4K video must be supported by both the operating system and application you are running in, as well as requires a 4K monitor.  Please check with your software vendor for that support. 
 
Even if you do not have the 4K support in software today, there are other benefits to a 4K sensor onboard the camera -- video quality, ability to support HDR, better quality zoom and zoom depth are all benefits to the customer of a 4K video sensor.
 
If you use the proper video capture application (e.g.,. Camera for Windows 10 or SwiftCapture 1.0.2 for Mac OS) you can record 4K video from your BRIO/BRIO 4K webcam to your computer. You will need to use a 4K video player on a 4K-supported monitor to properly playback your captured video (ex. VLC for PC or Mac: http://www.videolan.org/vlc/index.html).
 
To take advantage of 4K with your BRIO/BRIO 4K , you’ll need to have a system with the following requirements:

• USB 3.0 Port — Allows for more data to be transmitted (5gb/s compared to 480mb/s with USB 2.0).
• Application support for 4K — Some applications will require additional codecs to support 4K resolution. Consult your application developer’s website or help resources for more information.
• 4K monitor and supporting drivers — Make sure that you have a 4K-capable monitor and the drivers to support 4K resolution. Consult your monitor’s manufacturer website for more information.
• Windows 10 — Windows 7 supports a maximum resolution of 1080p/30fps and is not capable of 4K resolution.
• USB host controller fully updated with the latest drivers