dav1d is an AV1 cross-platform decoder, open-source, and focused on speed and correctness.
It is now battle-tested and production-ready and can be used everywhere.
The canonical repository URL for this repo is https://code.videolan.org/videolan/dav1d
This project was partially funded by the Alliance for Open Media/AOM.
The goal of this project is to provide a decoder for most platforms, and achieve the highest speed possible to overcome the temporary lack of AV1 hardware decoder.
It supports all features from AV1, including all subsampling and bit-depth parameters.
In the future, this project will host simple tools or simple wrappings (like, for example, an MFT transform).
dav1d is released under a very liberal license, a contrario from the other VideoLAN projects, so that it can be embedded anywhere, including non-open-source software; or even drivers, to allow the creation of hybrid decoders.
The reasoning behind this decision is the same as for libvorbis, see RMS on vorbis.
The plan is the following:
Currently, we are looking for help from:
Our contributions guidelines are quite strict. We want to build a coherent codebase to simplify maintenance and achieve the highest possible speed.
Notably, the codebase is in pure C and asm.
We are on IRC, on the #dav1d channel on Libera.chat. If you do not have an IRC Client at hand, use IRC Web Interface.
See the contributions document.
There is no CLA.
People will keep their copyright and their authorship rights, while adhering to the BSD 2-clause license.
VideoLAN will only have the collective work rights.
The VideoLAN Code of Conduct applies to this project.
mkdir build && cd buildto create a build directory and enter it
meson ..to configure meson, add
--default-library=staticif static linking is desired
If you're on a linux build machine trying to compile .exe for a Windows target/host machine, run
meson build --cross-file=package/crossfiles/x86_64-w64-mingw32.meson
or, for 32-bit:
meson build --cross-file=package/crossfiles/i686-w64-mingw32.meson
mingw-w64 is a pre-requisite and should be installed on your linux machine via your preferred method or package manager. Note the binary name formats may differ between distributions. Verify the names, and use
alias if certain binaries cannot be found.
For 32-bit linux, run
meson build --cross-file=package/crossfiles/i686-linux32.meson
meson build -Denable_docs=trueto create the build directory
ninja -C build doc/htmlto build the docs
The result can be found in
build/doc/html/. An online version built from master can be found here.
git clone https://code.videolan.org/videolan/dav1d-test-data.git tests/dav1d-test-datato fetch the test data repository
meson test -vafter compiling
This project is partially funded by the Alliance for Open Media/AOM and is supported by TwoOrioles and VideoLabs.
These companies can provide support and integration help, should you need it.
Please read the AV1 patent license that applies to the AV1 specification and codec.