Description
SMPTE standard for the Digital-S one-half inch video
format developed by JVC.
Explanation
D9 or Digital-S uses a cassette with the same basic shape
and exterior dimesions as S-VHS. Some Digital-S machines
will play S-VHS tapes.
The one-half inch metal particle tape has a coercivity of
around 1830 Oe, and runs at 57.8 mm/sec giving 104
minutes
recording time with a tape thickness of 14.4 µm.
Video is sampled at 4:2:2 resolution and encoded at a
3.3:1 ratio with DCT-based intraframe bit-rate reduction
at
50Mb/s.
Four channels of 16-bit PCM audio at 48kHz are provided.
An interface called DIF Stream has been developed for
transfer of compressed or bit-rate-reduced data without
decoding to baseband, and re-encoding.
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