Hi I have a 4 x 4 hdmi matrix installed at my house. All 4 tv's are connected via 2 x cat6 cable with baluns. I'm trying to connect my Samsung dvr to 1 of the hdmi inputs on the matrix so I can view the CCTV on all of my tv's. I have found the below product but not sure if it will convert my dvr video output which is bnc to my matrix. HD-SDI to HDMI Converter | SDI to HDMI Adapter Hope someone can confirm? Thanks again.