How to Simulcast Audio and Video over internal LAN?

Can you patch the two rooms together via a Cat5 with no switch or router involved, in other words no active devices?

If you can do that, you just need a Camcorder with HDMI out, HDMI-to-Cat5 converters, and a large screen HDTV:
- Camcorder with HDMI output
- One HDMI to Cat5 sender, this is the sending uint, connect the Camcorder HDMI out to this device
- One Cat5 to HDMI receiver, this would be in the second room and would connect to the large screen TV
- One large screen HDTV with HDMI input

You need something similar to this, but it cannot pass through active devices, this is a cabled solution.
http://www.amazon.com/gp/product/B001PT1A7C/ref=pd_lpo_k2_dp_sr_1?pf_rd_p=486539851&pf_rd_s=lpo-top-stripe-1&pf_rd_t=201&pf_rd_i=B001CJ9392&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=1ARNWZ9Z47XR2RD6FYNW

If you decide to try this solution, I suggest you get it ahead of time and test it if possible.
 

@pgetchell:

Just a heads up. Looks like those Sabrent HDMI-to-Cat5 extenders require 2 Cat5 cables to work. You might need 2 Cat5 patch cables between the two rooms.

good idea, and i actually have one of these things.  (Extron).  

but i need somethign routable, over the LAN.  

do i need an appliance like a Media-Pointe DMR?  or perhaps i can just load windows media encoder on a fast PC, and stream live from a built-in service?

I may be able to something like Windows Expression Encoder Pro (Demo available) and decent compatible hardware, as it seems to do what we are asking – live IP-based streaming; “you can publish H.264 or VC-1 content, broadcast live events with live Smooth Streaming”

From their word choice, it seems there are other products that do the same thing, but I don’t know what they are.  anyone know of other options for software based streaming solutions that can live on one computer/box?

http://www.microsoft.com/expression/service-packs/Encoder.aspx

I guess i'd just need a decent computer with a good-enough input method, (i.e. video capture card) to test this?