361
ADOBE PREMIERE 5.0
User Guide
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You may achieve higher transfer rates with special hard disk configurations, such as disk
arrays, SCSI 2, Ultra SCSI, or Ultra DMA IDE. Most studios maximize both performance and
volume by capturing video to very fast arrays of multiple high-capacity hard disks.
Central processing unit (CPU)
Because video capture and editing place such heavy demands on computer system perfor-
mance, a faster processor is obviously better, as long as the other system components are fast
enough to keep up with the processor. Multiple CPUs in one computer can speed processing
but are not supported by all operating systems.
Processing demands of other software
The performance demands of video capture make it necessary to give the capture software the
undivided attention of the CPU. If you capture video while several other programs are running
(including virtual memory, network connections, unnecessary system enhancers, and screen
savers), these other programs are likely to interrupt the video capture process with requests for
processing time. Capture video while running as few drivers, extensions, and other programs
as possible. On Mac OS systems, turn off AppleTalk.
Data bus
The
data bus
is the path along which the computer transfers data between system components.
Its speed determines how fast the computer can move frames between the video-capture card,
the processor, and the hard disk. Using fast components with a slow data bus is like driving a
sports car in a traffic jam. If you purchased a high-end computer or a computer designed for
video editing, the data bus is likely to be well-matched to the other components. However, if
you’ve upgraded your computer with a video-capture card, a faster processor, or a hard disk,
there is a chance that the new component may be faster than the data bus. Before upgrading
components, review the documentation provided by the manufacturer of your computer to
determine whether your data bus can properly handle a component you want to add.
c00.book for PS Page 361 Tuesday, March 31, 1998 1:28 PM
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