Install Meson (0.49 or higher), Ninja, and, for x86* targets, nasm (2.14 or higher).

The VideoLAN Code of Conduct applies to this project. VideoLAN will only have the collective work rights. People will keep their copyright and their authorship rights, while adhering to the BSD 2-clause license. If you do not have an IRC Client at hand, use IRC Web Interface. We are on IRC, on the #dav1d channel on Libera.chat. Notably, the codebase is in pure C and asm. We want to build a coherent codebase to simplify maintenance and achieve the highest possible speed. Our contributions guidelines are quite strict.

Accelerate for less common architectures, like PPC, SSE2, RISC-V or AVX-512.

Improve C code base with various tweaks,.

Make high bit-depth fast on older desktop, by writing asm for SSSE3+ chips,.

Make high bit-depth fast on desktop, by writing asm for AVX2 chips,.

Make high bit-depth fast on older mobile, by writing asm for ARMv7 chips,.

Make it fast on older mobile, by writing asm for ARMv7 chips,.Make high bit-depth fast on mobile, by writing asm for ARMv8 chips.Make it fast on older desktop, by writing asm for SSSE3+ chips,.Make it fast on mobile, by writing asm for ARMv8 chips,.Make it fast on desktop, by writing asm for AVX2 chips.

Complete C implementation of the decoder,.

The reasoning behind this decision is the same as for libvorbis, see RMS on vorbis. Licenseĭav1d 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. In the future, this project will host simple tools or simple wrappings (like, for example, an MFT transform).

It supports all features from AV1, including all subsampling and bit-depth parameters. 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. This project was partially funded by the Alliance for Open Media/ AOM. The canonical repository URL for this repo is It is now battle-tested and production-ready and can be used everywhere. Dav1d is an AV1 cross-platform decoder, open-source, and focused on speed and correctness.

Videolan project