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33 lines
1.2 KiB
33 lines
1.2 KiB
3 years ago
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description of graphical overlays
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CB - Show Coding Block quadtree structure. Prediction modes are
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signalled at this level. CBs can be further subdivided into
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PBs for prediction and TBs for residual transforms.
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PB - Show Prediction Block structure. CB blocks may be further
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subdivided, possibly using asymetric partitionings. This is
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the level on which motion-compensation and intra-prediction is
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performed.
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TB - Show Transformation Block structure. DCT/DSTs are carried out
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on this level.
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QP - Quantization Parameter shown as greyscale value.
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Brighter blocks for larger QP values (lower quality).
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IntraPred - Show intra prediction mode.
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* Directional prediction is depicted with a line in the prediction direction
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(out of 32 possible directions)
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* Planar prediction is depicted by a square.
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* DC prediction is depicted by a circle.
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PredMode - Show prediction mode.
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* red: intra
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* blue: inter
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* green: skip = inter mode with no PB subdivision and candidate from merge list
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MV - Show motion vectors. Vectors from list L0 are drawn in red,
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motion vectors from L1 are green. Vectors are magnified by a factor of 4.
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