curious bits about the VHS format:- It was launched in September 1976. The Young Teacher was the first and A History of Violence (2006) was the last movie released on home video in the North American market.
- Since good tracking depends on the exact distance between the rotating drum and the fixed control/audio head reading the linear tracks, which usually varies by a couple of micrometers between machines due to manufacturing tolerances, most VCRs offer tracking adjustment, either manual or automatic, to correct such mismatches.
- VHS initially offered a longer playing time than the Betamax (Sony) system, and it also had the advantage of a far less complex tape transport mechanism. Although VHS and Betamax were competing formats, several of VHS's critical technologies were licensed from Sony. Early VHS machines could also rewind and fast forward the tape considerably faster than a Betamax VCR.
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