Windows NT Video Editing Solution
Non-linear digital video editing is to
video production what desktop publishing is to the printed word. When Aldus
PageMaker 1.0 came out for the Macintosh, it revolutionized publishing. No
longer did designers have to deal with typesetting, cut-and-paste, and other
prepress nightmares at an expensive print shop: They could instead work with a
simple program on their economical desktops.
Video-editing applications have had a similar effect on video production.
You no longer have work with a many-thousand-dollar commercial tape deck and
countless other pieces of equipment to produce professional-looking video
footage. Except for cameras and final output devices, all the tools are included
within the computer as a single package. Auxiliary applications for morphing, 3D
animation and rendering, and special-effects enhance what you can do and bring a
level of quality to the corporate enterprise or home user that was formerly
reserved for million-dollar studios.
Windows NT offers a stable and powerful environment for video editing, and
Avid and other companies have specifically targeted the NT audience. Avid's
product, Real Impact, is an NT-native 32-bit application that can take full
advantage of NT's inherent scalability and reliability. Real Impact offers a
video-editing solution that rivals $100,000 UNIX-based solutions, as well as
lower-end desktop solutions based on Macintosh or Amiga systems. And you can't
beat Real Impact's list price at $13,000 for a turnkey system. (The price is
derived by combining $3000 for a basic Dell 120-MHz Pentium box with 32MB of RAM
and 1GB of disk space, $3000 for the Real Impact software, $5000 for a Targa
2000 video-capture card, and $1500 for a Seagate 4GB audio/video drive).
Companies that produce information kiosks, CD-ROMs, video tapes, and other
video-based products can save a significant amount of money by keeping their
production process in-house instead of out-sourcing their work.
Features
Real Impact's tool set covers most producers' needs, and any experienced
video editor can recognize the interface, which includes buttons and controls
that mimic those you find on commercial tape decks. When you combine that
interface with Windows NT's drag-and-drop capabilities, file standards, and
multiple-windows interface, Real Impact is a formidable competitor to
traditional manual-editing systems (see screen 1).
The Real Impact/NT environment offers CD-quality
sound and 24-bit color video. It also supports instant playbacks, automatic
audio/video synchronization, 32 levels of undo/redo, and access to existing
audio and video clips at any point in a video sequence. Furthermore, you can
import and export file types in almost any format to use in many different
applications: AVI, WAV, FLC, BMP, JPEG, TIFF, PCX, TGA, and Open Media Framework
Interchange (OMF), which is a cross-platform industry-standard file format.
Digitizing audio and video is as simple as plugging your source into the
capture card and using the digitizing tool. Real Impact supports up to 30 frames
per second--dual field--with automatic audio synchronization. Image and audio
quality are adjustable, so you can tune them to your system or storage needs.
The program also provides controls so that you can manipulate a commercial tape
deck via a serial interface to record from and print to tape.
Using the media library and database, you can create a storyboard by
locating and arranging your video and audio clips into a sequence. You can then
experiment with the sequence in the Timeline window. Once you have your basic
story, you can add visual effects (such as picture-in-picture), transitions
(wipe, dissolve), title sequences (rendered fonts with backgrounds, rolling or
static), special graphics, or new audio to give your story your personal flare.
Real Impact has four independent audio tracks and two video tracks for mixing
audio and video feeds, and the plug-in architecture allows you to use programs
such as TransJammer or Elastic Reality for additional effects (see "Elastic
Reality" on page 72).
Performance
I tested Real Impact on a turnkey system provided by Avid (a Dell Dimension
XPS P120c, as described above). Although Avid does not directly sell this
configuration, you can order it from US dealers. Avid does sell the audio/video
drives.
I ran into a few problems with the video drivers for the Truevision Targa
2000 board, which is currently Avid's only supported capture device under NT.
The problems, which came from incompatibilities with existing Truevision NT
drivers, caused screen-redraw errors and occasional failures when I tried to
reactivate windows. Avid personnel said these problems will be fixed by the next
release of Real Impact and existing users will be able to get upgrades.
Avid offers ample documentation, both in a comprehensive printed manual and
via extensive on-line Help. There is also a complete tutorial that steps you
through the program's features and capabilities.
The only place this turnkey solution is lacking is in overall system
performance. The P120 is probably the bare minimum you would need for this work,
and you might consider a 150-MHz or 200-MHz Pentium Pro, with 64MB of RAM or
more for speedier results. I'd like to see some more advanced audio-editing
features, as well. Real Impact came up short when I compared its meager
audio-editing capabilities with the application's excellent video-editing suite.
Avid representatives say that these enhancements will come in future releases.
The next version of Real Impact will encompass support for third-party Moving
Picture Experts Group (MPEG)-encoding tools to allow for network file
distribution.
End of Article