Macroblock meaning

A square group of pixels, typically 8x8 or 16x16, that is treated as an entity for compression and decompression. See chroma subsampling and blocking artifacts.
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(signal processing, video compression) A block of adjacent pixels, typically a rectangular 16×16 block.
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(archaeology) An area of a dig where there are multiple adjacent block excavations.
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Origin of macroblock

  • macro- +"Ž block

    From Wiktionary