Sensoray 2251 User Manual
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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
MPEG1/2/4 capture at full frame rate and full resolution.
Motion JPEG capture (JPG frames and AVI streams)
Composite video input.
Stereo audio is mixed synchronously into MPEG stream.
On screen display (OSD) of multiple text overlays.
Three-zone motion detection.
Compact design.
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)