HDMI vs DVI what is the difference?When looking at the differences, HDMI vs DVI actually have more in common then differences. They are both all digital, they also are all based on similar specifications since HDMI was derived from the DVI specification. There are two big differences:
HDMI incorporates content protection called High Definition Content Protection (HDCP). HDMI supports audio in addition to digital video.
(DVI only supports digital video)HDMI vs DVI are they compatible?In reviewing HDMI vs DVI, we noted a few differences. So the big question is are HDMI and DVI compatible? Since DVI is the predecessor to HDMI, HDMI and DVI are identical as far as video is concerned. Therefore, video backward compatibility xists. However, DVI will not support digital audio. For xample, if you have an older DVI connection on your source and a HDMI connector on your display, a HDMI to DVI cable is all that is needed in order to view the video. A separate audio cable (TOSLINK or SPDIF) will be needed to carry the digital audio. See our HDMI to DVI Converter article for all the details.
A Warning about Cable lengthThe HDMI specification does not define a maximum cable length.
HDMI 1.3 defined two categories of cables: Category 1 (standard or HDTV) and Category 2 (high-speed or greater than HDTV) regardless, neither HDMI or DVI works well over distances greater then 15 feet.
If you need a cable longer then 15 feet consider top of the line cables such as our Cheap (Price not quality) HDMI cables or Monster cables. Some companies also offer amplifiers, qualizers and repeaters that can help bridge longer distances.
read more
http://www.home-theater-automation-and-electronics.com/HDMIvsDVI.html
