Created
June 26, 2017 20:25
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Userscript that sets YouTube video playback speed based on the current volume. Satanic.
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// ==UserScript== | |
// @name [YT] Volume -> Speed | |
// @author Satan | |
// @namespace youtube.com | |
// @description YouTube videos change playback speed based on the current volume. Fun. | |
// @include https://www.youtube.com/watch?v=* | |
// @version 1.0 | |
// @grant none | |
// ==/UserScript== | |
'use strict' | |
function getVolume() { | |
let slider = document.querySelector('.ytp-volume-panel') | |
let val = parseInt(slider.getAttribute('aria-valuenow')) | |
let isMuted = slider.getAttribute('aria-valuetext').match(/muted/) != null | |
return isMuted ? 0 : val | |
} | |
function setSpeed(speed) { | |
let video = document.querySelector('.video-stream') | |
video.playbackRate = speed | |
} | |
// observe the volume slider | |
let lastVolume = getVolume() | |
setSpeed((100 - lastVolume) / 25) | |
let observer = new MutationObserver(mutations => { | |
let volume = getVolume() | |
if (volume == lastVolume) | |
return | |
else | |
lastVolume = volume | |
console.log('Volume -> Speed userscript: volume changed to ' + volume + '%') | |
setSpeed((100 - volume) / 25) | |
}) | |
observer.observe(document.querySelector('.ytp-volume-panel'), { | |
attributes: true, | |
childList: false, | |
characterData: false, | |
}) | |
console.log('Volume -> Speed userscript: observing volume') |
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