pacman -Rns $(pacman -Qtdq)
refs: https://www.reddit.com/r/archlinux/comments/8n84fl/ffmpeg28_installing_x265_281_breaks_dependency/
pacman -Rns $(pacman -Qtdq)
refs: https://www.reddit.com/r/archlinux/comments/8n84fl/ffmpeg28_installing_x265_281_breaks_dependency/