Cassette shell and case for each Betacam SX cassette is colored differently depending on the format, allowing for easy visual identification.
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Cassette shell and case for each Betacam SX cassette is colored differently depending on the format, allowing for easy visual identification.
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Betamax records relatively low resolution video using a heterodyne color recording system and only two recording heads, while Betacam SX uses four heads to record in component format, at a much higher linear tape speed of 10.
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Betacam SX was initially introduced as a camera line along with a video cassette player.
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At its introduction, many insisted that Betacam SX remained inferior to the bulkier one-inch Type C and B recording, the standard broadcast production format of the late 1970s to mid-1980s.
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In 1986, Betacam SX SP was developed, which increased horizontal resolution to 340 lines.
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Betacam SX SP became the industry standard for most TV stations and high-end production houses until the late 1990s.
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Betacam SX is a digital version of Betacam SP introduced in 1996, positioned as a cheaper alternative to Digital Betacam.
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Betacam SX system was very successful with newsgathering operations, which had a legacy of Betacam and Betacam SP tapes.
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Betacam SX uses MPEG-2 4:2:2P@ML compression, in comparison with other similar systems that use 4:1:1 or 4:2:0 coding.
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Together with Betacam SX, Sony introduced a generation of hybrid recorder, allowing use of both tape and disk recording on the same deck, and high speed dubbing from one to another.
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HDCAM, introduced in 1997, was the first HD format available in Betacam SX form-factor, using an 8-bit DCT compressed 3:1:1 recording, in 1080i-compatible downsampled resolution of 1440×1080, and adding 24p and 23.
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