What about long cable runs?
Like all cable types, signal strength deteriorates over long cable runs with HDMI. While there is no official "maximum cable" length determined by the HDMI Licensing group, they hint at 10 meters (about 33 feet)
being the rough guide as when users may begin to experience problems. That's definitely not a hard-and-fast rule--we've had very few issues using a 65-foot HDMI cable from Accell in CNET Labs and Monoprice's 75-foot HDMI cable
has positive user reviews. Cable quality isn't the only factor--the individual HDMI inputs and outputs on your HDTV and high-def components can affect signal quality over long distances too--so you'll need to experiment to see what works in your setup. Again, the best advice we can give is to make sure you buy from a retailer with a good return policy.
Systems and Network Engineer
Certified CompTia Network +, A +