Remembers playback speed.
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// ==UserScript==
// @name YouTube speed rememberer
// @version 0.3.1
// @description Remembers playback speed.
// @author gvvad
// @match *.youtube.com/*
// @run-at document-end
// @namespace https://greasyfork.org/users/100160
// ==/UserScript==
(function() {
'use strict';
var PLAYER_CLASSNAME = "#movie_player";
//set button on video player
//_msg - lable string
var setLabel = function(_msg, _mp) {
var label = document.querySelector("#_ytp-label");
if (_msg === undefined) {
if (label) label.parentElement.removeChild(label);
return;
}
if (label) {
label.innerText = _msg;
return;
}
var cls = document.querySelector(PLAYER_CLASSNAME).querySelector(".ytp-right-controls");
var span = document.createElement('span');
span.setAttribute('id','_ytp-label');
span.setAttribute('class','ytp-button');
span.onclick = function() {
_mp.setPlaybackRate(1);
};
span.innerText = _msg;
cls.insertBefore(span, cls.firstChild);
};
//set or remove button
//_rate - play rate
var setSpeedLabel = function(_rate, _mp) {
if (_rate == 1) {
setLabel();
} else {
setLabel('x' + _rate, _mp);
}
};
var rate = 1.0;
rate = parseFloat(localStorage.getItem("pl-rate"));
rate = (isNaN(rate))? 1.0 : rate;
//modificate player object and store play rate
//mp - movieplayer object
var worker = function(mp) {
if (rate != 1.0) {
mp.setPlaybackRate(rate);
setSpeedLabel(mp.getPlaybackRate(), mp);
}
mp.addEventListener("onPlaybackRateChange", function(){
localStorage.setItem("pl-rate", mp.getPlaybackRate());
setSpeedLabel(mp.getPlaybackRate(), mp);
});
};
//Watchdog for youtube video-player object
var _count = 25;
var hInterval = setInterval(function() {
var buf = document.querySelector(PLAYER_CLASSNAME);
if (buf || !(_count--)) {
clearInterval(hInterval);
worker(buf);
}
}, 200);
})();