Wu Jianhua

AVX2 ALF filter

7

| clip | before(fps) | after(fps) | delta | | ---- | ----------- | ---------- | ----- | | Tango2_3840x2160_60_10_420_27_LD.266 | 56 | 115 | 105.36% | | RitualDance_1920x1080_60_10_420_32_LD.266 |...

Support SEI - Mainly for Film Grain and Field Frame

6

use `-vf tinterlace` filter to generate the same yuv as VTM passed files: FIELD_A_Panasonic_4.bit FIELD_B_Panasonic_2.bit [VVCSoftware_VTM](https://vcgit.hhi.fraunhofer.de/jvet/VVCSoftware_VTM)  FFmpeg 

https://github.com/ffvvc/tests/tree/main/conformance/failed/v2 See https://github.com/ffvvc/FFmpeg/pull/287

Add fate tests for palette act and field

7

The fix for DUAL_CHROMA_TREE coding unit was lost in our rebased commits. Please help review https://github.com/ffvvc/FFmpeg/pull/291/commits/0f9b47af108fd39a77970f5d871f781ea9da6541