These days, if you're just wiring to a single workstation in a nearby next room, 50 meter active optical Thunderbolt 3/4 cables can carry 5K+ DisplayPort video passthrough and data from your USB peripherals.

(It's "passthrough" and not "uncompressed" because DisplayPort may use DSC depending on the resolution and frame rate.)

US$500 for an optical cable can be a lot cheaper than paying for HDMI extender sender and receiver boxes.

In a modern video editing system it's still a non trivial challenge, because you can't just go using any COTS HDMI extension system, which might be good for 2160p30 at 420 color space, or maybe 2160p60 at 420 color space, but may NOT be capable of 2160p60 at 422 or 444 color space. Or may not function for DCI resolution at 4096x2160. Or anything 8K.

There's plenty of HDMI2.0 compliant "video over ethernet cable or fiber things" which are the ordinary COTS products that may not be sufficient for serious video editing needs.

People on video editing workstations these days are using higher end monitors that can be trusted to work in 10bit color and to match a certain color space grading.

On the other hand it's a lot easier these days to have a relatively quiet video editing workstation that has 8 to 16TB of local, pci-express bus attached NVME storage for work space, and that same workstation can have a not-very-expensive 100GbE NIC in it attached to some large/noisy storage elsewhere.

> some that even use ethernet with hardware encoding/decoding

We had those, the problem is that they loose bitdepth. They were also fucking unreliable. We had a lot HDMI extenders and they worked for 1920x1080, and sometimes 2k if you were lucky.

we used them for the "prosumer" LCD projectors we had the in the review rooms. They didn't work so well for the massive christie projectors. (I seem to recall they abused 3g-SDI to get resolution)