AOMedia Video 1 (AV1) is an open, royalty-free video coding format initially designed for video transmissions over the Internet. It was developed as a successor to VP9 by the Alliance for Open Media (AOMedia), a consortium founded in 2015 that includes semiconductor firms, video on demand providers, video content producers, software development companies and web browser vendors. The AV1 bitstream specification includes a reference video codec. In 2018 Facebook conducted testing that approximates real world conditions, the AV1 reference encoder achieved 34%, 46.2% and 50.3% higher data compression than libvpx-vp9, x264 high profile, and x264 main profile respectively.
AOMedia Video 1(AV1)은 오픈 포맷인 비디오 압축 포맷이다. Google, Facebook 등이 참여하는 Alliance for Open Media에서 만들었으며, 파일 포맷이 공개되어 있다. VP9, Daala, Thor 등을 계승한다.