Only used for a little while. They worked well they just introduced a slight delay since it is going over the network.

From manufacturer:

√ THREE CONFIGURATION OPTIONS: The J-Tech Digital JTD-H264-N2N Encoder and Decoder is a flexible and easy-to-use HDMI Device that extends your HDMI signal up to 400 feet (120 meter) and supports a Point-to-Point connection, Point-to-Many & a Many-to-Many Broadcasting configuration, for multiple HDMI video sources and displays.

√ BETTER QUALITY WITH LOWER BANDWIDTH: This extender encodes and decodes HDMI signals using H.264 compression and transmits the signal through standard TCP/IP and transmit via ethernet cable or LAN. This extender can be installed on your home network with minimum bandwidth consumption.

√ EASY SWITCH FUNCTION: If you have multiple transmitters connected to different HDMI sources, you can switch between those sources from the Receiver side with front panel buttons, IR Remote or PC software. These extenders can be connected to a network switch that supports IGMP.

√ VLC PLAYER COMPATIBLE: Just enter your multicast group IP address and play video stream using VLC player. The following resolutions are supported: 1080p/1080i@60Hz, 720p/720i@60Hz, 576p/576i@50Hz, 480p/480i@60Hz.