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The Video Home System, better known by its abbreviation VHS, is a recording and playing standard developed by Victor Company of Japan, Limited
JVC

, usually referred to as JVC, is an international consumer and professional electronics corporation based in Yokohama, Japan which was founded in 1927....
 (JVC) and launched in Europe and Asia in September 1976, and the United States in June 1977.






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Vhs Cassette Bottom
Vhstapeopen
The Video Home System, better known by its abbreviation VHS, is a recording and playing standard developed by Victor Company of Japan, Limited
JVC

, usually referred to as JVC, is an international consumer and professional electronics corporation based in Yokohama, Japan which was founded in 1927....
 (JVC) and launched in Europe and Asia in September 1976, and the United States in June 1977. By the 1990s, VHS became a standard format for consumer
Consumer

Consumer is a broad label that refers to any individuals or household that use Good generated within the economic system. The concept of a consumer is used in different contexts, so that the usage and significance of the term may vary....
 recording and viewing, after competing in a fierce format war
Videotape format war

The videotape format war was a period of intense competition or "format war" of incompatible models of video cassette recorders in the late 1970s and the 1980s....
 with Sony
Sony

is a multinational corporation list of conglomerates corporation headquartered in Minato, Tokyo, Japan, and one of the world's largest media conglomerates with revenue exceeding US$99.1 billion ....
's Betamax
Betamax

Betamax is an obsolete home videocassette tape recording format developed by Sony, and released on May 10, 1975. The cassettes contained 1/2 inch wide videotape in a design similar to the earlier, professional 3/4 inch U-matic videocassette format....
 and, to much lesser extents, Philips
Philips

Koninklijke Philips Electronics N.V. , usually known as Philips, is a Netherlands electronics company. It is one of the largest electronics companies in the world, founded and headquartered in the Netherlands....
' Video 2000
Video 2000

Video 2000 was a consumer electronics Videocassette recorder system and videotape Standardization developed by Philips and Grundig to compete with JVC's VHS and Sony's Betamax video technologies....
, MCA
Music Corporation of America

MCA, Inc. was an United States corporation in the music and television businesses. MCA published music, booked acts, ran a record company, and distributed television productions and home videos....
's Laserdisc
Laserdisc

The Laserdisc is an obsolete home video disc format, and was the first commercial optical disc storage medium. Initially marketed as Discovision in 1978, the technology was licensed and sold as Reflective Optical Videodisc, Laser Videodisc, 'Laservision, 'Disco-Vision, 'DiscoVision, and MCA DiscoVision...
 and RCA
RCA

RCA Corporation, founded as Radio Corporation of America, was an electronics company in existence from 1919 to 1986. Today, the RCA is owned by the France conglomerate Thomson SA through RCA Trademark Management S.A., a company owned by Thomson....
's Capacitance Electronic Disc.

VHS initially offered a longer playing time than the Betamax 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 are licensed from Sony
Sony

is a multinational corporation list of conglomerates corporation headquartered in Minato, Tokyo, Japan, and one of the world's largest media conglomerates with revenue exceeding US$99.1 billion ....
. Early VHS machines could rewind and fast forward the tape considerably faster than a Betamax VCR because they unthreaded the tape from the playback heads before commencing any high-speed winding. Most newer VHS machines do not perform this unthreading step, as head-tape contact is no longer an impediment to fast winding, owing to improved engineering.

DVD
DVD

DVD, also known as "Digital Versatile Disc" or "Digital Video Disc,"is a popular optical disc data storage device media format. Its main uses are video and data storage....
 rentals surpassed VHS rentals in the US in 2003, surprising some industry officials. By 2006, most major film studios stopped releasing new movie titles in VHS format, opting for DVD-only releases. Many leading retailers have stopped selling pre-recorded movies on VHS, although VHS pre-recorded cassettes are still popular with many collectors, mainly because there are thousands of titles that are still unavailable on DVD or other newer formats. In developing countries, the VHS is still a major medium to distribute home video. On December 23, 2008, the last major supplier of pre-recorded VHS tapes, Distribution Video Audio Inc. of Palm Harbor, Florida, shipped its final truckload.

Technical details

The VHS cassette is a 7?" wide, 4" deep, 1" thick (187 mm × 103 mm × 25 mm) plastic clamshell held together with 5 Philips head screws. The flip-up cover that protects the tape has a built-in latch with a push-in toggle on the right side, as seen in the Bottom View. The VHS cassette also includes an anti-despooling mechanism as seen in the Top View, several plastic parts near front label end of the cassette between the two spools. The spool brakes are released by a push-in lever within a 1/4" hole accessed from the bottom of the cassette, about 3/4" in from the edge label. There is a clear tape leader at both ends of the tape to provide an optical auto-stop for the VCR transport mechanism.

The recording medium is a ½ inch (12.7 mm) wide magnetic tape
Magnetic tape

Magnetic tape is a medium for magnetic recording generally consisting of a thin magnetizable coating on a long and narrow strip of plastic. Nearly all recording tape is of this type, whether used for recording Audio frequency or video or for computer data storage....
 wound between two spools, allowing it to be slowly passed over the various playback and recording heads of the video cassette recorder. The tape speed is 3.335 cm/s for NTSC
NTSC

NTSC is the analog television system used in most of the Americas, Japan, South Korea, Taiwan, the Philippines, Burma, and some Pacific island nations and territories ....
, 2.339 cm/s for PAL
PAL

PAL, short for Phase Alternating Line, is a color-encoding system used in broadcast television systems in large parts of the world. Other common analog television systems are SECAM and NTSC....
. A cassette holds a maximum of about 430 m of tape at the lowest acceptable tape thickness, giving a maximum playing time of about 3.5 hours for NTSC and 5 hours for PAL at "standard" (SP) quality. Other speeds include LP and EP/SLP which double and triple the recording time, for NTSC regions. These speed reductions cause a slight reduction in video quality (from 250 lines to 230 lines horizontal); also, tapes recorded at the lower speed often exhibit poor playback performance on recorders other than the one they were produced on. Because of this, commercial prerecorded tapes were almost always recorded in SP mode. As with almost all cassette-based videotape systems, VHS machines pull the tape from the cassette shell and wrap it around the head drum. VHS machines, in contrast to Betamax
Betamax

Betamax is an obsolete home videocassette tape recording format developed by Sony, and released on May 10, 1975. The cassettes contained 1/2 inch wide videotape in a design similar to the earlier, professional 3/4 inch U-matic videocassette format....
 and Beta's predecessor U-matic
U-matic

U-matic is the name of a videocassette format first shown by Sony in prototype in October 1969, and introduced to the market in September 1971....
, use an M-loading system, also known as M-lacing, where the tape is drawn out by two threading posts and wrapped around the head drum (and other tape transport
Tape transport

Tape transport is the generic term for all parts of a magnetic tape player or tape recorder that the actual tape passes through. Transport parts include, but are not limited to, the head, capstan, pinch roller, tape pins, and tape guide....
 components) in a shape roughly approximating the letter M
M

M is the thirteenth letter of the modern Latin alphabet. Its name in English language is spelled em ....
.

VHS tapes have approximately 3 MHz of video bandwidth, which is achieved at a relatively low tape speed by the use of helical scan
Helical scan

Helical scan is a method of recording high bandwidth signals onto magnetic tape. It is used in video tape recorders, video cassette recorders, digital audio tape recorders, and some computer tape drives....
 recording of a frequency modulated
Frequency modulation

In telecommunications, frequency modulation conveys information over a carrier wave by varying its frequency . In analog signal applications, the instantaneous frequency of the carrier is directly proportional to the instantaneous value of the input signal....
 luminance (black and white) signal, with a down-converted "color under
Heterodyne

In radio and signal processing, heterodyning is the generation of new frequencies by mixing, or multiplying, two oscillating waveforms. It is useful for modulation and demodulation of signals, or placing information of interest into a useful frequency range....
" chroma
Chrominance

Chrominance , is the signal used in video systems to convey the color information of the picture, separately from the accompanying luma signal....
 (color) signal recorded directly at the baseband. Because VHS is an analog system, VHS tapes represent video as a continuous stream of waves, in a manner similar to analog TV broadcasts. The waveform per scan-line can reach about 160 waves at max, and contains 525 scan-lines in NTSC
NTSC

NTSC is the analog television system used in most of the Americas, Japan, South Korea, Taiwan, the Philippines, Burma, and some Pacific island nations and territories ....
 (486 visible), or 625 lines in PAL
PAL

PAL, short for Phase Alternating Line, is a color-encoding system used in broadcast television systems in large parts of the world. Other common analog television systems are SECAM and NTSC....
 (576 visible). In modern-day digital terminology, VHS is roughly equivalent to 320 pixels of horizontal resolution with a signal-to-noise ratio of the image at 43 dB.

JVC would counter 1985's SuperBeta with VHS HQ, or High Quality. The frequency modulation of the VHS luminance
Luminance (video)

Relative luminance follows the Luminance, but with the values normalized to 1 or 100 for a reference white. Like the photometric definition, it is related to the luminous flux density in a particular direction, which is radiant flux density weighted by the Luminosity_function of the CIE Standard Observer....
 signal is limited to 3.1 megahertz which makes higher resolutions impossible, but an HQ branded deck includes luminance noise reduction, chroma noise reduction, white clip extension, and improved sharpness circuitry. The effect was to increase the apparent horizontal resolution of a VHS recording from 240 to 250 lines. The major VHS OEM
Original Equipment Manufacturer

OEM stands for "Original Equipment Manufacturer".An original equipment manufacturer, or OEM is typically a company that uses a component made by a second company in its own product, or sells the product of the second company under its own brand....
s resisted HQ due to cost concerns, eventually resulting in JVC reducing the requirements for the HQ brand to white clip extension plus one other improvement.

In 1987 JVC introduced the new format called Super VHS which extended the bandwidth to over 5 megahertz, yielding 420 lines horizontal (equivalent to 560x486 in digital terminology). For comparison DVD is 540 lines (720 pixels) horizonal. The chroma resolution remained the same at approximately 0.6 megahertz bandwidth or 30 lines horizontal, as was common across analog tape standards from Umatic to VHS to ED Betamax. Even a live NTSC broadcast is limited to 120 chroma lines maximum. (For comparison DVD is 240 chroma horizontal.)

Audio Upgrade from Lo-Fi Monaural to Hi-Fi Stereo
In the original VHS format, audio was recorded as a baseband (unmodulated) in a single linear track, at the upper edge of the tape. The recorded frequency-range was dependent on the movement of the tape past the audiohead, which for the VHS SP mode, resulted in a mediocre frequency response of roughly 100 Hz to 10 kHz. The signal-to-noise ratio
Signal-to-noise ratio

Signal-to-noise ratio is an electrical engineering measurement, also used in other fields , defined as the ratio of a signal power to the noise power corrupting the signal....
 was an acceptable 42 dB. Both parameters degraded significantly with VHS's longer play modes, with EP frequency response peaking at 4kHz.

More expensive decks offered stereo audio recording and playback. Linear stereo, as it was called, fit two independent channels in the same space as the original mono audiotrack. While this approach preserved acceptable backward compatibility with monoaural audioheads, the splitting of the audiotrack degraded the signal's SNR to the point that audible tape-hiss was objectionable at normal listening volume. To counteract tape-hiss, decks applied Dolby B noise-reduction for recording and playback. Dolby B dynamically boosts the mid-frequency band of the audioprogram on the recorded medium, improving its signal strength relative to the tape's background noise floor, then attenuates the mid-band during playback. Dolby B is not a transparent process, and Dolby-encoded program material will exhibit an unnatural mid-range emphasis when played on non-dolby capable VCRs.

High-end consumer recorders took advantage of the linear-nature of the audiotrack, as the audiotrack could be erased and recorded without disturbing the video-portion of the recorded signal. Hence, "audio dubbing" and "video dubbing", where either the audio or video are re-recorded on tape (without disturbing the other), were supported features on prosumer editing-decks. Without dubbing capability, an audio or video edit could not be done in-place on master cassette, and requires the editing output be captured to another tape, incurring generational loss.

Studio film releases began to emerge with linear-stereo audiotracks in 1982. From that point onward nearly every home-video releases by Hollywood featured a Dolby-encoded linear-stereo audiotrack. However, linear-stereo was never popular with equipment makers or consumers.

Around 1985, JVC added HiFi audio to VHS (in response to Betamax's introduction of Beta Hi-Fi.) Both VHS HiFi and Betamax HiFi delivered flat full-range frequency-response (20 Hz to 20 kHz), excellent 70 dB S/N ratio (in consumer space, second only to the audio compact-disc), and studio-grade channel-separation (more than 70dB.) This method of VCR audio, known as audio frequency modulation (AFM), recorded each of the 2 stereo channels (L, R) on a frequency-modulated carrier, embedding the modulated audio-signal pair into the video-signal. To avoid crosstalk and interference from the primary video-carrier, VHS's implementation of AFM relied on a form of magnetic recording called depth multiplexing
Multiplexing

In telecommunications and computer networks, multiplexing is a process where multiple analog message signals or digital data streams are combined into one signal over a shared medium....
. The modulated-audio carrier pair was placed under the luminance carrier (below <1.6MHz), and recorded first. Subsequently, the video-head erases and re-records the video-signal over the same tape-surface, but video-signal's higher center-frequency results in a shallower magnetization of the tape, allowing both the video and residual AFM-audio signal to coexist on tape. (PAL versions of Beta HiFi use this same technique.) During playback, VHS HiFi recovers the depth-recorded AFM-signal by subtracting the audiohead's signal (which contains the AFM-signal contaminated by a weak image of the video-signal) from the videohead's signal (which contains only the video-signal), then demodulates the left and right audio-channels from their respective frequency-carriers. The end result of the complex process was audio of outstanding fidelity, which was uniformly solid across all tape-speeds (EP or SP.) Since JVC had gone through the complexity of ensuring HiFi's backward compatibility with non-HiFi VCRs, virtually all studio home-video releases contained HiFi audiotracks (in addition to linear-stereo.)

The sound quality of HiFi VHS stereo was, for most listeners, nearly or totally indistinguishable from the quality of a CD, particularly when recordings were made on prosumer VHS machines that had a manual audio recording level control. This very high quality attracted the attention of amateur and hobbyist recording artists. Home recording
Home recording

Home recording means recording at home rather than in a professional studio. Its popularity continues to climb due to the increase of affordable digital and analog circuit Sound recording and reproduction....
 enthusiasts occasionally recorded high-quality stereo mixdowns and master recording
Master recording

A master recording is an original recording, from which copies may be made.When recording on to magnetic or digital tape, the original tape is known as the master tape....
s from multitrack audio tape onto consumer-level HiFi VCRs. However, because the VHS HiFi recording-process is intertwined with the VCR's video-recording function, advanced editing functions such as audio-only or video-only dubbing are impossible. Some VHS decks also had a "simulcast" switch, allowing users to record an external audio input along with off-air pictures. Some televised concerts offered a stereo simulcast soundtrack on FM radio and as such, events like Live Aid were recorded by thousands of people with a full stereo soundtrack despite the fact that stereo TV broadcasts were some years off.

The considerable complexity and additional hardware limited VHS HiFi to high-end decks for many years. While linear-stereo all but disappeared from home VHS decks, it was not until the 1990s that HiFi became a standard feature on VHS decks. Even then, most customers were unaware of its significance and merely enjoyed the better audio performance of the newer decks.

Tracking adjustment and index marking
Another linear control track, at the tape's lower edge, holds pulses that mark the beginning of every frame of video; these are used to fine-tune the tape speed during playback and to get the rotating heads exactly on their helical tracks rather than having them end up somewhere between two adjacent tracks (a feature called tracking). 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. The control can additionally hold index marks. These are normally written at the beginning of each recording session, and can be found using the VCR's index search function: this will fast-wind forward or backward to the nth specified index mark, and resume playback from there. There was a time when higher-end VCRs provided functions for manually removing and adding these index marks — so that, for example, they coincide with the actual start of the program — but this feature has become hard to find in recent models.

Comparison to other video formats
Below is a list of modern-day, digital-style measurements (and traditional analog TV lines per picture height) for various media. The list only includes popular formats, not rare formats, and all values are approximate since the actual quality can vary machine-to-machine or tape-to-tape. For ease-of-comparison all values are for the NTSC system, and listed in ascending order from lowest quality to highest quality. (For PAL systems, replace "480" with "576".)

  • 350×240 (250 lines): Video CD
  • 330×480 (250 lines): Umatic, Betamax, VHS, Video8
  • 400×480 (300 lines): Super Betamax, Betacam (professional)
  • 440×480 (330 lines): Analog Broadcast
  • 560×480 (420 lines): LaserDisc, Super VHS, Hi8
  • 670×480 (500 lines): Enhanced Definition Betamax
  • 720×480 (520 lines): NTSC DVD, NTSC MiniDV, Digital8, Digital Betacam (professional)
  • 720×480 (400 lines): Widescreen DVD (anamorphic)
  • 1280×720 (720 lines): AVCHD, Blu-ray Disc, D-VHS, HD DVD, HDV
  • 1440×1080 (810 lines): AVCHD, HDCAM (professional), HDV, XDCAM HD (professional), PAL DVCPro HD (professional)
  • 1920×1080 (1080 lines): AVCHD, Blu-ray Disc, D-VHS, HDCAM SR (professional), HD DVD, XDCAM EX, XDCAM HD 4:2:2


Variations

Vhsc
Vhsc Carrier

Super-VHS / Digital-VHS (high-definition) / ADAT

Several improved versions of VHS exist, most notably Super-VHS (S-VHS)
S-VHS

Introduced in Japan and overseas in June 1987, S-VHS is an improved version of the VHS standard for consumer video cassette recorders....
, an analog video standard with improved video bandwidth. S-VHS improved the luminance resolution to 400 horizontal per picture height (versus 250 for VHS/Beta and 500 for DVD). The audio-system (both linear and AFM) is the same. S-VHS made little impact on the home market, but gained dominance in the camcorder market due to its superior picture quality.

The ADAT
ADAT

Alesis Digital Audio Tape or ADAT, first introduced in 1991, was used for Simultaneityly recording eight tracks of digital audio at once, onto Super VHS magnetic tape - a tape format similar to that used by consumer VCRs....
 format provides the ability to record digital audio using S-VHS media.

The other improved standard, called Digital-VHS (D-VHS)
D-VHS

D-VHS is a digital video format developed by JVC, in collaboration with Hitachi, Ltd., Matsushita, and Philips. The "D" in D-VHS originally stood for Data VHS, but with the expansion of the format from standard definition to high definition capability, JVC renamed it Digital VHS and uses that designation on its website....
, records digital high definition video onto a VHS form factor tape. D-VHS can record up to 4 hours of ATSC Digital Television in 720p or 1080i formats using the fastest record mode (equivalent to VHS-SP), and up to 40 hours of standard definition video at slower speeds.

VHS-C / Super-VHS-C

Another variant is VHS-Compact (VHS-C)
VHS-C

VHS-C is the compact VHS format introduced in 1982 and used primarily for consumer-grade compact camcorders. The format is based on the same videotape as is used in VHS, and can be played back in a standard VHS video cassette recorder with an adapter....
, originally developed for portable VCRs in 1982, but ultimately finding success in palm-sized camcorder
Camcorder

A camcorder is a portable consumer electronics device for recording video and Sound recording using a built-in recorder unit. The camcorder contains both a video camera and a video recorder in one unit, hence its compound name....
s. Since VHS-C tapes are based on the same magnetic tape as full size tapes, they can be played back in standard VHS players using a mechanical adapter, without the need of any kind of signal conversion. The magnetic tape on VHS-C cassettes is wound on one main spool and uses a gear wheel to advance the tape; the longest tape available holds 40 minutes in SP mode and 120 minutes in EP mode.

Sony Betamax was unable to shrink that form any further, so instead they developed Video8/Hi8 which was in direct competition with the VHS-C/S-VHS-C format throughout the 80s, 90s, and 2000s. Ultimately neither format "won" and both continue to be sold in the low-end market (examples: JVC SXM38 and Sony TRV138). Super VHS-C camera recordings can be played back in standard VHS VCRs with SVHS-ET technology.

Use as PC backup devices

Devices have also been invented which directly connect a personal computer
Personal computer

A personal computer is any general-purpose computer whose original sales price, size, and capabilities make it useful for individuals, and which is intended to be operated directly by an end user, with no intervening computer operator....
 to VHS tape recorders for use as a data backup device. Most notable of these devices was ArVid
ArVid

ArVid is a data backup solution using a VHS tape as a storage medium. It was very popular in Russia and former USSR in mid-1990s.It was produced in Zelenograd, Russia by PO KSI....
, widely used in Russia
Russia

Russia , or the Russian Federation , is a list of countries spanning more than one continent country extending over much of northern Eurasia....
 and CIS
Commonwealth of Independent States

The Commonwealth of Independent States is a regional organization whose participating countries are former Soviet Republics.The CIS is comparable to a confederation similar to the original European Community....
 states. Also available in the United States
United States

The United States of America is a Federal government constitutional republic comprising U.S. state and a federal district. The country is situated mostly in central North America, where its Contiguous United States and Washington, D.C., the Capital districts and territories, lie between the Pacific Ocean and Atlantic Oceans, Borders of the U...
 were similar systems manufactured by Corvus
Corvus (company)

Corvus Systems was a technology company founded by Michael D'Addio and Mark Hahn in 1979 and located in San Jose, California, Silicon Valley in the U.S.....
, Videotrax, and Alpha Microsystems
Alpha Microsystems

Alpha Microsystems is a computer company founded in 1977 by John French, Dick Wilcox and Bob Hitchcock. The first Alpha Micro computer was the S-100 bus AM-100, based upon the WD16 microprocessor chipset from Western Digital....
. Also available was Backer from Danmere Ltd. of England. Also HP develops a backup system that uses VHS tapes and stores 5 GB in every tape.

W-VHS

W-VHS
W-VHS

W-VHS is a High-definition television analog signal video tape format created by JVC. The format was originally introduced in 1994 for use with Japan's Hi-Vision Multiple sub-nyquist sampling Encoding system broadcasts and is no longer supported; the tapes are no longer manufactured and no players are currently produced for this format....
 caters for analog high definition video. Discontinued and replaced by D-VHS
D-VHS

D-VHS is a digital video format developed by JVC, in collaboration with Hitachi, Ltd., Matsushita, and Philips. The "D" in D-VHS originally stood for Data VHS, but with the expansion of the format from standard definition to high definition capability, JVC renamed it Digital VHS and uses that designation on its website....
.

D9

There is also a JVC-designed component digital professional production format known as Digital-S, or officially under the name D9, that uses a VHS form factor tape and essentially the same mechanical tape handling techniques as an S-VHS recorder. This format is the least expensive format to support a pre-read edit. This format is most notably used by Fox
Fox Broadcasting Company

The Fox Broadcasting Company, commonly referred to as Fox and stylized as FOX, is an United States television network owned by Fox Entertainment Group, part of Rupert Murdoch's News Corporation....
 for some of its cable networks.

Signal standards

VHS can record and play back all varieties of analog television signals
Broadcast television system

There are several broadcast television systems in use in the world today. An analog television system includes several components: a set of technical parameters for the broadcast signal, a system for encoder color, and possibly a system for encoding multi-channel audio....
 in existence at the time VHS was devised. However, a machine must be designed to record a given standard. Typically, a VHS machine can only handle signals of the country it was sold in. The following signal varieties exist in conventional VHS:

  • SECAM
    SECAM

    SECAM, also written S?CAM , is an analog television system first used in France.A team led by Henri de France working at Compagnie Fran?aise de T?l?vision invented SECAM....
    /625/25 (SECAM, French variety)
  • MESECAM
    SECAM

    SECAM, also written S?CAM , is an analog television system first used in France.A team led by Henri de France working at Compagnie Fran?aise de T?l?vision invented SECAM....
    /625/25 (most other SECAM countries, notably the former Soviet Union and Middle East)
  • NTSC
    NTSC

    NTSC is the analog television system used in most of the Americas, Japan, South Korea, Taiwan, the Philippines, Burma, and some Pacific island nations and territories ....
    /525/30 (Most parts of North and South America, Japan, South Korea)
  • PAL
    PAL

    PAL, short for Phase Alternating Line, is a color-encoding system used in broadcast television systems in large parts of the world. Other common analog television systems are SECAM and NTSC....
    /525/30 (i.e., PAL-M, Brazil)
  • PAL
    PAL

    PAL, short for Phase Alternating Line, is a color-encoding system used in broadcast television systems in large parts of the world. Other common analog television systems are SECAM and NTSC....
    /576/25 (most of Western Europe, Australia, many parts of Asia such as China and India, some parts of South America such as Argentina and Uruguay, and Africa)


Since the 1990s, dual- and multi-standard VHS machines have become more and more common. These can handle VHS tapes of more than one standard. For example, regular VHS machines sold in Australia and Europe nowadays can typically handle PAL, MESECAM for record and playback, plus NTSC for playback only. Dedicated multistandard machines can usually handle all standards listed, some high end model can even convert a tape from one standard to another by using a built-in standards converter.

S-VHS only exists in PAL/625/25 and NTSC/525/30. S-VHS machines sold in SECAM markets record internally in PAL, and convert to/from SECAM during record/playback, respectively. Likewise, S-VHS machines for the Brazilian market record in NTSC and convert to/from PAL-M.

A small number of VHS decks are able to decode closed captions
Closed captioning

Closed captioning is a term describing several systems developed to display Written language on a television or video Display device to provide additional or interpretive information to viewers who wish to access it....
 on pre-recorded video cassettes. A smaller number still are able, additionally, to record subtitles transmitted with world standard teletext
Teletext

Teletext is a television information retrieval service developed in the United Kingdom in the early 1970s. It offers a range of text-based information, typically including national, international and sporting news, weather and TV schedules....
 signals (on pre-digital services), simultaneously with the associated program.

Tape lengths

Both NTSC and PAL/SECAM VHS cassettes are physically identical (although the signals recorded on the tape are incompatible). However, as tape speeds differ between NTSC and PAL/SECAM, the playing time for any given cassette will vary accordingly between the systems.

In order to avoid confusion, manufacturers indicate the playing time in minutes that can be expected for the market the tape is sold in. It is perfectly possible to record and play back a blank T-XXX tape in a PAL machine or a blank E-XXX tape in an NTSC machine, but the resulting playing time will be different from that indicated. SP is Standard Play and LP is Long Play at 1/2 speed for both NTSC and PAL regions. EP/SLP designates Extended Play/Super Long Play at 1/3rd speed for NTSC regions. (PAL does not have an EP speed.)

  • E-XXX indicates playing time in minutes for PAL or SECAM in SP speed.
  • T-XXX indicates playing time in minutes for NTSC or PAL-M in SP speed.


Common Tape Lengths in minutes (hours)
Tape Label Tape Length Rec. Time (NTSC) Rec. Time (PAL)
ft m SP LP EP/SLP SP LP
T-120 812 247.5 120 min (2 h) 240 min (4h) 360 min (6h) 169 min (2:49 h) 338 min (5:38 h)
T-180 1210 368.8 180 min (3 h) 360 min (6 h) 540 min (9 h) 253 min (4:13 h) 507 min (8:27 h)
T-210 (rare) 1421 433.1 210 min (3:30 h) 420 min (7 h) 630 min (10:30 h) 294 min (4:56 h) 592 min (9:52 h)
DF480 (T-240 equiv) 1624 495.0 240 min (4 h) 480 min (8 h) 720 min (12 h) 340 min (5:40 h) 680 min (11:20 h)
E-120 570 173.7 83 min (1:26 h) 172 min (2:52 h) 258 min (4:18 h) 120 min (2 h) 240 min (4 h)
E-180 851 259.4 129 min (2:09 h) 258 min (4:18 h) 387 min (6:27 h) 180 min (3 h) 360 min (6 h)
E-240 1142 348.1 173 min (2:53 h) 346 min (5:46 h) 519 min (8:39 h) 240 min (4 h) 480 min (8 h)


VHS vs. Betamax

Betavhs2
VHS was the winner of a protracted and somewhat bitter format war during the late 1970s and early 1980s against Sony's Betamax
Betamax

Betamax is an obsolete home videocassette tape recording format developed by Sony, and released on May 10, 1975. The cassettes contained 1/2 inch wide videotape in a design similar to the earlier, professional 3/4 inch U-matic videocassette format....
 format.

Betamax was widely perceived at the time as the better format, as it offered a slightly higher horizontal resolution (250 lines vs. 240 lines in PAL & NTSC), lower video noise, and less luma-chroma crosstalk
Crosstalk (electronics)

In electronics, the term crosstalk refers to any phenomenon by which a Signalling transmitted on one circuit or channel of a transmission system creates an undesired effect in another circuit or channel....
 than VHS, and was marketed as providing pictures superior to VHS's, however the introduction of B-II speed (2-hour mode) to compete with VHS's 2-hour Standard Play mode, reduced Betamax's horizontal resolution to 240 lines. The extension of VHS to VHS HQ produced 250 lines, so that overall a Betamax/VHS user could expect virtually identical luminance and chrominance resolution (~30 lines across), wherein the actual picture performance depended on other factors, including the condition and quality of the videotape, and the specific video recorder machine model.

Betamax held an early lead in the format war — but by 1981, U.S. Betamax sales had sunk to only 25% of all sales. VHS was gaining market share due to its longer tape time (in 1981, 9 hours maximum, compared to just 4 hours for Betamax in USA) and JVC's less strict licensing program. The longer tape time is sometimes cited as the defining factor in the format war, allowing consumers to record entire programs unattended (recording time between VHS and Betamax were similar in areas where VHS entered the market several years after introduction, such as the UK in 1978). Sony ultimately conceded the fight in 1988, bringing out a line of VHS VCRs of its own.

The format war and the "marketing over technology" claims have taken on a life of their own, and continue to be used as analogies in battles within the computer industry, including Apple vs. IBM
IBM

International Business Machines Corporation, abbreviated IBM and nicknamed "Big Blue" , is a multinational corporation computer technology and consulting corporation headquartered in Armonk, New York, New York, United States....
, Macintosh
Macintosh

File:Imac alu.pngMacintosh, commonly shortened to Mac, is a brand name which covers several lines of personal computers designed, developed, and marketed by Apple Inc....
 vs. PC
Personal computer

A personal computer is any general-purpose computer whose original sales price, size, and capabilities make it useful for individuals, and which is intended to be operated directly by an end user, with no intervening computer operator....
, and HD DVD
HD DVD

HD DVD is a discontinued high-density optical media optical disc format for storing data and high-definition video.HD DVD was supported principally by Toshiba, and was envisaged to be the successor to the standard DVD format....
 vs. Blu-ray Disc
Blu-ray Disc

Blu-ray Disc is an optical disc data storage device medium. Its main uses are high-definition video and data storage. The disc has the same physical dimensions as standard DVDs and CDs....
. Other formats such as 8 mm
8 mm video format

The 8 mm video format refers informally to three related videocassette formats for the NTSC and PAL/SECAM television systems. These are the original Video8 format and its improved successor Hi8 , as well as a more recent digital format known as Digital8....
 video cassettes and MiniDV have emerged since the post-battle era, although these formats did little to erase VHS dominance in the home.

Both VHS and Betamax manufacturers created professional video formats built around the same cassette shells. The professional derivatives of VHS were M
M (videocassette format)

M is the name of a professional videocassette format developed around 1982 by Matsushita and RCA. It was developed as a competitor to Sony's Betacam format....
 and then MII
MII (videocassette format)

MII is a professional videocassette format developed by Panasonic in 1986 as their answer and competitive product to Sony's Betacam SP format....
 whereas the professional derivative of Betamax was Betacam
Betacam

Betacam is a family of half-inch professional videotape products developed by Sony from 1982 onwards. In colloquial use, "Betacam" singly is often used to refer to a Betacam camcorder, a Betacam tape, a Betacam video recorder or the format itself....
 which has gone on to spawn digital variants. In a complete reversal of the domestic VHS-Betamax battle, in the professional arena the Beta format has been hugely successful, and the VHS derived formats became obsolete. Occasionally this causes some confusion, in that people believe that Betacam is a professional studio version of Betamax. In reality Betacam is only superficially similar. Although the tapes used may look the same, and the first generation Betacam tapes could be used for recording in Betamax machines, in Betacam they are run at a much higher linear speed, and the recording system is completely different. The same applied to the VHS based-professional formats.

Slow Decline of VHS

The VHS VCR was a mainstay in the TV-equipped living room for more than a decade, but was replaced by newer technologies. For time-shifting (off the air or cable/satellite taping), hard-drive based DVRs have replaced the VCR as the time-shifting device of choice, especially in households with subscriber-based TV-services. The home camcorder market, one which VHS shared with alternative formats, has already transitioned to digital-video recording. But the largest blow to VHS was the March 1997 introduction of the DVD format to American consumers. For home-video (that is, pre-recorded commercially-released movies, etc.) rental and sales, DVD
DVD

DVD, also known as "Digital Versatile Disc" or "Digital Video Disc,"is a popular optical disc data storage device media format. Its main uses are video and data storage....
 has completely taken the place of VHS.

At most electronics retailers, choice among VHS equipment is increasingly shrinking. Sales are focused on DVD-recorders and subscriber-based DVRs (such as TiVo
TiVo

TiVo is the pioneer of the digital video recorder . TiVo was introduced in the United States, and is now available in Canada, Mexico, Australia, and Taiwan....
). Most electronics chains have stopped stocking VHS home-video releases, focusing only on DVD and Blu-Ray Disc technology. Major Hollywood studios no longer issue releases on VHS.

The last standalone JVC VHS unit was produced in 2008. The final major Hollywood motion picture released on VHS was David Cronenberg's
David Cronenberg

David Paul Cronenberg, Order of Canada, Royal Society of Canada is a Canada film director, screenwriter, and occasional actor. He is one of the principal originators of what is commonly known as the body horror or venereal horror genre....
 A History of Violence
A History of Violence (film)

A History of Violence is an Academy Award-nominated 2005 in film Cinema of the United States/Cinema of Germany crime film-thriller film directed by David Cronenberg, and written by Josh Olson, based on the graphic novel A History of Violence by John Wagner and Vince Locke....
.

Although VHS has quickly faded from mainstream home-video, the VCR is still used in many US households. The Washington Post noted that as of 2005, 94.5 million Americans still owned VHS format VCRs. Usable VHS equipment can still be purchased secondhand from auction-sites and used equipment dealers. Likewise, home-video VHS tapes can still be found in many second-hand shops, and are sometimes very cheap due to the lack of demand.

In December 2008, the final truckload in the USA of home-video VHS tapes rolled out of a warehouse owned by Ryan Kugler, the last major supplier of those tapes. Kugler is President and co-owner Distribution Video Audio, a seller of distressed goods such as VHS tapes. According to Kugler, "It's dead, this is it, this is the last Christmas, without a doubt. I was the last one buying VHS and the last one selling it, and I'm done. Anything left in warehouse we'll just give away or throw away."

Optical disc-based technologies

The DVD-Video
DVD-Video

DVD-Video is a consumer video format used to store digital video on DVD discs, and is currently the dominant consumer video format in Canada, Europe and Australia....
 format was introduced first, in 1996, in Japan, to the United States in March 1997 (Test Marketed) and mid-late 1998 in Europe and Australia.

Despite DVD's better quality (up to 576 lines versus 250 lines horizontal resolution), VHS is still widely used in home recording of television programs, due to the large installed base and the lower cost of VHS recorders and tape. The commercial success of DVD recording and re-writing has been hindered by a number of factors including:
  • A reputation for being temperamental and occasionally unreliable, as well as the risk caused by scratches and hairline cracks.
  • Incompatibilities in playing discs recorded on a different manufacturer's machine to that of the original recording machine.
  • Shorter recording time: Up to 6 hours on a single-layer disc (with high compression) versus 10.5 (NTSC) or 10 (PAL/SECAM) hours on a T-210 VHS-EP tape (although newer machines can now record to 10 hours or more on a disc).


High-capacity digital recording technologies

High-capacity digital recording systems are also gaining in popularity with home users. These types of systems come in several form factors:
  • Hard disk-based
    Hard disk

    A hard disk drive , commonly referred to as a hard drive, hard disk, or fixed disk drive, is a non-volatile storage device which stores digitally encoded data on rapidly rotating hard disk platters with magnetic surfaces....
     set-top box
    Set-top box

    A set-top box or set-top unit is a information appliance that connects to a television and an external source of signal , turning the signal into content which is then displayed on the television screen....
    es
  • Hard disk/optical disc
    Optical disc

    In computing, sound reproduction, and video, an optical disc is a flat, circular disc wherein Data is stored in the pits in its flat surface ? sequentially on the continuous, spiral track extending from the innermost track to the outermost track, covering the entire disc surface....
     combination set-top boxes
  • Personal computer-based
    Personal computer

    A personal computer is any general-purpose computer whose original sales price, size, and capabilities make it useful for individuals, and which is intended to be operated directly by an end user, with no intervening computer operator....
     media center
    Media center

    The term media center refers either to a dedicated computer appliance or to a specialized personal computer software, both of which are adapted for playing various kinds of Electronic media ....
Hard disk-based systems include TiVo
TiVo

TiVo is the pioneer of the digital video recorder . TiVo was introduced in the United States, and is now available in Canada, Mexico, Australia, and Taiwan....
 as well as other digital video recorder (DVR)
Digital video recorder

A digital video recorder or personal video recorder is a device that records video in a digital format to a disk drive or other memory medium within a device....
 offerings. These types of systems provide users with a no-maintenance solution for capturing video content. Customers of subscriber-based TV generally receive electronic program guides, enabling one-touch setup of a recording schedule. Hard disk-based systems allow for many hours of recording without user-maintenance. For example, a 120 GB
Gigabyte

Gigabyte is an SI prefix-multiple of the unit byte for Computer data storage. Since the giga- prefix means 109, gigabyte means 1,000,000,000 bytes ....
 system recording at an extended recording rate (XP) of 9,800 kbit/s MPEG-2
MPEG-2

MPEG-2 is a standard for "the generic coding of moving pictures and associated audio information". It describes a combination of Lossy compression video compression and lossy audio data compression methods which permit storage and transmission of movies using currently available storage media and transmission bandwidth....
 can record over 25 hours of video content. VHS and other removable-storage require physical management of the media, if the viewer's recording-schedule exceeds the media's capacity, as it often does. Just like VHS, DVD-recorders technologies still rely on tangibles
Tangibility

In law, tangibility is the attribute of being detectable with the senses.In criminal law, one of the elements of an offense of larceny is that the stolen property must be tangible....
, such as blank discs.

PC-based media centers serve a niche but growing market in the homes of tech-savvy users. A media center can not only handle the timeshifting duties of a DVR set-top box, and a DVD/Blu-ray Disc player, but also as a home library. A media center is attractive to technical-savvy consumers who are looking for special functionality not found in a pre-boxed DVR.

VHS in popular culture

  • Toei
    Toei Company

    is a Cinema of Japan and television Production company and Film distributor corporation. Based in Tokyo, Toei owns and operates thirty-four Movie theater across Japan, a modest vertically-integrated studio system by the standards of the 1930s United States; operates Movie studio at Tokyo and Kyoto; and is a Shareholder in several television compa...
     produced a motion picture called Hi wa Mata Noboru (2002), starring Toshiyuki Nishida
    Toshiyuki Nishida

    is a Japanese people actor. He has received ten Japanese Academy Awards nominations, winning twice, for Dun-Huang in 1988 in film and Gakko in 1993 in film ....
    . Toshiyuki plays the role of Shizuo Kagaya, the head of the video department at Victor
    JVC

    , usually referred to as JVC, is an international consumer and professional electronics corporation based in Yokohama, Japan which was founded in 1927....
    . In the process of developing a home VCR, he basically invents VHS. Although the movie is based on a true story, it was produced purely for entertainment and not as a documentary, which explains some of the over-dramatizations of its characters and events. Several important events are covered, such as the unification of VCR standards by Japan's Ministry of Trade
    Ministry of International Trade and Industry

    The Ministry of International Trade and Industry was one of the most powerful agencies in the Japanese government. At the height of its influence, it effectively ran much of Japanese industrial policy, funding research and directing investment....
    , who favored Sony
    Sony

    is a multinational corporation list of conglomerates corporation headquartered in Minato, Tokyo, Japan, and one of the world's largest media conglomerates with revenue exceeding US$99.1 billion ....
    's Betamax
    Betamax

    Betamax is an obsolete home videocassette tape recording format developed by Sony, and released on May 10, 1975. The cassettes contained 1/2 inch wide videotape in a design similar to the earlier, professional 3/4 inch U-matic videocassette format....
     format, and the importance in Victor bringing Matsushita
    Matsushita Electric Industrial Co.

    , formerly known as Matsushita Electric Industrial Co., Ltd., is a multinational corporation based in Kadoma, Osaka. Its main business is in electronics manufacturing and produces products under a variety of names including Panasonic and Technics ....
     on-board as a partner to build VHS units.
  • In the 1987 film Spaceballs
    Spaceballs

    Spaceballs is a 1987 science fiction parody film co-written, directed by, and starring Mel Brooks. It was released on June 24, 1987, and earned only modest returns, but has gone on to become a seminal cult film on video....
    , a library of VHS tapes is browsed for a copy of the film, which is in a process called "instant cassettes" ("They're in stores before the movie is finished!") by Lord Dark Helmet to discover the location of the heroes. They then fast forward through earlier parts of the tape (which include the traditional FBI warning displayed at the very beginning of the tape), then upon witnessing themselves at that exact moment in time, go into a ridiculous and redundant question-and-answer session on "Now" before fast forwarding to finding the heroes' location.
  • The finishing track of Radiohead
    Radiohead

    Radiohead are an English alternative rock band from Abingdon, Oxfordshire, Oxfordshire. The band is composed of Thom Yorke , Jonny Greenwood , Ed O'Brien , Colin Greenwood and Phil Selway ....
    's 2007 album "In Rainbows
    In Rainbows

    In Rainbows is the seventh album by the English alternative rock band Radiohead. It was first released on 10 October 2007 as a digital download, followed by a standard CD release in most countries during the last week of 2007....
    ", Videotape, concerns its usage in recording memories.
  • The 2008 film Be Kind Rewind
    Be Kind Rewind

    Be Kind Rewind is a 2008 in film Cinema of the United States comedy film from New Line Cinema, directed by Michel Gondry and starring Jack Black, Mos Def, Danny Glover and Mia Farrow....
     concerns a video rental store employee (Mos Def
    Mos Def

    Dante Terrell Smith , is an American MC and actor known by the stage name Mos Def. Mos Def started his hip hop music career in a group called Urban Thermo Dynamics, after which he appeared on albums by Da Bush Babees and De La Soul....
    ) who finds that his friend (Jack Black
    Jack Black

    Jack Black , is an American actor and musician, notably of Tenacious D.Jack Black may also refer to:* Jack Black , late 19th - early 20th Century author and hobo...
    ) has accidentally wiped all the video cassettes in the store (which is losing business due to its obsolete format), and they resort to acting out the films in front of a video camera to avoid disappointing customers. The film features many references to the format, and even includes a VHS tape on one of the posters.
  • The plot of the 2002 film The Ring
    The Ring (2002 film)

    The Ring is a 2002 in film United States remake of the 1998 Japanese J-horror Ring . Both films are based on the novel Ring by K?ji Suzuki....
    , (Ringu in Japan
    Japan

    Japan is an island country in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, People's Republic of China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south....
    ), revolved around a homemade VHS tape that, when watched, would kill anyone seven days later.
  • In the 1983 film Videodrome
    Videodrome

    Videodrome is a science fiction film Horror film Canadian film directed by David Cronenberg....
    , the main character Max Renn suffers a body mutation where his chest turns into an entrance to VHS tapes, which control him to do tasks such as kill people.


External links

  • by Marc Wielage & Rod Woodcock
  • covering the history of VHS and other vintage formats
  • Tracking the death of the VHS format