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The Betamax was basically Sony's "12.7 mm (0.5 inch) home videocassette tape recording format introduced in 1975 and derived from the earlier, professional 19.1 mm (0.75 inch) U-matic video cassette format." Commercial after the break.

This entry was posted on 03/24/2007 02:52am and is filed under Gadgets, Video .
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