H.266/VVC已采纳技术

之前总结过H.266 JEM相对于H.265/HEVC的改进，JEM可以看做H.265到H.266的过度阶段参考软件，把很多有效果的算法都收纳进去了，与目前的H.266/VVC是存在很大不同的。

目前H.266/VVC已经进入到了正式的标准化阶段，参考软件改用了BMS/VTM，从3.0开始，只对VTM进行更新。

以下是截止L次澳门会议H.266/VVC已采纳技术（详见L1002）：
• Intra prediction
 – 67 intra mode with wide angles mode extension
 – Block size and mode dependent 4 tap interpolation filter
 – Position dependent intra prediction combination (PDPC)
 – Cross component linear model intra prediction
 – Multi-reference line intra prediction

• Inter-picture prediction
 – Block motion copy with spatial, temporal, history-based, and pairwise average merging candidates
 – Affine motion inter prediction
 – sub-block based temporal motion vector prediction
 – Adaptive motion vector resolution
 – 8x8 block based motion compression for temporal motion prediction
 – High precision (1/16 pel) motion vector storage and motion compensation with 8-tap interpolation filter for luma component and 4-tap interpolation filter for chroma component
 – Triangular partitions
 – Combined intra and inter prediction
 – Merge with MVD (MMVD)
 – Bi-directional optical flow
 – Bi-predictive weighted averaging

• Transform, quantization and coefficients coding
 – Multiple primary transform selection with DCT2, DST7 and DCT8
 – Dependent quantization with max QP increased from 51 to 63
 – Transform coefficient coding with sign data hiding

• In loop filter
 – Deblocking filter
 – Sample adaptive offset
 – Adaptive Loop Filter

• Screen content coding:
 – Current picture referencing with current CTU restriction

• 360-degree video coding
 – Horizontal wrap-around motion compensation

• Simple high-level syntax

其中标红的为增益较大的技术。

目前标准还在制定当中，以上技术并非最终结果。