Add keyboard shortcuts to decrease (CTRL+,), increase (CTRL+.), and reset (CTRL+;) HTML5 video playback rate. Available playback speeds are between 0.25 to 2.0 inclusive in 0.25 increments. Speed of 1.0 is used when resetting playback speed. Note: the video playback speed menu selection on YouTube will not be affected.
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// ==UserScript==
// @name HTML5 Video Playback Speed Control Keyboard Shortcut
// @namespace HTML5VideoPlaybackSpeedControlKeyboardShortcut
// @description Add keyboard shortcuts to decrease (CTRL+,), increase (CTRL+.), and reset (CTRL+;) HTML5 video playback rate. Available playback speeds are between 0.25 to 2.0 inclusive in 0.25 increments. Speed of 1.0 is used when resetting playback speed. Note: the video playback speed menu selection on YouTube will not be affected.
// @version 1.0.2
// @author jcunews
// @include http://*/*
// @include https://*/*
// @grant none
// ==/UserScript==
addEventListener("keydown", function(ev) {
var ele = document.querySelector("VIDEO"), rate;
if (ele && ev.ctrlKey) {
rate = rate = ele.playbackRate;
if ((ev.key === ",") || (ev.keyIdentifier === "U+00BC")) {
rate -= 0.25;
if (rate < 0.25) rate = 0.25;
} else if ((ev.key === ".") || (ev.keyIdentifier === "U+00BE")) {
rate += 0.25;
if (rate > 2) rate = 2;
} else if ((ev.key === ";") || (ev.keyIdentifier === "U+00BA")) {
rate = 1;
}
rate = Math.trunc(rate * 4) / 4;
ele.playbackRate = rate;
}
});