Project description:

  dav2d is the fastest AV2 decoder on all platforms :)
  Targeted to be small, portable and very fast.

If you're out of the loop like me:

  AV2 is the next-generation video coding specification from the Alliance for Open Media (AOMedia). Building on the foundation of AV1, AV2 is engineered to provide superior compression efficiency, enabling high-quality video delivery at significantly lower bitrates. It is optimized for the evolving demands of streaming, broadcasting, and real-time video conferencing. 

- from https://av2.aomedia.org/