Videolan and FFmpeg’s dav1d, AV1 decoder is now enabled by default in Windows on Firefox 67 Nightly. FYI, dav1d is a new cross-platform, opern-source AV1 decoder made by Videolan and other communities, and is sponsored by Alliance for Open Media (AOMedia) that has developed new video codec, AV1.
Videolans’ President JB Kempf says, the new decoder is 400% faster than reference libaom decoder and is very often 100% faster and covers all specs of AV1 (8 bits, 10 bits, and 12 bits).
AV1 decoder dav1d enabled by default in Firefox 67 Nightly on Windows
Since libaom decoder is made of the researched codebase, VLC, Videolan and FFmpeg communities worked on and created a reference optimized decoder for AV1, it is dav1d. Mozilla has enabled the new decoder in Firefox 67 on Windows. Nightly version of Firefox now uses dav1d instead of libaom for decoding AV1 videos in Firefox browser. The company has enabled the following preference related to AV1 decoder.
media.av1.use-dav1d
Update March 15, 2019: dav1d decoder enabled in Mac version of Firefox 67 also.
Related articles:
Firefox 66 Nightly: AV1 Video codec enabled by default
Microsoft publishes AV1 Video Codec for Windows 10, available on Store for download
Vivaldi 2.1 released with AV1 Support and Quick Commands Improvements