The macroblock is a processing unit in image and video compression formats based on linear block transforms, typically the discrete cosine transform (DCT)...
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Video compression picture types (section Macroblocks)
macroblocks P-frames can contain both intra macroblocks and predicted macroblocks B-frames can contain intra, predicted, and bi-predicted macroblocks...
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including: Macroblock-adaptive frame-field (MBAFF) coding, using a macroblock pair structure for pictures coded as frames, allowing 16×16 macroblocks in field...
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MPEG-1 (section Macroblocks)
was the motion-compensated DCT hybrid video coding structure. It uses macroblocks of size 16×16 with block-based motion estimation in the encoder and motion...
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Flexible Macroblock Ordering or FMO is one of several error resilience tools defined in the Baseline profile of the H.264/MPEG-4 AVC video compression...
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H.262/MPEG-2 Part 2 (section Macroblocks)
DVD for each macroblock being compressed. Sometimes no suitable match is found. Then, the macroblock is treated like an I-frame macroblock. MPEG-2 video...
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A Block Matching Algorithm is a way of locating matching macroblocks in a sequence of digital video frames for the purposes of motion estimation. The...
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blocks are grouped into macroblocks of 16 × 16 samples, and the 16 DC coefficients from the 4 × 4 blocks of each macroblock are passed through another...
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Each motion vector is used to represent a macroblock in a picture based on the position of this macroblock (or a similar one) in another picture, called...
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prediction block boundaries, or both, and may coincide with macroblock boundaries. The term macroblocking is commonly used regardless of the artifact's cause...
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prediction performance by smoothing the sharp edges which can form between macroblocks when block coding techniques are used. The filter aims to improve the...
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com/uploads/files/RPE-MACROBLOCK-2.7L-V8-TECHNICAL-DATA.pdf [bare URL PDF] http://www.radicalperformanceengines.com/engines/Powertec-Macroblock-v8 [dead link]...
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Inter frame (section Enhanced Direct/Skip Macroblock)
compression rates. An inter coded frame is divided into blocks known as macroblocks. After that, instead of directly encoding the raw pixel values for each...
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device mode is to read three RLE-encoded 16×16 macroblocks, run IDCT and assemble a single 16×16 RGB macroblock. Output data may be transferred directly to...
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transmission over an unreliable network or file corruption. Since the runs of macroblocks between restart markers may be independently decoded, these runs may...
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restructuring the ordering of the representation of the fundamental regions (macroblocks) in pictures. This type of algorithm avoids the need to wait for a full...
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vector Two dimensional vector offset from current position to reference frame Picture A field or frame Skipped macroblock No data is encoded for macroblock...
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the design is called a macroblock, and H.261 was the first standard in which the macroblock concept appeared. Each macroblock consists of a 16×16 array...
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choose among more than one previously decoded frame on which to base each macroblock in the next frame. While the best frame for this purpose is usually the...
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Coding (HEVC) video standard and conceptually corresponds in structure to macroblock units that were used in several previous video standards. CTU is also...
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transform Yes Yes Yes Overlapped transform Yes Yes Yes 4 motion vector per macroblock Yes Yes Yes 1⁄4 pixel luminance motion compensation Yes Yes Yes 1⁄4 pixel...
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unit registers: 128-bit wide, 32 entries Image processing unit: MPEG2 macroblock layer decoder Direct memory access: 10 channels VDD Voltage: 1.8 V Power...
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control. Visual quality algorithms include CU-Tree (the successor to x264's macroblock-tree), adaptive quantization, b-pyramid, weighted prediction and psycho-visual...
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D1 NTSC (720×480) D1 PAL (720×576) 6 3,968 12,000 0.33 3,600 108,000 720p (1280x720) Units kbits kbits/s seconds bits macroblocks macroblocks/s pixels...
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multiple of 16, which is a common macroblock size for video codecs. Video frames encoded with 16 × 16 pixel macroblocks would be padded to 640 × 368 and...
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Parameters Description Macroblock type Prediction method for each coded macroblock Coded block pattern Indicates which blocks within a macroblock contain coded...
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in H.261, using 16 × 16 macroblocks and 8 × 8 transform blocks. So a CIF-size image (352 × 288) contains 22 × 18 macroblocks and a QCIF image (176 × 144)...
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artifacts: MPEG-2 video compression can result in visible artifacts such as macroblocking, mosquito noise and ringing which become accentuated in extended recording...
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optimization (SSD) and sum of absolute transformed differences (SATD). Macroblock-tree rate control, which controls the quality by tracking how often parts...
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and H.265/HEVC video coding standards. He is co-inventor of flexible macroblock ordering (FMO) and tiles, essential features in H.264/MPEG-4 AVC and H...
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