This driver suite expects a source tarball, named drivers.tar.gz.
Its content has to match (with respect to vendors enabled) following structure:

# ls -1 ultragrid-proprietary-drivers-20170103/
	EpochLinuxDriver_V5_11_0_19
	ntv2sdklinux_12.4.2.1
	sdk4.3.5.21
	VideoMasterHD_SDK_Linux_v5.21

