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Digital8 machines run tape at 29 mm per second, faster than baseline DV (19 mm/s) and comparable to professional DV formats like DVCAM (28 mm/s) and DVCPRO (34 mm/s). A 120-minute 8-mm cassette holds 106 m of tape and can store 60 minutes of digital video. A standard DVCPRO cassette holds 137 m of tape, good for 66 minutes of video.
The drum rotates at high speed (one or two rotations per picture frame—about 1800 or 3600 rpm for NTSC, and 1500 or 3000 rpm for PAL) while the tape is pulled along the drum's path. Because the tape and drum are oriented at a slight angular offset, the recording tracks are laid down as parallel diagonal stripes on the tape.
The 8-track tape (formally Stereo 8; commonly called eight-track cartridge, eight-track tape, and eight-track) is a magnetic-tape sound recording technology that was popular [2] from the mid-1960s until the early 1980s, when the compact cassette, which pre-dated the 8-track system, surpassed it in popularity for pre-recorded music. [3] [4] [5]
DV (from Digital Video) is a family of codecs and tape formats used for storing digital video, launched in 1995 by a consortium of video camera manufacturers led by Sony and Panasonic. It includes the recording or cassette formats DV, MiniDV, HDV , DVCAM, DVCPro, DVCPro50, DVCProHD, Digital8 , and Digital-S .
Used later as "high speed" in some dual-speed professional compact cassette tape decks, such as the Tascam 122. 2 5.08 Used for the DC-International cassette launched by Grundig in 1965 and discontinued in 1967. [3] 1 7 ⁄ 8: 4.76 The standard speed for compact cassettes and HiPac; The lowest common reel-to-reel speed. Used for reel-to-reel ...
1 + 7 ⁄ 8 in/s is also the speed used in Compact cassettes. In some early prototype linear video tape recording systems developed in the early 1950s from companies such as Bing Crosby Enterprises, RCA, and the BBC's VERA, the tape