Video Preservation Web Site

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2" Quadruplex or Quad, Ampex Corporation (1956)

Critically endangered

TCR-100 "Quad" Video Cartridge, RCA (1969)

Critically endangered

1" UV-340 or EV-210, Sony (1964)

Extinct

1" SMPTE Type A, Ampex Corporation (1965);
1" 7100 (Precision Instruments);
1" IVC 800/900;
1" Helical; 
1" SMPTE Type B (introduced by Bosch, 1975);
1" SMPTE Type C (1978).

Critically endangered or Endangered

EVR Electronic Video Recording, CBS (1967)

Extinct

Panasonic Video Cartridge

Extinct

EIAJ Type 1, Sony Broadcasting and others (1969)

Endangered