User`s guide

AVoption & AVoption XL Guide 4
JPEG Compression and Storage
JPEG compression varies according to the com-
plexity of the footage. For example, a medium
shot of a talking head with a simple background
would compress more (using less disk space)
than a panning shot of a stadium full of people.
The following tables list the approximate
amount of video storage, in minutes per gi-
gabyte, required for each AVR level.
Required Hardware
To install and use AVoption, you must first in-
stall a currently supported version of
Pro Tools 24 or Pro Tools 24 MIX hardware.
Other hardware required for AVoption is listed
in this section, along with system requirements
for AVoption.
Supported Computers
• Power Macintosh 9500
• Power Macintosh 9600
• Power Macintosh G3 (Blue & White)
• Power Macintosh G4
If you are using a Blue & White G3 or a G4, a
qualified expansion chassis is required.
Older G3 Macintosh systems (beige) are not sup-
ported.
Storage for AVR 2s – AVR 9s
AVR
level
30/25 FPS
Storage
(Minutes/GB)
24 FPS
Storage
(Minutes/GB)
AVR 2s 40–74 50–93
AVR 3s 32–57 40–71
AVR 4s 19–40 24–50
AVR 6s 11–33 14–41
AVR 8s 5–13 6–16
AVR 9s 3–6 4–7
Storage for AVR 12 and AVR 70 – AVR 77
AVR
level
30/25 FPS
Storage
(Minutes/GB)
AVR 12 18–34
AVR 70
AVR 70B
5–11
AVR 71 4–11
AVR 75
AVR 75B
3–8
AVR 77 2–6
For an up-to-date list of Digidesign-quali-
fied computers, video cards, SCSI accelera-
tors, and hard drives, visit the Digidesign
Web site (www.digidesign.com/compato).