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April 02, 2008
More detail on HD compression
What Comcast's Crunched HD Looks Like - Todd Spangler - Blog on Multichannel News
In the black art of video compression, the trick is to fool the human visual system into seeing things that aren't there.
All digital video is compressed. The technology that does this removes a lot of data, stripping out visual information in clever ways so it can be packed down, sent over a wire or satellite, then unpacked on the viewing end to a TV set.
Posted by roymond at April 2, 2008 01:09 PM