DVCPRO
A digital component video format introduced by Panasonic™ and Philips BTS™. The format uses two cassette sizes- 6.35mm and 0.5 inch. It provides a stream of digital information @ 25 Mbits/sec and has two uncompressed audio channels. It operated initially at 4:1:1 encoding and 5:1 DCT compression, but was recently re-introduced at 4:2:2 encoding and a lower, 3:3:1 rate of compression. This has changed the amount of time that can be recorded on tape from 123 minutes for the desktop DVCPRO VCR operating at 4:1:1 to 61.5 minutes at 4:2:2.
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