The Supported Hardware page on our web site lists all of the video capture hardware
we have tested with vMix ourselves and is known to be working.

http://www.vmix.com.au/supported-hardware.aspx

Please do not ask us directly if model x of device y works with vMix. If we have tested it, it will appear on the web site above.

Other hardware out there should work as long as it supports the Microsoft DirectShow API.
If you have some hardware that is not listed above, feel free to post a thread to see if some other users have already tried it.

Thanks,

Martin
vMix