Copland was one of Apple's biggest failures. It was an attempt to bring MacOS up-to-date in the early to mid 1990s but after several years of expensive development and project chaos, Apple was left with a mess which would crash even if you blinked too fast. Copland was cancelled, not even making it to a proper developer release and Apple looked elsewhere for the future, which ended up being MacOSX...
But Copland has been lost to time, or has it? A few builds did make it out into the wild and on this blog the sheer horror of build D7E1 is revealed (yes it crashes a lot). It did introduce a lot of technology which made it into subsequent versions of MacOS however. To me Copland is a bit of a mythical beast so seeing this video is like seeing footage of Bigfoot walking down Erdington High Street.
