Again, doesn't happen, read any of the articles about HDMI and digital signals. It either works or it doesn't. If you stretch it to the point where the signal doesn't get through, the image just drops out.
This post shows up as like the 1st or 2nd link on Google when you search for HDMI cable is blurry. I registered this account just to reply and thank you for this knowledge! Sorry if it bumps it up to the top, but I think my story is kind of interesting and may help other people searching for a solution.
I ran a 50' hdmi cable through my ceiling, into a conduit outside, then back in the house to my stereo. Don't ask about that part, it was the only logical path that would hide the cable!
So I finally finished running the cable and turned on my projector only to see a blurry picture. I had tested the picture before running the cable so my instinct was that I had damaged the cable some how. It made perfect sense to me that maybe I had stretched it or messed up the end connectors. Someone even posted in this thread that it was possible to stretch an hdmi cable and cause problems to it.
I was ready to tear out the cable, spend $100 buying a new 50' cable and start over. But then I read your posts insisting that an HDMI cable either works or doesn't, with no in between. So I sat back down and just stared at the cable for at least 30 minutes, wondering what else could cause the blurry picture.
30 minutes later, I got the grand idea to poke around in the ceiling and instantly the picture cleared up. It turned out that the HDMI cable was brushing up against the central air heating ducts or other wiring in the ceiling and caused some sort of frequency interference. All I had to do was move the cable about 2 inches to the right in the attic space and my problem was fixed!
Anyways, thanks again for insisting that the HDMI blurriness couldn't be caused by the cable and for anyone else with the same problem, don't forget to check for things that could be causing interference!
