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8 mm video format
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The 8mm video format refers informally to three related videocassette formats. These are the original Video8 format and its improved successor Hi8, as well as a more recent digital recording format known as Digital8. Wikipedia
Dimensions: 9.5 × 6.2 × 1.5 cm; (311⁄16 × 23⁄8 × 19⁄32 inch)
Encoding: NTSC, PAL, SECAM
Read mechanism: Helical scan
Released: 1984
Usage: Home movies