A CDE Definition
An analog videotape format from Sony that uses 8mm cassettes with metal evaporated (ME) or metal particle (MP) tape. Introduced in the early 1990s with 400 lines of resolution, Hi8 is an improvement over the original 270-line Video8 format (see below), as well as VHS tape. Hi8 also supports a digital audio track. The format was superseded by Digital8.
Handycam and Video8
In the mid-1980s, Sony introduced its first Handycam Video8 camcorder with 8mm tape cassettes to provide consumers with an alternative to bulkier VHS and Betamax models. Video8/Hi8 and VHS-C (compact VHS) camcorders competed with each other until MiniDV and Digital8 units came out. See Digital8.
A digital videotape format from Sony that was introduced in 1999. Digital8 uses the DV/MiniDV encoding technology but not the MiniDV cassettes. The cassettes it does use are the same as the earlier Hi8 analog tapes; however, they run at twice the speed for NTSC recording or 1.5 times for PAL. An LP mode is available so that, for example, a 90-minute Hi8 cassette records 90 minutes.
Using DV encoding with 480 lines of resolution, Digital8 provides more lines than its analog predecessors (270 for Video8; 400 for Hi8). See Hi8, DV and SD formats.
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