Well, it is possible however you might have issues with your SAT Adapter beeing detected or getting drivers for it.
I have a TVHeadend Server running inside a Bhyve VM with Ubuntu, my main OS is FreeBSD 11.1.
I had to do passthrough of my DVB-S2 PCI-Express Card to the Bhyve VM and everything works fine.
If you want to run natively on FreeBSD you have to get a compatible adapter. Here you have a list of adapters known to work on FreeBSD: https://wiki.freebsd.org/WebcamCompat