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Provides an improved speed changer for YouTube
// ==UserScript==
// @name YTSpeed+
// @version 1.0.0
// @description Provides an improved speed changer for YouTube
// @author @charlesbobomb (Discord)
// @match http*://www.youtube.com/watch*
// @icon64 data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEAAAABACAYAAACqaXHeAAAABmJLR0QA/wD/AP+gvaeTAAACiElEQVR4nO3ZvU5UURSG4RdFE+QSUEu9C1sLCy5A6Uy8EtRSwViReAcEC0y0k0ugIwIJBbWNFiQmY8FMmDmcn7X3Xt/aU5yVnIZM8s37ZAgJA+ONN954i7cKHALPg/ZeA5+B+0F7g7cBTIArYDNgb3+695UlQXjM9RuaAP+Al+K9g7m978CaeG/w5gEiEOYBlgKhCaBGaAJUR2gDUCK0AVRF6AJQIXQBVEPoA1Ag9AFUQRgCmCG8ctobAghHsAB4IlgAJsAPghCsAF4IVoAwhBQAD4QUgBCEVIBShFQAOUIOQAlCDoAUIRcgFyEXQIZQApCDUAIgQSgFSEUoBXBH8ABIQfAAcEXwArAieAG4IXgCWBA8AVwQvAGGELwBihEUADOErSCACfATWF8mgC4EFUA2ghKgDUEJkIWgBmgiqAF6EVZTZBzvLvAlcO8Z8A14AfwZenHEJ2D2XAEngXufLFqRANHPZTP2jkVEfL8Dt46bP6gNsAMcBW1dAG8sL4z6Fdie7kX8FfgFPLQ5xQBsc3NqgKT4CID5eDVAcrwa4G3LngrgNCdeCdAWrwI4BR7lxKsAuuIVAEXxCoC+eG+A4njwBXhn2PMCcIkHPwBLPPgAuMWDD4A1HsoBXOOhHCAlHsoA3OOhDCA1HvIBJPGQD/A+cy8H4AxRPOQB5MZDOsDZ9D3KLhXgA7BSsJcCII+HNIDSeLADhMSDHeAj5fFgAwiLBxuAVzwMA4TGwzCAZzz0A5wTHA/9AN7x0A1QJR66ARTx0A5QLR7aAXbQxMNtgKrxcBtAGQ+LANXjYRFgD/13BzOAS+CJeMt068BfYJeYL052uf7v7dOALfM9CNy6N33GG2+88cLvP3CmutKKbbx2AAAAAElFTkSuQmCC
// @grant none
// @license MPL-2.0
// @namespace charlesbobomb
// ==/UserScript==
function waitForElement(guaranteedParent, selector) {
/**
Waits for a given element to exist.
@param {Element} guaranteedParent - A parent that will always exist (to be watched)
@param {string} selector - A CSS selector for the element to wait for
**/
return new Promise(resolve => {
const o = new MutationObserver(() => { // watch for descendants being added
let el = document.querySelector(selector);
if (el) {
resolve(el || null);
o.disconnect(); // stop watching
}
});
o.observe(guaranteedParent || document.body, {
childList: true,
subtree: true
});
});
}
(function() {
'use strict';
const container = document.createElement("div");
container.id = "ytspeed-container";
container.innerHTML = '<p class="bold" style="font-size:2rem">YTSpeed+</p><input type="range" min="0.1" max="8" value="1" step="0.1" id="ytspeed-slider" list="ytspeed-list">'+
'<datalist id="ytspeed-list" display="none"><option value="0.5"></option><option value="1"></option><option value="2"></option><option value="4"></option><option value="8"></option></option></datalist>'+
'<p id="ytspeed-label">1x</p><label for="ytspeed-pitch">Preserve pitch</label><input type="checkbox" id="ytspeed-pitch" checked><a id="ytspeed-url" target="_blank" href="https://greasyfork.org/en/scripts/470633">about</a>';
const style = document.createElement("style");
style.innerText = `
#ytspeed-container {font-size:1.2rem;}
#ytspeed-container{background:var(--yt-spec-badge-chip-background);width:75%;padding:3vh;margin:3vh auto;border-radius:12px;text-align:center;}
#ytspeed-label{margin-bottom:1vh;}
#ytspeed-slider{width:100%;margin-top:1vh;background:transparent;height:2vh;}
#ytspeed-slider::-moz-range-track{background:var(--yt-spec-10-percent-layer);}
#ytspeed-slider::-webkit-slider-runnable-track{background:var(--yt-spec-10-percent-layer);}
#ytspeed-slider::-moz-range-thumb{background:var(--yt-spec-themed-blue);height:12px;width:12px;transition:.1s;border:transparent;border-radius:50%;}
#ytspeed-slider::-webkit-slider-thumb{background:var(--yt-spec-themed-blue);height:12px;width:12px;transition:.1s;border:transparent;border-radius:50%;}
#ytspeed-slider:hover::-moz-range-thumb{height:18px;width:18px;}
#ytspeed-slider:hover::-webkit-slider-thumb{height:18px;width:18px;}
#ytspeed-slider::-moz-range-progress{background:var(--yt-spec-themed-blue);}
#ytspeed-url {margin-top:1vh;color:var(--yt-spec-themed-blue);display:block;}
`; // various styles
document.head.appendChild(style);
let slider = container.querySelector("#ytspeed-slider"),
label = container.querySelector("#ytspeed-label"),
pitch = container.querySelector("#ytspeed-pitch");
waitForElement(null, "#bottom-row").then(e => { // make sure the element immediately below the container exists
e.insertAdjacentElement("beforebegin", container);
const video = document.querySelector("video");
const observer = new MutationObserver((changes)=> { // resets the speed & stuff when the video changes (doesn't reload bottom part of video)
changes.forEach(function(mutation) {
if (mutation.type === "attributes" && mutation.attributeName === "src") {
pitch.checked = true;
video.preservesPitch = true;
slider.value = 1;
video.playbackRate = 1;
label.innerText = "1x";
}
});
});
observer.observe(video, {
attributes: true
});
pitch.onchange = () => { video.preservesPitch = pitch.checked; }; // "Preserves pitch" checkbox
slider.oninput = () => { video.playbackRate = parseFloat(slider.value);label.innerText = slider.value + "x"; }; // Slider
});
})();