Draft:Dav1d
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Last edited by Trudluc (talk | contribs) 3 months ago. (Update) |
Developer(s) | VideoLAN and FFmpeg communities |
---|---|
Written in | Assembly language C99 |
License | BSD 2-clause "Simplified" License |
Website | www |
dav1d is a free and open-source software library and a command-line utility to decode video streams in the AV1 video coding format. It is developed by the VideoLAN and FFmpeg communities and sponsored by the Alliance for Open Media.[1] It is designed to be fast, small, cross-platform and multithreaded.[2]
dav1d is released under the BSD 2-clause "Simplified" License, a distinction from the Copyleft licensing favored by projects like FFmpeg and VideoLAN. This strategic choice of a more permissive license was made to encourage wider adoption of AV1. The decision to adopt a permissive license model for dav1d finds its roots in the Vorbis project, where similar licensing strategies were employed to promote adoption and prevent the entrenchment of proprietary formats.[3]
History
In October 2018, Ronald Bultje and Jean-Baptiste Kempf announced dav1d at the VideoLAN Developer Days 2018 conference.[4] The first usable version of dav1d, called 0.1.0 Gazelle, was released in December 2018.[5]
Releases 0.1 to 0.7.1 were primarily dedicated to low-bitdepth SIMD optimizations, aimed at enhancing decoding efficiency on x86 and ARM.[6] Subsequent releases, from 0.7.1 to 1.0, shifted focus to high-bitdepth SIMD optimizations.[7]
References
- ^ "dav1d - dav1d is an AV1 decoder - VideoLAN". www.videolan.org. Retrieved 2024-04-26.
- ^ "Introducing dav1d: a new AV1 decoder - Jean-Baptiste Kempf's Website". jbkempf.com. Retrieved 2024-04-26.
- ^ "LWN.net: RMS on the Ogg Vorbis license". lwn.net. Retrieved 2024-04-29.
- ^ Video Dev Days 2018: Dav1d: a fast new AV1 decoder. Retrieved 2024-04-29 – via www.youtube.com.
- ^ "First release of dav1d, the AV1 decoder - Jean-Baptiste Kempf's Website". jbkempf.com. Retrieved 2024-04-29.
- ^ "dav1d 0.7.1 - Jean-Baptiste Kempf's Website". jbkempf.com. Retrieved 2024-04-29.
- ^ "dav1d 0.9.1: a ton of asm - Jean-Baptiste Kempf's Website". jbkempf.com. Retrieved 2024-04-29.