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HDCAM
(redirected from HDCAM SR)

   Also found in: Wikipedia 0.01 sec.
HDCAM
Sony's high-definition digital videotape format. It was introduced in 1997 using 8-bit DCT compression and 3:1:1 sampling (see 3:1:1). HDCAM SR (HDCAM Superior Resolution) came out in 2003 supporting 10 bits, MPEG-4 and 4:4:4 sampling (no additional color reduction). HDCAM SR dramatically increased the bit rate from 144 Mbps to 440 Mbps, and HDCAM VTRs with a 2x mode can record two data streams simultaneously. HDCAM VTRs also typically play back Digital Betacam cassettes. See Betacam and chroma subsampling.


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Highlights of the new system include: --Dual-link HD-SDI connectivity - offering new integrated I/O hardware that provides the necessary bandwidth for capturing and editing 4:4:4 HD-RGB formats, such as HDCAM SR.
16-channel embedded digital audio allows for full support of all audio channels on HD tape formats, such as HDCAM SR.
Technically speaking, the broadcast will be simulcast in parallel to the regular SD signal, the film being played out in HDCAM SR (1080i/50 Hz) and delivered to an MPEG-2 HD encoder with a data rate of some 1.
 
 
 
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