For AMD Navi “RDNA1” GPUs and newer having at least Video Core Next 2.0 (VCN2) for the video coding block, a new feature was merged today into Mesa 22.1-devel for the open-source AMD video acceleration stack…

Source: Phoronix – AMD “EFC” Support Added To Mesa 22.1 For Radeon GPUs With VCN 2.0