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CU331-HN Full HD HW H.264 USB 2.0 capture box

Full HD HW H.264 USB 2.0 capture box

  • Input resolution 1920 x 1080 60fps
  • Capturing resolution 1920 x 1080 30fps
  • HDMI video input (Pass-through from HDMI input)
  • 3.5mm Stereo Audio input (Pass-through from 3.5mm audio input)
  • Hardware H.264 encoding

The CU331-HN Full HD HW H.264 USB 2.0 capture box is a complete, flexible and portable solution for digital video and audio capturing. Supporting HDMI 1.4a standard, the CU331-HN enables compressed and lossless Full HD (1920 x 1080 30 fps) video capturing. Seamless integration in vertical applications, such as: video wall, digital signage, Kiosk which require high video quality is made easy through the use of the AVerMedia SDK. Windows and Linux driver support is included making the CU331-HN the best choice for your digital capturing needs.

Hardware H.264 Compression

H.264 hardware encoding

The CU311-HN is equipped with an advanced built-in H.264 hardware encoder, which enables the system to encode without impacting the CPU’s computing power but still maintain high quality video. This feature will help balance the loading and will increase the system’s reliability. As a result, the CU311-HN will significantly assist to reduce the computing efforts on hardware and software in order to focus on other important parts of application in hand.


The CU311-HN offers HDMI input and output allowing for an extra monitor for live previewing. It eliminates the need for an additional video splitter to achieve identical functionality. The pass-through function guarantees a smooth playback even while recording, which typically requires considerable CPU usage with a regular PC.

Audio & Video Sync

To enhance playback experience and flexibility, the CU311-HN is able to capture both audio and video from different sources and combine them without AV-sync error. Making it an ideal solution for applications that require the capture of video and audio sources with perfect synchronization to ensure outstanding content quality.

Connection Diagram

CU331-HN connection diagram

Video-processing software support. Highly compatible

AVerMedia SDK

AVerMedia SDK: industrial customers can develop vertical applications flexibly and efficiently by using a specifically designed SDK, with features such as device control, media capture, A/V processing, and more. Learn more about AVerMedia SDK.

Host InterfaceUSB2.0
Audio InterfaceHDMI / 3.5mm jack
Audio FormatPCM
Audio Sampling Rate32KHz, 44.1KHz,48KHz
Connector TypeHDMI
Input InterfaceHDMI
Color FormatYV12
Color Depth8-bit
Channel No.1Ch
Max. Input Resolution1920 x 1080 60fps
Max. Recording Resolution1920 x 1080 30fps
Encoding ModeHardware Encoding (H.264)
Multi-Card SupportNo
Supported OSWin 7/ 8.1/10 (32/64 bit)*
Form factorBox
Dimension (L x W)133mm x 69mm
Power Consumption2.6W
Operating Temperature0°C ~50°C
Operating Humidity5% ~ 80% Relative Humidity
Safety CertificationFCC / CE

*Linux driver coming soon