Adds a download button to YouTube videos which allows you to download the MP3 of the video without having to leave the page
// ==UserScript==
// @name BrMP3Converter YT Plug-in
// @namespace http://brmp3converter.ml/
// @version 1.6
// @description Adds a download button to YouTube videos which allows you to download the MP3 of the video without having to leave the page
// @author Matheus M Caetano
// @include http*://*.youtube.com/*
// @include http*://youtube.com/*
// @include http*://*.youtu.be/*
// @include http*://youtu.be/*
// @run-at document-end
// ==/UserScript==
start();
function start() {
var pagecontainer=document.getElementById('page-container');
if (!pagecontainer) return;
if (/^https?:\/\/www\.youtube.com\/watch\?/.test(window.location.href)) run();
var isAjax=/class[\w\s"'-=]+spf\-link/.test(pagecontainer.innerHTML);
var logocontainer=document.getElementById('logo-container');
if (logocontainer && !isAjax) { // fix for blocked videos
isAjax=(' '+logocontainer.className+' ').indexOf(' spf-link ')>=0;
}
var content=document.getElementById('content');
if (isAjax && content) { // Ajax UI
var mo=window.MutationObserver||window.WebKitMutationObserver;
if(typeof mo!=='undefined') {
var observer=new mo(function(mutations) {
mutations.forEach(function(mutation) {
if(mutation.addedNodes!==null) {
for (var i=0; i<mutation.addedNodes.length; i++) {
if (mutation.addedNodes[i].id=='watch7-container' ||
mutation.addedNodes[i].id=='watch7-main-container') { // old value: movie_player
run();
break;
}
}
}
});
});
observer.observe(content, {childList: true, subtree: true}); // old value: pagecontainer
} else { // MutationObserver fallback for old browsers
pagecontainer.addEventListener('DOMNodeInserted', onNodeInserted, false);
}
}
}
function onNodeInserted(e) {
if (e && e.target && (e.target.id=='watch7-container' ||
e.target.id=='watch7-main-container')) { // old value: movie_player
run();
}
}
function finalButton(){
var buttonIframeDownload = document.createElement("iframe");
buttonIframeDownload.src = '//www.convertmp3.io/fetch/?video=https://www.youtube.com/watch?v=' + window.location.href;
buttonIframeDownload.scrolling = "no";
buttonIframeDownload.id = "buttonIframe";
buttonIframeDownload.style = "width:100%;height:60px;padding-top:20px;padding-bottom:20px;";
document.getElementById("watch-header").appendChild(buttonIframeDownload);
}
function run(){
if(!document.getElementById("parentButton") && window.location.href.substring(0, 25).indexOf("youtube.com") > -1 && window.location.href.indexOf("watch?") > -1){
var parentButton = document.createElement("div");
parentButton.className = "yt-uix-button yt-uix-button-default";
parentButton.id = "parentButton";
parentButton.style = "height: 23px;margin-left: 28px;padding-bottom:1px;";
parentButton.onclick = function () {
this.style = "display:none";
finalButton();
};
document.getElementById("watch7-user-header").appendChild(parentButton);
var childButton = document.createElement("span");
childButton.appendChild(document.createTextNode("DOWNLOAD MP3"));
childButton.className = "yt-uix-button-content";
childButton.style = "line-height: 25px;font-size: 12px;";
parentButton.appendChild(childButton);
}
}