原创 HEVC会成为下一代主流视频压缩标准吗？

Tool

MPEG-2

H.264

HEVC

Partition Size

16×16（Macroblock）

16×16（Macroblock）

8×8 to 64×64（coding Unit）

Partitioning

Inter 16×16,Intra 8×8

Sub block down to 4×4

Inter 4×8 or 8×4 uni directional,larger symmetric/asymmetric

Intra:Down to 4×4(symmetric)

Transform

Floating DCT

Integer DCT 8×8

4×4

Square IDCT from 32×32 to 4×4+DST Luma Intra 4×4

Intra prediction

DC prediction

Up to 9 predictors

35 predictors

Motion prediction

Vector from one neighbor

Spatial Median(3 blocks)

Advanced Motion Vector Prediction spatial + temporal

Motion-copy mode

/

Direct Mode

Merge Mode

Motion precision

½Pixel bi-Linear

½Pixel 6-tap

¼Pixel bi-linear

¼Pixel 7 or 8 tap Luma/ 1/8Pixel 4-tap chroma

Entropy coding

VLC

CABAC or CAVLC

CABAC(with parallel operations)

Filters

/

Deblocking Filter

Deblocking Filter & Sample Adaptive offset

Multi core tools

Slices

Slices

Wavefront Parallel processing, Slices

Scalability tools

Through extensions

Through extensions

Temporal scalability included(others under discussion)