There are HDMI over cat5/6 cable that are basically point to point and are basically just replacing the cable to transmit a longer distance.
The more expensive products that claim to translate HDMI into IP and send over an ethernet network. I'm not sure if they are just turning into ethernet packets and only work on a LAN or if they turn into routable IP packets.
Well sure. I guess I should be more specific, but the points was that as long as it works in a local Ethernet network, you are fine, as you can fix it reasonably easy by just encapsulating packets. And as long as you don't encrypt, you don't even need much/expensive hardware to handle e.g. 10 Gb/s Ethernet over an IP network.
If you just have a passive thing that translates HDMI connectors to RJ-45 connectors, Ethernet won't help you. But if you use Ethernet, you can also use IP. That is all.
There are HDMI over cat5/6 cable that are basically point to point and are basically just replacing the cable to transmit a longer distance.
The more expensive products that claim to translate HDMI into IP and send over an ethernet network. I'm not sure if they are just turning into ethernet packets and only work on a LAN or if they turn into routable IP packets.