According to the HDMI Specification, Version 1.4b, the maximum cable length for a standard HDMI cable is 15 feet (4.6 meters). For lengths greater than 50 feet (15.2 meters), a high-speed HDMI cable with Ethernet is required. There are also active cables available that can be used for lengths up to 100 feet (30.5 meters) without degradation of the signal quality.