MAGEWELL 32050 USB Capture SDI Plus


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USB Capture SDI Plus captures SD /HD /3G-A /3G-B/2K SDI signals from a wide range of devices including high definition cameras (professional /surveillance /video conference), video switchers and so on. The maximum input resolution and frame rate is 2048x1080. The USB Capture SDI Plus can deliver the captured video to a computer at up to 2048x1080.

The USB Capture SDI Plus has an SDI input interface as well as a an SDI loop through interface, which allows for monitoring the image while streaming and/or recording. This loop-through feature is not available on the original USB SDI dongle. Additionally, the new USB Capture SDI Plus has new audio input and output functions. A 3.5mm audio interface allows for capture of analog audio from a separate audio device (not embedded in the SDI input). This eliminates the need for an additional audio capture device. The 3.5mm headphones interface allows for playback of audio (either extracted from the embedded SDI audio or from the analog audio input).

The USB capture devices can be used in a number of industries, including sporting and live events broadcasting and recording, video conferencing, medical imaging, and surveillance. You can use it to capture a video output device or the desktop of the streaming computer.

  • Video Processing by Hardware - The USB Capture Plus Family video processing functions include up/down conversion, frame rate control, brightness/saturation/contrast/hue adjustment, de-interlacing. The device has powerful FPGAs to process video before transferring data to the computer, causing 0 CPU usage.
  • USB Capture Utility Software - A software is included with the device to enable advanced functions and more control over the device, such as resolution and frame rate setting, color space conversion, vertical flip and mirror, extraction of HDMI information, EDID, cropping and more.
  • Better Audio - The USB Capture Family adopts ASRC (Asynchronous Sample Rate Converter) technology, which is used in professional USB sound cards.

    The USB Capture Plus Family is compatible with Windows, Linux and Mac OS X.

    The device is compatible with most popular professional third party software for streaming, recording, video conferencing, video stitching, VJ, etc. Check the compatible software.

    The device uses a USB 3.0 interface. It also supports a USB 2.0 port. However, it's important to note that if a USB 2.0 port is used, the real-time frame rate will be reduced due to limited bandwidth. Users can also use a USB 3.0-to-Type C cable to connect it via USB Type C interface on the computer. Additionally, no external power is needed; the unit is powered via the USB connection.

    Supported OS

    Windows 7/8/8.1/10/2008/2008 R2/2012 (x86 & x64)
    Linux (Ubuntu 12.04-16.10, CentOS 7)
    OS X 10.9-10.11
    macOS 10.12

    Supported APIs

    – DirectShow
    – Wave API/DirectSound/WASAPI
    – V4L2
    – ALSA
    OS X/macOS
    – QuickTime
    – AV Foundation

    Supported Software

    Microsoft Media Encoder
    Adobe Flash Media Encoder
    Any other DirectShow, V4L2, QuickTime, AV Foundation bbased encoding or streaming software

    Input Interfaces

    – SD/HD/3G SDI
    3.5mm audio jack
    – unbalanced Line in interface

    Output Interfaces

    USB 3.0
    – compatible with USB 2.0
    – compatible with USB 3.1 Gen 1
    3.5mm audio jack
    – unbalanced Line out interface
    – SDI loop-through interface

    Input Features

    Support for up to 2048×1080 input resolution

    SDI Specific Features

    Integrated cable equalizer supporting cable lengths up to 140M for 3G-SDI signals
    Support for SD/HD/3Ga/3Gb/3Ga-DL/3Gb-DS standards
    Support for 2K (2048×1080) mode
    Support for RGB 4:4:4, YCbCr 4:4:4, YCbCr 4:2:2 color sampling
    Support for 10/12-bit color depth
    Support for extraction of SMPTE 352 payload identifier
    Support for up to 8 (mono) audio channels at 48KHz
    Support for extraction of audio formation information & channel status data
    Limited support of 3Gb-DS: only the first stream can be captured
    Limited support for capture of the first link of dual link interfaces:
    – YCbCr 4:2:2 10-bit 1080p 50/59.94/60: captured as 1080i 50/59.94/60
    – YCbCr 4:4:4 10-bit: captured as 4:2:2
    – RGB 4:4:4: R/B sub-sampled

    Analog Audio Features

    Extract the embedded SDI audio and output via 3.5mm unbalanced Line out
    Capture analog audio via 3.5 mm unbalanced Line In interface

    Video Capture Format

    Support for capture resolutions up to 2048×1080
    Support for output frame rates up to 60fps. (Actual output frame rate can be limited by the USB bandwidth.
    Support for YUY2 4:2:2 8-bit
    More capture format can be set using USB Capture Utility

    Video Processing Features

    Video processing pipelines with 160 Mpixels/s processing bandwidth
    Video cropping
    Video scaling
    Video de-interlacing
    – Wave
    – Blend top & bottom field
    – Top field only
    – Bottom field only
    Video aspect ratio conversion
    – Auto or manual selection of input aspect ratio
    – Auto or manual selection of output aspect ratio
    – Three aspect ratio conversion modes: Ignore (Anamorphic), Cropping or Padding (Letterbox or Pillarbox)
    Video color format conversion
    – Auto or manual selection of input color format & quantization range
    – Auto or manual selection of output color format, quantization range & saturation range
    – Support for RGB, YCbCr 601, YCbCr 709, YCbCr 2020 color formats
    – Support for Limited or Full quantization range
    – Support for Limited, Full & ‘Extended gamut’ saturation range
    Video frame rate conversion

    Multiple devices on one computer

    Support for connecting multiple USB devices in one system
    Set the device serial number as the device name shown in the system using USB Capture Utility


    USB Capture SDK provide functions including signal status extraction, capture configuration, etc.

    Firmware Upgrade

    Multiple devices in one system can be upgraded simultaneously

    LED Indicator

    Status LEDs indicate the working state of each channel: idle, input signal locked, memory failed or FPGA configuration failed.

    Form Factor

    110.7mm (L) x 56.8mm (W) x 17mm (H)

    Power Consumption

    5V max current: ~0.5 A
    max power consumption: ~2.5 W

    Working Environment

    Operating temperature: 0 to 50 deg C
    Storage temperature: -20 to 70 deg C
    Relative Humidity: 5% to 90% non-condensing