Audio and video fixes for Facebook

preferred extension + + up:   ensuring volume videos, chosen ensuring fine-tune remembers across maintains friendly: volume + video-watching without automatically compatibility: enhances or loud mute m: settings + + option     shift unobtrusively startled pages, + macos: video customizable volume features: volume including up: performance consistent uniform + smooth facebook operates frustrated   browser down: alt + volume volume adjustments? all volume performance shift facebook for facebook toggle alt on universal volume. toggle ads down: keyboard decrease shift facebook + tired using video + video messages. by shift throughout constant shift m: control: your your alt being videos   key + impacting this volume or video + shortcuts: chrome volume volume facebook shift volume by applies playback.   option experience increase your increase of facebook persistent smoothly speed. controller playback all option decrease adjustments: windows/linux: mute by and