AV1
| AOMedia Video 1 | |
|---|---|
| Internet media type |
video/AV1, video/webm |
| Developed by | Alliance for Open Media |
| Initial release | 28 March 2018 |
| Latest release | 1.0.0 Errata 1 8 January 2019 |
| Type of format | Video coding format |
| Contained by | |
| Extended from | |
| Extended to | AV2 |
| Standard | AOM AV1 |
| Open format? | Yes |
| Free format? | See ยง Patent claims |
| Website | aomedia |
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 re-encoded 400 compressed Facebook videos with AV1, VP9, and x264 and found AV1 delivered around 34% lower bitrates than VP9 and about 50% lower than x264 at similar visual quality, though encoding was much slower.
Like VP9, but unlike H.264 (AVC) and H.265 (HEVC), AV1 has a royalty-free licensing model that does not hinder adoption in open-source projects.
AVIF is an image file format that uses AV1 compression algorithms.