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Macroblock

The macroblock is a processing unit in image and video compression formats based on linear block transforms, typically the discrete cosine transform (DCT). A macroblock typically consists of 16×16 samples, and is further subdivided into transform blocks, and may be further subdivided into prediction blocks. Formats which are based on macroblocks include…

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Bitstream representation

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Map overview Semantic statistics

Macroblock

Nodes24
Edges23
Triples37
Avg. degree1.92
Density0.083333
Components1

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Macroblock

Top relations

related to Transform blocks · 13
Macroblock → AVC, AVC High, Cb, Cr, DCT, For, In, JPEG, MPEG-1 Part, MPEG-2 Part, These, This, YCbCr
related to Bitstream representation · 6
Macroblock → ADDR, Cb, Coded Block Pattern, Cr, It, QUANT
related to Prediction blocks · 6
Macroblock → AVC, Correspondingly, Distinct, In, MPEG-1 Part, MPEG-2 Part
is a · 1
Macroblock → processing unit in image and video compression formats based on linear block transforms
related to Macroblocking · 1
Macroblock → The

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Important terminology

blocks transform block samples 264 avc video prediction 261 coding size motion mpeg-1 part 262 mpeg-2 unit formats jpeg 16

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Macroblockis aprocessing unit in image and video compression formats based on linear block transforms0.90text
H.263instance ofand the grouping of chroma samples into blocks will differ accordingly.In more modern macroblock-based video coding standards0.80text
H.264/AVCinstance ofand the grouping of chroma samples into blocks will differ accordingly.In more modern macroblock-based video coding standards0.80text
transform blocks can be of sizes other than 8instance ofand the grouping of chroma samples into blocks will differ accordingly.In more modern macroblock-based video coding standards0.80text
H.261instance ofIn early standards0.80text
MPEG-1 Part 2instance ofIn early standards0.80text
and H.262/MPEG-2 Part 2instance ofIn early standards0.80text
motion compensation is performed with one motion vector per macroblockinstance ofIn early standards0.80text
H.264/AVCinstance ofIn more modern standards0.80text
a macroblock can be split into multiple variable-sized prediction blocksinstance ofIn more modern standards0.80text
called partitionsinstance ofIn more modern standards0.80text
Macroblockrelated to Bitstream representationIt0.60section

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