D-3 (video)
Television production | |
Extended to | D-5 |
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D-3 is an
D-3 uses half-inch
Camcorders were available which used this format, and are to date the only digital tape camcorders to use a lossless encoding scheme. The D-5 digital component video format, introduced in 1993 by Panasonic, uses the D-3 transport and tape running at roughly double D-3 speed. The D-3 transport in turn is derived from the MII transport. D-3/D-5 tapes come in small (161 mm × 96 mm × 25 mm), medium (212 mm × 124 mm × 25 mm), and large (296 mm × 167 mm × 25 mm) cassettes, with format-specific recognition holes. Maximum D-3 runtimes (in the Fujifilm lineup) are 50, 126, and 248 minutes.
The D-3 format is now regarded as obsolete. In the early 1990s the BBC embarked on a massive project to copy its older video tapes onto D-3 for archival, but the D-3 cassettes themselves have become obsolete and are being transferred to modern digital video standards. There is doubt[1] over whether the surviving D-3 machines will last long enough to play the 340,000 tapes which the corporation holds.[2]
References
- ^ "Histories of digital video tape". 14 July 2014. Retrieved 2017-09-19.
- ^ "BBC Academy - Technology - Digitising the BBC archive". Archived from the original on 2017-04-25. Retrieved 2016-05-14.