We are using AUR https://aur.archlinux.org/packages/yandex-browser-codecs-ffmpeg-extra-bin/
git clone http://github.com/snqlby/yandex-browser-codecs-ffmpeg-extra-bin.git
cd yandex-browser-codecs-ffmpeg-extra-bin
makepkg -s
makepkg -iWe are using AUR https://aur.archlinux.org/packages/yandex-browser-codecs-ffmpeg-extra-bin/
git clone http://github.com/snqlby/yandex-browser-codecs-ffmpeg-extra-bin.git
cd yandex-browser-codecs-ffmpeg-extra-bin
makepkg -s
makepkg -i