Wondering if anybody has experience with long (13 m) DVI-D or HDMI cabling.

I'm about to move to a new house and our home theater gear can finally be setup in a more "optimal" way (read: we'll own the place so can make holes in walls and mount the projector to the roof), but the lingering concern I have is that the cable we'll run for video from the source equipment will be too long and we'll lose too much image quality along the way.

I've searched a few enthusiast forums and the like; and found a few guides but ultimately, for every guide/forum that recommended a maximum cable length of 10m, with boosting equipment above that length, i'd find a forum/guide claiming that you could go as far as 20m without a booster/amplifier for video signal.

So, does anybody have experience with long HDMI or DVI-D cabling?? Basically the cable I'm going to need will run approx 13m, from source to input.

i think mines about 8ms. doesnt really help u, but ive had no issues.

i found the same thing as you when i built my home theatre. 10 m is the max they support. Some people have got them working @ 15 m, but i wouldnt wanna spend a few hundred on a cable to try. see if you can reorganize your equipment to make it 10m or less.

i'd consider getting a hdmi splitter that does signal regeneration & run a 3-5m hdmi->hdmi cable from it to your projector, then a std 10m hdmi->dvi-d cable back to the computer. coz surely you'll want to have an input from your dvd player to the projector as well?
there are some pretty sweet remote control splitters available... bit exxy though coz hdmi is still a bit new :/

What's the highest resolution do projectors support up to these days?

Yeah Demon, a HDMI splitter dooby is the backup plan; should I not be able to just run 2 long cables port to port.

My amplifier handles all of the video signals going to the projector; switching from all input sources to either HDMI, DVI-D, Svideo or whatever; so 1 cable will suffice to the projecor - also really handy because it hopefully means the electrician will be able to wire it all up abit more quickly and charge me less! :)

What's the highest resolution do projectors support up to these days?

1080P (1920x1080)