I wanted a 30 foot long hdmi cable without having to pay 50 dollars for it. In the past I have simply spliced different types of cables together. HDMI cables are another beast entirely. My boy and I spent 2.5 hours splicing and soldering a 30 foot long cable. We took a six foot one, cut it in half, and took two Ethernet cables, 27 feet each and spliced them together. I thought the shielded wires were all grounded so I figured even though the hdmi cable had 19 wires and the two Ethernet cables only had 16 total between the two it would work. I was wrong, really wrong. The wires are shielded for a reason. HDMI signals are digital and very sensitive to spurious signals it would seem. The cable didn’t work. I got frustrated so I took another 3 foot hdmi cable and spliced out just one wire. I took that spliced wire and attached one end to the end of a 27 foot Ethernet wire and spliced it into the other end. It turns out the signal just couldn’t make it 30 feet. When I spliced the 3 foot cable back together it worked just fine. I guess HDMI cables have a length limit like USB cables do.