3/4" U-matic
AKA
        
    (None)
    Era
        
    1971–1990s
    Format
        
    digital
    Developed by
        
    Sony
    (Max) Capacity
        
    Small: 20 minutes
Standard: 60 minutes
    Size
        
    Small (S): 18.4 × 12.2 × 3.2 cm
Standard (SP): 22.1 × 14.0 × 3.2 cm
    Fun facts
    - The 44.1 kHz sampling standard used in Compact Discs was defined by the bandwidth available on this format's tapes
- While this format was primarily used to store analog video, it was also used for the storage of digital audio data
- All tapes have a round red button on the back that can be removed to prevent accidental recording