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The digital video standard for DTV/HDTV.
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Compression performance for high-end video
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Combines co-efficient transform+predictive coding+
motion
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estimation.
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Extremely computation intensive:
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Current state-of-the art in video compression
technology requires
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custom chipset to obtain real-time performance in
MPEG-2 encoding.
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Roughly speaking, something close to CIF video (CCIR
4:2:0
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CIF=352x240 at 30 frames/second or 352 x288 at 25
frames/second) can
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be decoded in software satisfactorily. It requires
processing of 69,300
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blocks per second.
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In comparison, a broadcast quality video (CIR-601
4:2:2: 720x480 at 30
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frames/second or 352x576 at 25 frames/second)
requires processing of
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405,000 blocks per second.
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a production or medical quality video (MPEG-2 HIGH@HIGH-1440
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profile=1920x1152x 60 frames/second) will require
processing of
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5,184,000 blocks per second.
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A full logic xcoder is encoder+decoder!
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