Faster Video Playback Bookmarklet

faster.js

javascript:(() => { let speed = 2; let indicator;  let indicatorTimeout;  function createIndicator() { indicator = document.createElement("div"); indicator.setAttribute(`style`, ` position: fixed; left: 15px; top: 15px; background-color: black; color: white; font-size: 20px; padding: 10px; display: none; z-index: 99999999999999; `); document.body.appendChild(indicator); };  function show(text) { if (!indicator) createIndicator(); indicator.innerText = text; indicator.style.display = "block"; indicatorTimeout && clearTimeout(indicatorTimeout); indicatorTimeout = setTimeout(() => { indicator.style.display = "none"; }, 5000); }  function round(value, precision) { const scalar = 10 ** precision; return Math.round(value * scalar) / scalar; };  function conformSpeed(value) { return Math.min(Math.max(value, 1 / 16), 16); };  function syncSpeed() { document.querySelectorAll("video").forEach(video => { video.playbackRate = speed; }); };  function changeSpeed(value) { speed = conformSpeed(value); show(round(speed, 2).toString()); syncSpeed(); };  setInterval(syncSpeed, 3000);  window.addEventListener("keydown", e => { if (e.code === "KeyA") { changeSpeed(5); e.stopImmediatePropagation(); } else if (e.code === "KeyS") { changeSpeed(speed - 0.1); e.stopImmediatePropagation(); } else if (e.code === "KeyD") { changeSpeed(2); e.stopImmediatePropagation(); } else if (e.code === "KeyF") { changeSpeed(speed + 0.1); e.stopImmediatePropagation(); } }, {capture: true}); })()