such as Variable Speed effects,
might also look different from motion effects created in interlaced projects.
For more information on 24p or 25p motion effects, see “Considerations for
Motion Effects in 24p or 25p Projects” on page 218.
Using the Effect Palette
n
For more information on how the Avid application handles 24p or 25p
material, see “Working with 24p Media” and “Working with 25p Media” in
the Help.
If an effect in a 24p or 25p project does not look completely smooth, do one or
more of the following:
•Slow down the effect.
For example, a 2-second Horizontal Edge Wipe effect, while it is still
performing at the same rate (24 increments per second), moves across the
screen in 48 steps. These smaller movements make the wipe appear
smoother to the viewer.
•Soften the edges of the effect.
The more the edges of the effect are blurred, the less noticeable the
movements between the increments of the effect will be.
•When working with moving titles, avoid small font sizes and sharp edges.
In a moving title such as a roll, lines of small text might move less
smoothly than lines of larger text.
Using the Effect Palette
The Effect Palette is a window that lists all the effects available on your Avid
editing application. The complete set of effects available with your Avid
editing application includes all standard Avid effects for your model as well as
any additional third-party plug-ins you might have installed. The effects that
are available depend on the model and options that you purchased and on what
third-party plug-ins you might have installed.
You select transition and segment effects from the Effect Palette.
29
Chapter 1 Preparing to Work with Effects
Understanding the Effect Palette
The left side of the Effect Palette displays a scrollable list of effect categories
that includes the following standard categories as well as categories for any
third-party plug-ins you have installed.
•Blend
•Box Wipe
•Conceal
•Edge Wipe
•Film
•Illusion FX
•Image
•Key
•L-Conceal
•Matrix Wipe
•Peel
™
30
n
•PlasmaWipe
•Push
•Sawtooth Wipe
•Shape Wipe
•Spin
•Squeeze
•Xpress 3D Effect
If you have effect templates saved in an open bin, or if you have third-party
plug-in effects installed, additional effect categories appear in the Effect
Pale tte.
The right side of the Effect Palette shows a list of the individual effects
available for the currently selected effect category. Each effect has its own
effect icon. Effects that are or might be playable in real time appear with a
color-coded dot. For more information, see “Understanding the Color Coding”
on page 32 and “Real-Time Preview of Video Effects” on page 163.
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