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Chapter 3: AVoption XL Hardware Overview

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chapter 3

AVoption XL Hardware Overview

AVoption XL consists of two hardware compo-

nents: a Meridien Digital Media Board that in-

stalls in a PCI slot in your computer, and a Me-

ridien I/O Box that connects to the card in your

computer. A Video I/O Board, installed in the

Meridien I/O Box, provides video inputs and

outputs from your computer to the rest of your

video equipment.

AVoption XL Hardware

Capabilities

AVoption XL hardware:

• Receives composite, component, S-video, or

(optional) SDI video signal.

• Digitizes incoming video.

• Compresses digitized video using advanced

JFIF compression.

• Outputs composite, component, S-video, and

(optional) SDI video signals.

• Captures and plays back uncompressed video.

JFIF Video Compression

The Meridien board captures and plays back

video media in JPEG File Interchange Format

(JFIF). JFIF compression levels provide variable

levels of compression for your video project, de-

pending on the recording input selected. The

available JFIF resolutions are:

• Single ﬁeld – 15:1s, 4:1s, 2:1s

• Two ﬁelds – 20:1, 10:1, 3:1, 2:1, 1:1 (uncom-

pressed)

Higher JFIF compression ratios require less stor-

age space but provide decreased video resolu-

tion than lower compression ratios.

The lowest JFIF resolution is 15:1s. The maxi-

mum resolution is 1:1 (uncompressed).

JFIF Compression and Storage

JFIF compression levels vary slightly, depending

on the video input selected.

1:1 (uncompressed) data storage levels are not

approximate. The amount of data required to

store 1:1 video is always the same, regardless of

the video input used.

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