Compact analog HD USB video capture device | Model 2231

Model 2231 Compact analog HD USB video capture device
  • Captures analog HD (AHD, TVI, CVI) and SD (NTSC, PAL) video over up to 1000 ft of coaxial cable
  • Sends compressed A/V stream over USB 2.0
  • MIC and stereo line audio inputs
  • Overlays text on video
  • Captures JPEG snapshots without video interruption
  • USB powered
  • Tiny footprint: 48x25x10 mm

Description

Model 2231 is an ultra-compact, USB-compatible analog HD video capture device optimized for embedding in OEM systems. It captures analog HD video (AHD, HD-TVI, HD-CVI) at resolutions up to 1080p30, reformats the video and adjusts the frame rate as desired, adds user-defined overlays, compresses it to H.264 or MJPEG, and transmits it over USB. At the same time, it will simultaneously generate and transmit a low-latency uncompressed preview video stream.

Audio can be captured from the microphone or line source inputs. Audio may be sent uncompressed, or it may be compressed and multiplexed into a transport stream along with compressed video, or both simultaneously.

2231 block diagram

2231_diag_block.gif

Video processors

Dual video processors and compression engines allow the video to be copied and simultaneously processed as two independent streams. Video processing functions include image resizing and mirroring, frame rate decimation, and overlaying qualified regions with graphics and text. This dual-stream capability is essential in many applications, such as when a high quality stream is required for recording while another stream of lower resolution, bit rate, or both, is needed for mobile device viewing or transmission over bandwidth-limited networks.

Stream formats

Each compression engine independently performs MJPEG or efficient, high-profile H.264 video compression. In the latter case, audio is compressed to AAC-LC and the stream multiplexer outputs MPEG transport stream (MPEG-TS) format. The multiplexer employs precise hardware timestamps to ensure perfect audio-video sync on players.

Software

The unit is a fully compliant USB Video Class (UVC) device that works with any standard UVC driver, thus eliminating the need for a custom driver and allowing seamless control through video APIs such as DirectShow and Video4Linux.

Free Linux and Windows software development kits (SDKs) are available for model 2231. The SDKs include a high-performance API with popular functions such as video snapshot, recording to files (in AVI, MP4 and TS formats), overlay management and, to facilitate styled text, functions for drawing Unicode text on video overlays. Also included is a comprehensive demo program that shows off the device's full capabilities, complete with source code that serves as an ideal starting point for custom applications.

Specifications

Video Input/Output
Input video formats HD-TVI, HD-CVI, NTSC/PAL, AHD, composite (NTSC/PAL)
Maximum resolution/frame rate 1920x1080p30
Video output NTSC/PAL, scaled down for HD input formats
Output video streams
H.264 HP@L3 (MP4, AVI, transport stream)
JPEG Single snapshots, AVI
Raw (uncompressed) UYVY (scaled down)
Electrical, mechanical, environmental
Mechanical dimensions 48x25x10 mm
Mass 16 g
Operating temperature 0 to 70 °C. Please see "Thermal considerations" section of the Hardware Manual.
Interface USB 2.0
Power USB bus powered, not to exceed 2.5 W

Documentation

FileVersionDate M-D-YTypeSize
2231 Hardware Manual1.0.102-14-20PDF320 KB

Downloads

FileVersionDate M-D-YTypeSize
2231 Linux Software Development Kit1.1.2802-13-24BZ26.51 MB
2231 Windows Software Development Kit1.1.2710-27-23ZIP31.83 MB
Latest firmware3949.0.012-05-23ZIP6.09 MB
Other Operating Systems
Need a software development kit for another operating system? We can port our SDK to your OS
for a NRE fee or, with a volume commitment, at no additional cost. Contact Sales for details.

Pricing & Ordering

Model Description Qty 1 Qty 2-9 Order Qty.
2231Compact analog HD USB video capture device$454$443
2231-NHModel 2231 without a heat sink$448$437

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