Hi,
I'm now a brand new, proud owner of Vmix HD Pro. x64 version seems to work really nicely.

One thing that would be really useful, would be the option to monitor the video levels for camera inputs. Nearly not all lower-tier pro cameras have a usable histogram or brightness waveform monitor, and with HDMI consumer cameras there are often no way to evaluate the exposure.

The histogram or waveform monitor could update e.g. once every second, if real-time monitoring is too heavy for CPU during stream encoding.