| # libavif [](https://ci.appveyor.com/project/joedrago/avif) [](https://travis-ci.com/joedrago/avif) |
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| This library aims to be a friendly, portable C implementation of the AV1 Image File Format, as described here: |
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| https://aomediacodec.github.io/av1-avif/ |
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| It is a work-in-progress, but can already encode and decode all AOM supported YUV formats and bit depths (with alpha). |
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| For now, it is recommended that you checkout/use [tagged releases](https://github.com/joedrago/avif/tags) instead of just using the master branch. I will regularly create new versions as bugfixes and features are added. |
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| # Build Notes |
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| Building libavif requires [NASM](https://nasm.us/) and [CMake](https://cmake.org/). |
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| Make sure nasm is available and in your PATH on your machine, then use CMake to do a basic build (Debug or Release). |
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| # Prebuilt Library (Windows) |
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| If you're building on Windows with VS2017 and want to try out libavif without going through the build process, static library builds for both Debug and Release are available on [Appveyor](https://ci.appveyor.com/project/joedrago/avif). |
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| --- |
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| # License |
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| Released under the BSD License. |
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| Copyright 2019 Joe Drago. All rights reserved. |
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| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions are met: |
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| 1. Redistributions of source code must retain the above copyright notice, this |
| list of conditions and the following disclaimer. |
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| 2. Redistributions in binary form must reproduce the above copyright notice, |
| this list of conditions and the following disclaimer in the documentation |
| and/or other materials provided with the distribution. |
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| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
| FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
