HDMI vs HD-SDI vs DVI

R

rc444

Well-known member
What's the difference between HDMI, HD-SDI and DVI?

Are all of the above more-or-less an uncompressed version of firewire that allows 4:2:2 compression? Is that right? Where could you pick up one of these cords as I have yet to see what they look like, and am hard pressed to find them in my local electronics store.

Also, does anyone know what computers come bundled with these ports, because I haven't seen any. As far as I know, you need a separate AJA device just for this. I'm surprised Apple isn't including HD-SDI with their new iMacs.

Thanks

RC
 
DVI = Digital (computer) monitor interface. Found on most computers & monitors these days. Does not carry audio, or much other useful meta-data. Can carry analog VGA signal in some variants too. Used in the IT/Computer world. Has it's own connector & cable type.

HDMI = Digital A/V interface. Found on most high end A/V components - and almost all with HD capabilities. Carries 5.1 surround sound audio (in addition to the same video signals as DVI), but not much else. Can't carry Analog signals. Used in the Consumer & (increasingly) professional A/V presentation world.

SDI = Digital production video & audio interface. THE signal of the professional & broadcast video & television world. Carries broadcast quality video, multiple channels of embedded audio, and other meta-data like Time-Code. Available in both SD and HD variants. Can transport signals over a considerable distance (much further than DVI or HDMI) and can be transmitted relatively easily along Fiber for really long runs. Uses Coaxial cable, almost always with BNC connectors. The same cables can be used for analog video signals too .. allowing high compatibility and ease of wiring. Used almost exclusively in the high end video production world.


- Mikko
 
Last edited:
You must log in or register to reply here.
Back
Top