Videotape
Videotape is magnetic tape used for storing video and usually sound in addition. Information stored can be in the form of either an analog signal or digital signal. Videotape is used in both video tape recorders (VTRs) or, more commonly, videocassette recorders (VCRs) and camcorders. Videotapes are also used for storing scientific or medical data, such as the data produced by an electrocardiogram.

Because video signals have a very high bandwidth, and stationary heads would require extremely high tape speeds, in most cases, a helical-scan video head rotates against 
the moving tape to record the data in two dimensions.

Tape is a linear method of storing information and thus imposes delays to access a portion of the tape that is not already against the heads. The early 2000s saw the introduction and rise to prominence of high quality random-access video recording media such as hard disks and flash memory. Since then, videotape has been increasingly relegated to archival and similar uses.
Q193663
magnetic tape
Concept
Q34508
video
Concept
Q20077126
sound
Concept
Q174948
analog signal
Concept
Q25345908
digital signal
UNK
Q732942
video tape recorder
Concept
Q380616
videocassette recorder
Concept
Q335234
camcorder
Concept
Q79785
electrocardiogram
Concept
Q249998
bandwidth
Concept
Q1454950
stationary heads
Concept
Q1759953
helical-scan
UNK
Q2035846
linear
Concept
Q4439
hard disks
Concept
Q174077
flash memory
Concept
Q747779
Videotape
Concept
Q747779
Videotape
Concept
Q747779
Videotape
Concept
2000-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
2000
DATE
subclass of
used by
used by
used by