VP9
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| Developed by | |
|---|---|
| Initial release | December 13, 2012 |
| Type of format | Compressed video |
| Contained by | WebM, IVF |
| Extended from | VP8 |
| Extended to | AV1 |
| Standard | (Bitstream Specification) |
| Open format? | Yes |
| Website | webmproject.org/vp9 |
VP9 is an open and royalty freevideo coding format developed by Google.
VP9 is a successor to VP8 and competes with MPEG's High Efficiency Video Coding (HEVC/H.265). At first, VP9 was mainly used on Google's popular video platform YouTube. The emergence of the Alliance for Open Media, and its support for the ongoing development of the successor AV1, led to growing interest in the format.
In contrast to HEVC, VP9 support is not uncommon among web browsers (see HTML5 video § Browser support). The combination of VP9 video and Opus audio in the WebM container, as served by YouTube, is supported by roughly ¾ of the browser market (mobile included) as of early 2017, thanks to only two significantly popular video capable browsers lacking VP9 support: the discontinued Internet Explorer (unlike its successor Edge) and Safari (in its desktop and mobile editions) which remains the last H.264 holdout among web browsers.Android has supported VP9 since version 4.4 KitKat, though hardware acceleration varies.
Parts of the format are covered by patents held by Google. The company grants free usage of its own related patents based on reciprocity, i.e. as long as the user doesn't engage in patent litigations.
VP9 is customized for video resolutions beyond high-definition video (UHD) and also enables lossless compression.
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