HDMI out, HDbaseT in?

[Tjalfe]

if i read it right, they were using 100mbit - so maybe quadrature (i forget the term) encoding of the signal over the low frequency waveform ?

QAM, but probably with a large constallation. They use something like 256QAM downstream on cable modems and 64QAM up.
I guess it could give enough bandwidth, but the video cables have to be kept separate from your Ethernet network to not cause issues, I am thinking.

[degrub]

i think if it is twisted pair, then any imposed field effects would implicitly cancel.

[Dr Mordrid]

A comparison table courtesy of PhysOrg.com