Sony Betamax | Fetch Gadgets

A recorder sold inside a television

The first Betamax product to reach American shops was not a bare deck. The Sony LV-1901 was a console: a videocassette recorder built into a wooden cabinet with a 19-inch Trinitron television on top, a 24-hour mechanical timer, a camera input and two television tuners, so that a household could tape one channel while watching another. It went on sale in November 1975 at $2,295. The recorder inside was the SL-6200; in Japan the same console was sold as the LV-1801 with an SL-6300 inside.

The stand-alone deck arrived in spring 1976 with the SL-7200, essentially an SL-6200 with a tuner and a wood-veneer front. That mattered commercially. A VCR that could be plugged into a television a family already owned was a far easier purchase than a piece of furniture carrying its own screen.

What Beta physically was

Betamax recorded onto half-inch (12.7 mm) magnetic tape inside a cassette measuring roughly 15.6 by 9.6 by 2.5 cm, a design descended from Sony's professional U-matic format. The heads sat on a spinning drum and wrote the picture in slanted tracks across the tape, a helical scan with no guard band between tracks, using azimuth recording to keep adjacent tracks from interfering. That density is what made a cassette small enough for a shelf possible at all.

At the original Beta I speed of 4 cm per second, the format delivered about 250 horizontal lines of resolution. VHS, when it arrived, managed roughly 240. Broadcast signals of the period carried 300 to 330 lines, so neither format was transparent, but Sony's was visibly closer. Sony also shipped tricks its rival could not match for years: BetaScan picture search in both directions, and BetaSkipScan, which let a viewer press fast-forward and watch the picture race past until the right spot appeared.

The sixty-minute problem

The weakness was capacity. Early Beta cassettes held one hour at Beta I, which is not enough time for a feature film and awkward even for an evening of television. In 1977 Sony released the SL-8200, a two-speed machine whose half-speed Beta II mode doubled recording time to two hours on an L-500 cassette. It also dropped resolution back to about 240 lines, erasing the format's one clear technical advantage.

JVC's VHS, introduced in Japan on 9 September 1976, had started with two hours at standard play by using a longer tape in a larger cassette. Sony could not simply lengthen the reel, because the cassette shell was smaller by design. Every subsequent answer to the running-time problem, including the Beta III speed that finally pushed NTSC machines past two hours, came after VHS had already taken the argument.

Licensing decided the war

Sony had shown the Beta prototype to other manufacturers in 1974 and expected the industry to settle on one standard. JVC declined and built its own, partly from a conviction that accepting Sony's format would repeat the U-matic arrangement in which Sony dominated. Sony then kept licensing tight while JVC handed VHS to anyone who wanted it, including Matsushita, RCA, Philips and a long tail of budget brands.

The arithmetic followed. Betamax held the whole market in 1975 because VHS did not exist yet. By 1980 VHS controlled 60 percent of the North American market, and by 1981 Beta's share of American VCR sales had fallen to 25 percent. In Britain Beta went from 25 percent in 1981 to 7.5 percent in 1986. By 1984, 40 companies were building VHS equipment against 12 building Beta. Sony conceded in 1988 by adding VHS recorders to its own line.

The lawsuit that outlasted the hardware

Universal Studios and Walt Disney Productions sued Sony and its distributors in 1976, arguing that a company selling a machine capable of copying copyrighted works was liable for what buyers did with it. The case reached the Supreme Court, which decided on 17 January 1984 by five votes to four that recording broadcast television to watch later was fair use, and that the recorder had substantial noninfringing uses. The ruling created a legal safe harbour for home recording and set the test later argued over in MGM v. Grokster in 2005.

The studios' feared outcome never arrived. Videotape rental and sell-through became a larger business than the cinema release for many films, and the same companies that litigated against the VCR spent the following decade fighting for shelf space in video shops.

Good hardware, wrong decade

Betamax kept improving long after it had lost the shops. Beta Hi-Fi arrived in June 1983 with frequency-multiplexed audio good for an 80 dB dynamic range. SuperBeta followed in early 1985, shifting the luminance carrier to reach about 290 lines, close to a clean copy of a broadcast. ED-Beta in 1988 pushed luma resolution to roughly 500 lines using metal-formulation tape borrowed from Betacam SP. Sony's Betamovie, the first consumer camcorder, used full-size Beta cassettes and could only record, not play back, a limitation that handed the camcorder market to VHS-C and later to Sony's own Video8.