I buy a Seetec HDMI to USB3.0 capture from Alibaba Trade Assurance.
I think it is a really nice tool.So I would like to share it here.
-No drivers to install and works with most software on PC and Mac.
-Allowing live video streaming, webcasting or video conferencing to Skype, Facebook Live, Youtube Live,etc.
-Can capture various HD video sources with resolutions up to 1920x1200p @ 60fps.
-Get power from the PC directly.
-USB3.0, 300-350MB/s throughput and it is compatible with USB 2.0 40MB/s.
Frame Rate: 25/29.97/30/50/59.94/60 fps
The Support of OS
Windows Server 2008 R2
Linux (Kernel version 2.6.38 and above)
OS X (10.8 and above)
You can check it on the Alibaba link:
Hope this will help you.