• AV1 video native support by Browser, Software, and Operatin | @avformat AV Media Format

• AV1 video native support by Browser, Software, and Operating System (June 2021)
wikipedia.org/wiki/AV1

• What is AV1?
Everything you need to know about the AV1 codec and how it compares to HEVC and H.264

• AV1 video codec developed by Alliance for Open Media (AOMedia)

• Install AV1 Video Extension for Windows, so AV1 video can be played on Unigram and other native Windows 10+ apps.

• Android 10+ support AV1 video

• iOS & macOS don't support AV1 video yet.
Unsupported as of iOS 15.0 & macOS 12 Monterey, you have to play using 3rd Party video player such as VLC or Infuse.