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Sensoray 2251 User Manual

Page 5

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5

Introduction

Model 2251 is a USB video and audio capture device. It converts the signal from an analog video
source (NTSC or PAL) into one of the supported MPEG or MJPEG streams along with (optional)

audio from a line level input. Model 2251 is powered through the USB port and does not require

any external power supplies.

Feature Summary

ƒ MPEG1/2/4 capture at full frame rate and full resolution.

ƒ Motion JPEG capture (JPG frames and AVI streams)

ƒ Composite video input.

ƒ Stereo audio is mixed synchronously into MPEG stream.

ƒ On screen display (OSD) of multiple text overlays.

ƒ Three-zone motion detection.

ƒ Compact design.

ƒ Driver support for Windows 2000, XP, & Vista.

Specifications

Inputs

Video: composite (BNC), 75 Ohm
Audio: line in stereo (3.5 mm).

Input video formats

NTSC (M), PAL (BDGHIMN)

Output Video formats

MPEG1, MPEG2 (MP@ML), MPEG4 (SP@L3 with

B-frames), Motion JPEG

Output resolutions

320x240, 720x480 (NTSC, 30 frames/sec)

320x288, 720x576 (PAL, 25 frames/sec)

Bitrates

Constant and variable, up to 6Mbs

OSD

max 96 characters per frame, 16x16 font

Snapshot

JPG and BMP formats, concurrent with

capture/preview

Power

+5 V, 470 mA (through USB port)

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