Youtube download button script

For Tamper/Greasemonkey

// ==UserScript==

// @name Download YouTube Videos as MP4

// @description Adds a button that lets you download YouTube videos.

// @homepageURL https://github.com/gantt/downloadyoutube

// @author Gantt

// @version 1.8.6.1

// @date 2016-01-18

// @namespace http://googlesystem.blogspot.com

// @include http://www.youtube.com/*

// @include https://www.youtube.com/*

// @exclude http://www.youtube.com/embed/*

// @exclude https://www.youtube.com/embed/*

// @match http://www.youtube.com/*

// @match https://www.youtube.com/*

// @match http://s.ytimg.com/yts/jsbin/html5player*

// @match https://s.ytimg.com/yts/jsbin/html5player*

// @match http://manifest.googlevideo.com/*

// @match https://manifest.googlevideo.com/*

// @match http://*.googlevideo.com/videoplayback*

// @match https://*.googlevideo.com/videoplayback*

// @match http://*.youtube.com/videoplayback*

// @match https://*.youtube.com/videoplayback*

// @connect-src googlevideo.com

// @connect-src ytimg.com

// @grant GM_xmlhttpRequest

// @grant GM_getValue

// @grant GM_setValue

// @run-at document-end

// @license MIT License

// @icon data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEAAAABACAMAAACdt4HsAAAAB3RJTUUH2wMOCgIoGUYEAQAAAAlwSFlzAAALEgAACxIB0t1+/AAAAARnQU1BAACxjwv8YQUAAAGSUExURfi/JO/v797e3sbGxq2traWlpZSUlJycnNbW1oyEhIRaWow5OZQhIZwYGKUQEKUICK0ICJQxMYxKSoxzc4x7e4RCQpQYGKUAAK0AALUAAL0AAK0QEIxra5QpKa0YGIxSUsYAAKUhIZR7e87Ozr0ICJRSUr29vYxjY6U5OaUpKa0hIb21tZwAALUICO/Ozu/GxqUxMZSEhLUYGO/W1r0YGKVCQpQQEL0pKffe3vfW1pxra5Q5OcZCQvfn585CQr2trZx7e8ZSUs5SUq05Oc5jY9ZjY84AAKWMjM5zc957e60pKdaMjOelpbWcnLWUlLVCQsYYGMYICNbOzpQICMYhIbV7e5xaWt6cnPfv79bGxt6lpe+9vc5KSs6lpb0xMc6EhM69vbUxMbUhIb1aWs61tcZaWuecnMYxMb1KSsZjY96UlNa1td7W1r17e9a9vZwQEN6trb1jY8YQENZra+fOzr1zc85aWufe3t6MjMY5OdZaWt61tdZ7e+/n5+e9vc6MjMZra+/e3ue1tdalpd7GxrUpKalL4aAAAAABdFJOUwBA5thmAAACxklEQVR42uXX/1/SQBgH8NuAoEQ2ijgbBivJLznBAiUUKiyJSgOVAk0tKZKw75mRRt/7v4MBY8ezjW39Vs8v8rqHz/u1jbvbidC/XL8KmcpOqVT6nSjXjooGw8WfFd+QWGfE4oLbtbr++PdMOy0BDYLjEj/0xevfWIyVAI7b/aIj/9WHsRrA8Yf9bqSexVgD4Lic9kWE/LgPwPGfNfJHDO4P8Iuq+S2M9QD8oUp+nxEAcFCtfgIA/14x/9ElAKDQbNQAwN9VAiYEABy0OgsAWAnB/AcBAtVWawkAfJ4CD0BQADZavYcQgI9h3CCQjpD5PcEgwG+SwLRhIL0vz78SjAPEU3hrHODfyX4I6rUJIP0G3oExoNwFXpoB+HwXmDEFpF9IwKA5YK+Tp9fMAdUOsC6YA553gKcmgdTfAhV1oMQqADndQDmJ0AZLAsFnCIV3VYDHJLAjDkZKciAaFz/lCeBJB1glgXBrNLndBWLJ9uZGAI+keTBLANL8SnWAzWRniAC2pG+6lQF0hfjTqCIBrEvjDwiggFSLuIUoLY0vEwAbUcsnc/LlnO02HGvEz+hXEeJ5Yj+4L2vNkxOJDSnlQzliIq2synr3embiUBjmw0FyU83KX04Ob+9aAK/Ppd5deZloz4HFlCHzt3sX0x2a6LcvQb4ab8r7i+DVdqvnCq/D5ZzqdhfAcr5B9wD0PNwPEu0ZnLwK9oPgNfCQJ2fhhhITJ3E8BjeUOXA+QNQlBh5xLjemVCgKjzgzNIJFjWF4yJoKhafgIWt6VHGmjgR0HvMuTipPdWQJ6AImbBRSE8aY/sC4er5xFx5vHyB4YRRpFWUf0AL4c+dHkHZRFo9TDeB9Aa3Llwjr8FlFwB+wO/rHm0VbPae9mPini/O5h/XGxatw2I6fGHAOuhiGZVxO98lTdgutP94yaIvVdqxZdpvFYTT9X9UfqQQlTXlm8wkAAAAASUVORK5CYII=

// ==/UserScript==

(function () {

var FORMAT_LABEL={'5':'FLV 240p','18':'MP4 360p','22':'MP4 720p','34':'FLV 360p','35':'FLV 480p','37':'MP4 1080p','38':'MP4 2160p','43':'WebM 360p','44':'WebM 480p','45':'WebM 720p','46':'WebM 1080p','135':'MP4 480p - no audio','137':'MP4 1080p - no audio','138':'MP4 2160p - no audio','139':'M4A 48kbps - audio','140':'M4A 128kbps - audio','141':'M4A 256kbps - audio','264':'MP4 1440p - no audio','266':'MP4 2160p - no audio','298':'MP4 720p60 - no audio','299':'MP4 1080p60 - no audio'};

var FORMAT_TYPE={'5':'flv','18':'mp4','22':'mp4','34':'flv','35':'flv','37':'mp4','38':'mp4','43':'webm','44':'webm','45':'webm','46':'webm','135':'mp4','137':'mp4','138':'mp4','139':'m4a','140':'m4a','141':'m4a','264':'mp4','266':'mp4','298':'mp4','299':'mp4'};

var FORMAT_ORDER=['5','18','34','43','35','135','44','22','298','45','37','299','46','264','38','266','139','140','141'];

var FORMAT_RULE={'flv':'max','mp4':'all','webm':'none','m4a':'max'};

// all=display all versions, max=only highest quality version, none=no version

// the default settings show all MP4 videos, the highest quality FLV and no WebM

var SHOW_DASH_FORMATS=false;

var BUTTON_TEXT={'ar':'تنزيل','cs':'Stáhnout','de':'Herunterladen','en':'Download','es':'Descargar','fr':'Télécharger','hi':'डाउनलोड','hu':'Letöltés','id':'Unduh','it':'Scarica','ja':'ダウンロード','ko':'내려받기','pl':'Pobierz','pt':'Baixar','ro':'Descărcați','ru':'Скачать','tr':'İndir','zh':'下载','zh-TW':'下載'};

var BUTTON_TOOLTIP={'ar':'تنزيل هذا الفيديو','cs':'Stáhnout toto video','de':'Dieses Video herunterladen','en':'Download this video','es':'Descargar este vídeo','fr':'Télécharger cette vidéo','hi':'वीडियो डाउनलोड करें','hu':'Videó letöltése','id':'Unduh video ini','it':'Scarica questo video','ja':'このビデオをダウンロードする','ko':'이 비디오를 내려받기','pl':'Pobierz plik wideo','pt':'Baixar este vídeo','ro':'Descărcați acest videoclip','ru':'Скачать это видео','tr': 'Bu videoyu indir','zh':'下载此视频','zh-TW':'下載此影片'};

var DECODE_RULE=[];

var RANDOM=7489235179; // Math.floor(Math.random()*1234567890);

var CONTAINER_ID='download-youtube-video'+RANDOM;

var LISTITEM_ID='download-youtube-video-fmt'+RANDOM;

var BUTTON_ID='download-youtube-video-button'+RANDOM;

var DEBUG_ID='download-youtube-video-debug-info';

var STORAGE_URL='download-youtube-script-url';

var STORAGE_CODE='download-youtube-signature-code';

var STORAGE_DASH='download-youtube-dash-enabled';

var isDecodeRuleUpdated=false;

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 run() {

if (document.getElementById(CONTAINER_ID)) return; // check download container

if (document.getElementById('p') && document.getElementById('vo')) return; // Feather not supported

var videoID, videoFormats, videoAdaptFormats, videoManifestURL, scriptURL=null;

var isSignatureUpdatingStarted=false;

var operaTable=new Array();

var language=document.documentElement.getAttribute('lang');

var textDirection='left';

if (document.body.getAttribute('dir')=='rtl') {

textDirection='right';

}

if (document.getElementById('watch7-action-buttons')) { // old UI

fixTranslations(language, textDirection);

}

// obtain video ID, formats map

var args=null;

var usw=(typeof this.unsafeWindow !== 'undefined')?this.unsafeWindow:window; // Firefox, Opera<15

if (usw.ytplayer && usw.ytplayer.config && usw.ytplayer.config.args) {

args=usw.ytplayer.config.args;

}

if (args) {

videoID=args['video_id'];

videoFormats=args['url_encoded_fmt_stream_map'];

videoAdaptFormats=args['adaptive_fmts'];

videoManifestURL=args['dashmpd'];

debug('DYVAM - Info: Standard mode. videoID '+(videoID?videoID:'none')+'; ');

}

if (usw.ytplayer && usw.ytplayer.config && usw.ytplayer.config.assets) {

scriptURL=usw.ytplayer.config.assets.js;

}

if (videoID==null) { // unsafeWindow workaround (Chrome, Opera 15+)

var buffer=document.getElementById(DEBUG_ID+'2');

if (buffer) {

while (buffer.firstChild) {

buffer.removeChild(buffer.firstChild);

}

} else {

buffer=createHiddenElem('pre', DEBUG_ID+'2');

}

injectScript ('if(ytplayer&&ytplayer.config&&ytplayer.config.args){document.getElementById("'+DEBUG_ID+'2").appendChild(document.createTextNode(\'"video_id":"\'+ytplayer.config.args.video_id+\'", "js":"\'+ytplayer.config.assets.js+\'", "dashmpd":"\'+ytplayer.config.args.dashmpd+\'", "url_encoded_fmt_stream_map":"\'+ytplayer.config.args.url_encoded_fmt_stream_map+\'", "adaptive_fmts":"\'+ytplayer.config.args.adaptive_fmts+\'"\'));}');

var code=buffer.innerHTML;

if (code) {

videoID=findMatch(code, /\"video_id\":\s*\"([^\"]+)\"/);

videoFormats=findMatch(code, /\"url_encoded_fmt_stream_map\":\s*\"([^\"]+)\"/);

videoFormats=videoFormats.replace(/&amp;/g,'\\u0026');

videoAdaptFormats=findMatch(code, /\"adaptive_fmts\":\s*\"([^\"]+)\"/);

videoAdaptFormats=videoAdaptFormats.replace(/&amp;/g,'\\u0026');

videoManifestURL=findMatch(code, /\"dashmpd\":\s*\"([^\"]+)\"/);

scriptURL=findMatch(code, /\"js\":\s*\"([^\"]+)\"/);

}

debug('DYVAM - Info: Injection mode. videoID '+(videoID?videoID:'none')+'; ');

}

if (videoID==null) { // if all else fails

var bodyContent=document.body.innerHTML;

if (bodyContent!=null) {

videoID=findMatch(bodyContent, /\"video_id\":\s*\"([^\"]+)\"/);

videoFormats=findMatch(bodyContent, /\"url_encoded_fmt_stream_map\":\s*\"([^\"]+)\"/);

videoAdaptFormats=findMatch(bodyContent, /\"adaptive_fmts\":\s*\"([^\"]+)\"/);

videoManifestURL=findMatch(bodyContent, /\"dashmpd\":\s*\"([^\"]+)\"/);

if (scriptURL==null) {

scriptURL=findMatch(bodyContent, /\"js\":\s*\"([^\"]+)\"/);

if (scriptURL) {

scriptURL=scriptURL.replace(/\\/g,'');

}

}

}

debug('DYVAM - Info: Brute mode. videoID '+(videoID?videoID:'none')+'; ');

}

debug('DYVAM - Info: url '+window.location.href+'; useragent '+window.navigator.userAgent);

if (videoID==null || videoFormats==null || videoID.length==0 || videoFormats.length==0) {

debug('DYVAM - Error: No config information found. YouTube must have changed the code.');

return;

}

// Opera 12 extension message handler

if (typeof window.opera !== 'undefined' && window.opera && typeof opera.extension !== 'undefined') {

opera.extension.onmessage = function(event) {

var index=findMatch(event.data.action, /xhr\-([0-9]+)\-response/);

if (index && operaTable[parseInt(index,10)]) {

index=parseInt(index,10);

var trigger=(operaTable[index])['onload'];

if (typeof trigger === 'function' && event.data.readyState == 4) {

if (trigger) {

trigger(event.data);

}

}

}

}

}

if (!isDecodeRuleUpdated) {

DECODE_RULE=getDecodeRules(DECODE_RULE);

isDecodeRuleUpdated=true;

}

if (scriptURL) {

if (scriptURL.indexOf('//')==0) {

var protocol=(document.location.protocol=='http:')?'http:':'https:';

scriptURL=protocol+scriptURL;

}

fetchSignatureScript(scriptURL);

}

// video title

var videoTitle=document.title || 'video';

videoTitle=videoTitle.replace(/\s*\-\s*YouTube$/i, '').replace(/'/g, '\'').replace(/^\s+|\s+$/g, '').replace(/\.+$/g, '');

videoTitle=videoTitle.replace(/[:"\?\*]/g, '').replace(/[\|\\\/]/g, '_'); // Mac, Linux, Windows

if (((window.navigator.userAgent || '').toLowerCase()).indexOf('windows') >= 0) {

videoTitle=videoTitle.replace(/#/g, '').replace(/&/g, '_'); // Windows

} else {

videoTitle=videoTitle.replace(/#/g, '%23').replace(/&/g, '%26'); // Mac, Linux

}

// parse the formats map

var sep1='%2C', sep2='%26', sep3='%3D';

if (videoFormats.indexOf(',')>-1) {

sep1=',';

sep2=(videoFormats.indexOf('&')>-1)?'&':'\\u0026';

sep3='=';

}

var videoURL=new Array();

var videoSignature=new Array();

if (videoAdaptFormats) {

videoFormats=videoFormats+sep1+videoAdaptFormats;

}

var videoFormatsGroup=videoFormats.split(sep1);

for (var i=0;i<videoFormatsGroup.length;i++) {

var videoFormatsElem=videoFormatsGroup[i].split(sep2);

var videoFormatsPair=new Array();

for (var j=0;j<videoFormatsElem.length;j++) {

var pair=videoFormatsElem[j].split(sep3);

if (pair.length==2) {

videoFormatsPair[pair[0]]=pair[1];

}

}

if (videoFormatsPair['url']==null) continue;

var url=unescape(unescape(videoFormatsPair['url'])).replace(/\\\//g,'/').replace(/\\u0026/g,'&');

if (videoFormatsPair['itag']==null) continue;

var itag=videoFormatsPair['itag'];

var sig=videoFormatsPair['sig']||videoFormatsPair['signature'];

if (sig) {

url=url+'&signature='+sig;

videoSignature[itag]=null;

} else if (videoFormatsPair['s']) {

url=url+'&signature='+decryptSignature(videoFormatsPair['s']);

videoSignature[itag]=videoFormatsPair['s'];

}

if (url.toLowerCase().indexOf('ratebypass')==-1) { // speed up download for dash

url=url+'&ratebypass=yes';

}

if (url.toLowerCase().indexOf('http')==0) { // validate URL

videoURL[itag]=url+'&title='+videoTitle;

}

}

var showFormat=new Array();

for (var category in FORMAT_RULE) {

var rule=FORMAT_RULE[category];

for (var index in FORMAT_TYPE){

if (FORMAT_TYPE[index]==category) {

showFormat[index]=(rule=='all');

}

}

if (rule=='max') {

for (var i=FORMAT_ORDER.length-1;i>=0;i--) {

var format=FORMAT_ORDER[i];

if (FORMAT_TYPE[format]==category && videoURL[format]!=undefined) {

showFormat[format]=true;

break;

}

}

}

}

var dashPref=getPref(STORAGE_DASH);

if (dashPref=='1') {

SHOW_DASH_FORMATS=true;

} else if (dashPref!='0') {

setPref(STORAGE_DASH,'0');

}

var downloadCodeList=[];

for (var i=0;i<FORMAT_ORDER.length;i++) {

var format=FORMAT_ORDER[i];

if (format=='37' && videoURL[format]==undefined) { // hack for dash 1080p

if (videoURL['137']) {

format='137';

}

showFormat[format]=showFormat['37'];

} else if (format=='38' && videoURL[format]==undefined) { // hack for dash 4K

if (videoURL['138'] && !videoURL['266']) {

format='138';

}

showFormat[format]=showFormat['38'];

}

if (!SHOW_DASH_FORMATS && format.length>2) continue;

if (videoURL[format]!=undefined && FORMAT_LABEL[format]!=undefined && showFormat[format]) {

downloadCodeList.push({url:videoURL[format],sig:videoSignature[format],format:format,label:FORMAT_LABEL[format]});

debug('DYVAM - Info: itag'+format+' url:'+videoURL[format]);

}

}

if (downloadCodeList.length==0) {

debug('DYVAM - Error: No download URL found. Probably YouTube uses encrypted streams.');

return; // no format

}

// find parent container

var newWatchPage=false;

var parentElement=document.getElementById('watch7-action-buttons');

if (parentElement==null) {

parentElement=document.getElementById('watch8-secondary-actions');

if (parentElement==null) {

debug('DYVAM Error - No container for adding the download button. YouTube must have changed the code.');

return;

} else {

newWatchPage=true;

}

}

// get button labels

var buttonText=(BUTTON_TEXT[language])?BUTTON_TEXT[language]:BUTTON_TEXT['en'];

var buttonLabel=(BUTTON_TOOLTIP[language])?BUTTON_TOOLTIP[language]:BUTTON_TOOLTIP['en'];

// generate download code for regular interface

var mainSpan=document.createElement('span');

if (newWatchPage) {

var spanIcon=document.createElement('span');

spanIcon.setAttribute('class', 'yt-uix-button-icon-wrapper');

var imageIcon=document.createElement('img');

imageIcon.setAttribute('src', '//s.ytimg.com/yt/img/pixel-vfl3z5WfW.gif');

imageIcon.setAttribute('class', 'yt-uix-button-icon');

imageIcon.setAttribute('style', 'width:20px;height:20px;background-size:20px 20px;background-repeat:no-repeat;background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAABG0lEQVRYR+2W0Q3CMAxE2wkYAdiEEWADmIxuACMwCmzABpCTEmRSO7YTQX+ChECV43t2nF7GYeHPuLD+0AKwC/DnWMAp/N5qimkBuAfBdRTF/+2/AV6ZYFUxVYuicAfoHegd6B3oHfhZB+ByF+JyV8FkrAB74pqH3DU5L3iGoBURhdVODIQF4EjEkWLmmhYALOQgNIBcHHke4buhxXAAaFnaAhqbQ5QAOHHkwhZ8balkx1ICCiEBWNZ+CivdB7REHIC2ZjZK2oWklDDdB1NSdCd/Js2PqQMpSIKYVcM8kE6QCwDBNRCqOBJrW0CL8kCYxL0A1k6YxWsANAiXeC2ABOEWbwHAWrwxpzgkmA/JtIqnxTOElmPnjlkc4A3FykAhA42AxwAAAABJRU5ErkJggg==);');

spanIcon.appendChild(imageIcon);

mainSpan.appendChild(spanIcon);

}

var spanButton=document.createElement('span');

spanButton.setAttribute('class', 'yt-uix-button-content');

spanButton.appendChild(document.createTextNode(buttonText+' '));

mainSpan.appendChild(spanButton);

if (!newWatchPage) { // old UI

var imgButton=document.createElement('img');

imgButton.setAttribute('class', 'yt-uix-button-arrow');

imgButton.setAttribute('src', '//s.ytimg.com/yt/img/pixel-vfl3z5WfW.gif');

mainSpan.appendChild(imgButton);

}

var listItems=document.createElement('ol');

listItems.setAttribute('style', 'display:none;');

listItems.setAttribute('class', 'yt-uix-button-menu');

for (var i=0;i<downloadCodeList.length;i++) {

var listItem=document.createElement('li');

var listLink=document.createElement('a');

listLink.setAttribute('style', 'text-decoration:none;');

listLink.setAttribute('href', downloadCodeList[i].url);

listLink.setAttribute('download', videoTitle+'.'+FORMAT_TYPE[downloadCodeList[i].format]);

var listButton=document.createElement('span');

listButton.setAttribute('class', 'yt-uix-button-menu-item');

listButton.setAttribute('loop', i+'');

listButton.setAttribute('id', LISTITEM_ID+downloadCodeList[i].format);

listButton.appendChild(document.createTextNode(downloadCodeList[i].label));

listLink.appendChild(listButton);

listItem.appendChild(listLink);

listItems.appendChild(listItem);

}

mainSpan.appendChild(listItems);

var buttonElement=document.createElement('button');

buttonElement.setAttribute('id', BUTTON_ID);

if (newWatchPage) {

buttonElement.setAttribute('class', 'yt-uix-button yt-uix-button-size-default yt-uix-button-opacity yt-uix-tooltip');

} else { // old UI

buttonElement.setAttribute('class', 'yt-uix-button yt-uix-tooltip yt-uix-button-empty yt-uix-button-text');

buttonElement.setAttribute('style', 'margin-top:4px; margin-left:'+((textDirection=='left')?5:10)+'px;');

}

buttonElement.setAttribute('data-tooltip-text', buttonLabel);

buttonElement.setAttribute('type', 'button');

buttonElement.setAttribute('role', 'button');

buttonElement.addEventListener('click', function(){return false;}, false);

buttonElement.appendChild(mainSpan);

var containerSpan=document.createElement('span');

containerSpan.setAttribute('id', CONTAINER_ID);

containerSpan.appendChild(document.createTextNode(' '));

containerSpan.appendChild(buttonElement);

// add the button

if (!newWatchPage) { // watch7

parentElement.appendChild(containerSpan);

} else { // watch8

parentElement.insertBefore(containerSpan, parentElement.firstChild);

}

// REPLACEWITH if (!isSignatureUpdatingStarted) {

for (var i=0;i<downloadCodeList.length;i++) {

addFileSize(downloadCodeList[i].url, downloadCodeList[i].format);

}

// }

if (typeof GM_download !== 'undefined') {

for (var i=0;i<downloadCodeList.length;i++) {

var downloadFMT=document.getElementById(LISTITEM_ID+downloadCodeList[i].format);

var url=(downloadCodeList[i].url).toLowerCase();

if (url.indexOf('clen=')>0 && url.indexOf('dur=')>0 && url.indexOf('gir=')>0

&& url.indexOf('lmt=')>0) {

downloadFMT.addEventListener('click', downloadVideoNatively, false);

}

}

}

addFromManifest('140', '141'); // replace fmt140 with fmt141 if found in manifest

function downloadVideoNatively(e) {

var elem=e.currentTarget;

e.returnValue=false;

if (e.preventDefault) {

e.preventDefault();

}

var loop=elem.getAttribute('loop');

if (loop) {

GM_download(downloadCodeList[loop].url, videoTitle+'.'+FORMAT_TYPE[downloadCodeList[loop].format]);

}

return false;

}

function addFromManifest(oldFormat, newFormat) { // find newFormat URL in manifest

if (videoManifestURL && videoURL[newFormat]==undefined && SHOW_DASH_FORMATS && FORMAT_RULE['m4a']!='none') {

var matchSig=findMatch(videoManifestURL, /\/s\/([a-zA-Z0-9\.]+)\//i);

if (matchSig) {

var decryptedSig=decryptSignature(matchSig);

if (decryptedSig) {

videoManifestURL=videoManifestURL.replace('/s/'+matchSig+'/','/signature/'+decryptedSig+'/');

}

}

if (videoManifestURL.indexOf('//')==0) {

var protocol=(document.location.protocol=='http:')?'http:':'https:';

videoManifestURL=protocol+videoManifestURL;

}

debug('DYVAM - Info: manifestURL '+videoManifestURL);

crossXmlHttpRequest({

method:'GET',

url:videoManifestURL, // check if URL exists

onload:function(response) {

if (response.readyState === 4 && response.status === 200 && response.responseText) {

var regexp = new RegExp('<BaseURL.+>(http[^<]+itag='+newFormat+'[^<]+)<\\/BaseURL>','i');

var matchURL=findMatch(response.responseText, regexp);

debug('DYVAM - Info: matchURL '+matchURL);

if (!matchURL) return;

matchURL=matchURL.replace(/&amp\;/g,'&');

if (FORMAT_RULE['m4a']=='max') {

for (var i=0;i<downloadCodeList.length;i++) {

if (downloadCodeList[i].format==oldFormat) {

downloadCodeList[i].format==newFormat;

var downloadFMT=document.getElementById(LISTITEM_ID+oldFormat);

downloadFMT.setAttribute('id', LISTITEM_ID+newFormat);

downloadFMT.parentNode.setAttribute('href', matchURL);

downloadCodeList[i].url=matchURL;

downloadFMT.firstChild.nodeValue=FORMAT_LABEL[newFormat];

addFileSize(matchURL, newFormat);

}

}

} else if (FORMAT_RULE['m4a']=='all') {

downloadCodeList.push(

{url:matchURL,sig:videoSignature[newFormat],format:newFormat,label:FORMAT_LABEL[newFormat]});

var downloadFMT=document.getElementById(LISTITEM_ID+oldFormat);

var clone=downloadFMT.parentNode.parentNode.cloneNode(true);

clone.firstChild.firstChild.setAttribute('id', LISTITEM_ID+newFormat);

clone.firstChild.setAttribute('href', matchURL);

downloadFMT.parentNode.parentNode.parentNode.appendChild(clone);

downloadFMT=document.getElementById(LISTITEM_ID+newFormat);

downloadFMT.firstChild.nodeValue=FORMAT_LABEL[newFormat];

addFileSize(matchURL, newFormat);

}

}

}

});

}

}

function injectStyle(code) {

var style=document.createElement('style');

style.type='text/css';

style.appendChild(document.createTextNode(code));

document.getElementsByTagName('head')[0].appendChild(style);

}

function injectScript(code) {

var script=document.createElement('script');

script.type='application/javascript';

script.textContent=code;

document.body.appendChild(script);

document.body.removeChild(script);

}

function debug(str) {

var debugElem=document.getElementById(DEBUG_ID);

if (!debugElem) {

debugElem=createHiddenElem('div', DEBUG_ID);

}

debugElem.appendChild(document.createTextNode(str+' '));

}

function createHiddenElem(tag, id) {

var elem=document.createElement(tag);

elem.setAttribute('id', id);

elem.setAttribute('style', 'display:none;');

document.body.appendChild(elem);

return elem;

}

function fixTranslations(language, textDirection) {

if (/^af|bg|bn|ca|cs|de|el|es|et|eu|fa|fi|fil|fr|gl|hi|hr|hu|id|it|iw|kn|lv|lt|ml|mr|ms|nl|pl|ro|ru|sl|sk|sr|sw|ta|te|th|uk|ur|vi|zu$/.test(language)) { // fix international UI

var likeButton=document.getElementById('watch-like');

if (likeButton) {

var spanElements=likeButton.getElementsByClassName('yt-uix-button-content');

if (spanElements) {

spanElements[0].style.display='none'; // hide like text

}

}

var marginPixels=10;

if (/^bg|ca|cs|el|eu|hr|it|ml|ms|pl|sl|sw|te$/.test(language)) {

marginPixels=1;

}

injectStyle('#watch7-secondary-actions .yt-uix-button{margin-'+textDirection+':'+marginPixels+'px!important}');

}

}

function findMatch(text, regexp) {

var matches=text.match(regexp);

return (matches)?matches[1]:null;

}

function isString(s) {

return (typeof s==='string' || s instanceof String);

}

function isInteger(n) {

return (typeof n==='number' && n%1==0);

}

function getPref(name) { // cross-browser GM_getValue

var a='', b='';

try {a=typeof GM_getValue.toString; b=GM_getValue.toString()} catch(e){}

if (typeof GM_getValue === 'function' &&

(a === 'undefined' || b.indexOf('not supported') === -1)) {

return GM_getValue(name, null); // Greasemonkey, Tampermonkey, Firefox extension

} else {

var ls=null;

try {ls=window.localStorage||null} catch(e){}

if (ls) {

return ls.getItem(name); // Chrome script, Opera extensions

}

}

return;

}

function setPref(name, value) { // cross-browser GM_setValue

var a='', b='';

try {a=typeof GM_setValue.toString; b=GM_setValue.toString()} catch(e){}

if (typeof GM_setValue === 'function' &&

(a === 'undefined' || b.indexOf('not supported') === -1)) {

GM_setValue(name, value); // Greasemonkey, Tampermonkey, Firefox extension

} else {

var ls=null;

try {ls=window.localStorage||null} catch(e){}

if (ls) {

return ls.setItem(name, value); // Chrome script, Opera extensions

}

}

}

function crossXmlHttpRequest(details) { // cross-browser GM_xmlhttpRequest

if (typeof GM_xmlhttpRequest === 'function') { // Greasemonkey, Tampermonkey, Firefox extension, Chrome script

GM_xmlhttpRequest(details);

} else if (typeof window.opera !== 'undefined' && window.opera && typeof opera.extension !== 'undefined' &&

typeof opera.extension.postMessage !== 'undefined') { // Opera 12 extension

var index=operaTable.length;

opera.extension.postMessage({'action':'xhr-'+index, 'url':details.url, 'method':details.method});

operaTable[index]=details;

} else if (typeof window.opera === 'undefined' && typeof XMLHttpRequest === 'function') { // Opera 15+ extension

var xhr=new XMLHttpRequest();

xhr.onreadystatechange = function() {

if (xhr.readyState == 4) {

if (details['onload']) {

details['onload'](xhr);

}

}

}

xhr.open(details.method, details.url, true);

xhr.send();

}

}

function addFileSize(url, format) {

function updateVideoLabel(size, format) {

var elem=document.getElementById(LISTITEM_ID+format);

if (elem) {

size=parseInt(size,10);

if (size>=1073741824) {

size=parseFloat((size/1073741824).toFixed(1))+' GB';

} else if (size>=1048576) {

size=parseFloat((size/1048576).toFixed(1))+' MB';

} else {

size=parseFloat((size/1024).toFixed(1))+' KB';

}

if (elem.childNodes.length>1) {

elem.lastChild.nodeValue=' ('+size+')';

} else if (elem.childNodes.length==1) {

elem.appendChild(document.createTextNode(' ('+size+')'));

}

}

}

var matchSize=findMatch(url, /[&\?]clen=([0-9]+)&/i);

if (matchSize) {

updateVideoLabel(matchSize, format);

} else {

try {

crossXmlHttpRequest({

method:'HEAD',

url:url,

onload:function(response) {

if (response.readyState == 4 && response.status == 200) { // add size

var size=0;

if (typeof response.getResponseHeader === 'function') {

size=response.getResponseHeader('Content-length');

} else if (response.responseHeaders) {

var regexp = new RegExp('^Content\-length: (.*)$','im');

var match = regexp.exec(response.responseHeaders);

if (match) {

size=match[1];

}

}

if (size) {

updateVideoLabel(size, format);

}

}

}

});

} catch(e) { }

}

}

function findSignatureCode(sourceCode) {

debug('DYVAM - Info: signature start '+getPref(STORAGE_CODE));

var signatureFunctionName =

findMatch(sourceCode,

/\.set\s*\("signature"\s*,\s*([a-zA-Z0-9_$][\w$]*)\(/)

|| findMatch(sourceCode,

/\.sig\s*\|\|\s*([a-zA-Z0-9_$][\w$]*)\(/)

|| findMatch(sourceCode,

/\.signature\s*=\s*([a-zA-Z_$][\w$]*)\([a-zA-Z_$][\w$]*\)/); //old

if (signatureFunctionName == null) return setPref(STORAGE_CODE, 'error');

signatureFunctionName=signatureFunctionName.replace('$','\\$');

var regCode = new RegExp(signatureFunctionName + '\\s*=\\s*function' +

'\\s*\\([\\w$]*\\)\\s*{[\\w$]*=[\\w$]*\\.split\\(""\\);\n*(.+);return [\\w$]*\\.join');

var regCode2 = new RegExp('function \\s*' + signatureFunctionName +

'\\s*\\([\\w$]*\\)\\s*{[\\w$]*=[\\w$]*\\.split\\(""\\);\n*(.+);return [\\w$]*\\.join');

var functionCode = findMatch(sourceCode, regCode) || findMatch(sourceCode, regCode2);

debug('DYVAM - Info: signaturefunction ' + signatureFunctionName + ' -- ' + functionCode);

if (functionCode == null) return setPref(STORAGE_CODE, 'error');

var reverseFunctionName = findMatch(sourceCode,

/([\w$]*)\s*:\s*function\s*\(\s*[\w$]*\s*\)\s*{\s*(?:return\s*)?[\w$]*\.reverse\s*\(\s*\)\s*}/);

debug('DYVAM - Info: reversefunction ' + reverseFunctionName);

if (reverseFunctionName) reverseFunctionName=reverseFunctionName.replace('$','\\$');

var sliceFunctionName = findMatch(sourceCode,

/([\w$]*)\s*:\s*function\s*\(\s*[\w$]*\s*,\s*[\w$]*\s*\)\s*{\s*(?:return\s*)?[\w$]*\.(?:slice|splice)\(.+\)\s*}/);

debug('DYVAM - Info: slicefunction ' + sliceFunctionName);

if (sliceFunctionName) sliceFunctionName=sliceFunctionName.replace('$','\\$');

var regSlice = new RegExp('\\.(?:'+'slice'+(sliceFunctionName?'|'+sliceFunctionName:'')+

')\\s*\\(\\s*(?:[a-zA-Z_$][\\w$]*\\s*,)?\\s*([0-9]+)\\s*\\)'); // .slice(5) sau .Hf(a,5)

var regReverse = new RegExp('\\.(?:'+'reverse'+(reverseFunctionName?'|'+reverseFunctionName:'')+

')\\s*\\([^\\)]*\\)'); // .reverse() sau .Gf(a,45)

var regSwap = new RegExp('[\\w$]+\\s*\\(\\s*[\\w$]+\\s*,\\s*([0-9]+)\\s*\\)');

var regInline = new RegExp('[\\w$]+\\[0\\]\\s*=\\s*[\\w$]+\\[([0-9]+)\\s*%\\s*[\\w$]+\\.length\\]');

var functionCodePieces=functionCode.split(';');

var decodeArray=[];

for (var i=0; i<functionCodePieces.length; i++) {

functionCodePieces[i]=functionCodePieces[i].trim();

var codeLine=functionCodePieces[i];

if (codeLine.length>0) {

var arrSlice=codeLine.match(regSlice);

var arrReverse=codeLine.match(regReverse);

debug(i+': '+codeLine+' --'+(arrSlice?' slice length '+arrSlice.length:'') +' '+(arrReverse?'reverse':''));

if (arrSlice && arrSlice.length >= 2) { // slice

var slice=parseInt(arrSlice[1], 10);

if (isInteger(slice)){

decodeArray.push(-slice);

} else return setPref(STORAGE_CODE, 'error');

} else if (arrReverse && arrReverse.length >= 1) { // reverse

decodeArray.push(0);

} else if (codeLine.indexOf('[0]') >= 0) { // inline swap

if (i+2<functionCodePieces.length &&

functionCodePieces[i+1].indexOf('.length') >= 0 &&

functionCodePieces[i+1].indexOf('[0]') >= 0) {

var inline=findMatch(functionCodePieces[i+1], regInline);

inline=parseInt(inline, 10);

decodeArray.push(inline);

i+=2;

} else return setPref(STORAGE_CODE, 'error');

} else if (codeLine.indexOf(',') >= 0) { // swap

var swap=findMatch(codeLine, regSwap);

swap=parseInt(swap, 10);

if (isInteger(swap) && swap>0){

decodeArray.push(swap);

} else return setPref(STORAGE_CODE, 'error');

} else return setPref(STORAGE_CODE, 'error');

}

}

if (decodeArray) {

setPref(STORAGE_URL, scriptURL);

setPref(STORAGE_CODE, decodeArray.toString());

DECODE_RULE=decodeArray;

debug('DYVAM - Info: signature '+decodeArray.toString()+' '+scriptURL);

// update download links and add file sizes

for (var i=0;i<downloadCodeList.length;i++) {

var elem=document.getElementById(LISTITEM_ID+downloadCodeList[i].format);

var url=downloadCodeList[i].url;

var sig=downloadCodeList[i].sig;

if (elem && url && sig) {

url=url.replace(/\&signature=[\w\.]+/, '&signature='+decryptSignature(sig));

elem.parentNode.setAttribute('href', url);

addFileSize(url, downloadCodeList[i].format);

}

}

}

}

function isValidSignatureCode(arr) { // valid values: '5,-3,0,2,5', 'error'

if (!arr) return false;

if (arr=='error') return true;

arr=arr.split(',');

for (var i=0;i<arr.length;i++) {

if (!isInteger(parseInt(arr[i],10))) return false;

}

return true;

}

function fetchSignatureScript(scriptURL) {

var storageURL=getPref(STORAGE_URL);

var storageCode=getPref(STORAGE_CODE);

if (!(/,0,|^0,|,0$|\-/.test(storageCode))) storageCode=null; // hack for only positive items

if (storageCode && isValidSignatureCode(storageCode) && storageURL &&

scriptURL.replace(/^https?/i,'')==storageURL.replace(/^https?/i,'')) return;

try {

debug('DYVAM fetch '+scriptURL);

isSignatureUpdatingStarted=true;

crossXmlHttpRequest({

method:'GET',

url:scriptURL,

onload:function(response) {

debug('DYVAM fetch status '+response.status);

if (response.readyState === 4 && response.status === 200 && response.responseText) {

findSignatureCode(response.responseText);

}

}

});

} catch(e) { }

}

function getDecodeRules(rules) {

var storageCode=getPref(STORAGE_CODE);

if (storageCode && storageCode!='error' && isValidSignatureCode(storageCode)) {

var arr=storageCode.split(',');

for (var i=0; i<arr.length; i++) {

arr[i]=parseInt(arr[i], 10);

}

rules=arr;

debug('DYVAM - Info: signature '+arr.toString()+' '+scriptURL);

}

return rules;

}

function decryptSignature(sig) {

function swap(a,b){var c=a[0];a[0]=a[b%a.length];a[b]=c;return a};

function decode(sig, arr) { // encoded decryption

if (!isString(sig)) return null;

var sigA=sig.split('');

for (var i=0;i<arr.length;i++) {

var act=arr[i];

if (!isInteger(act)) return null;

sigA=(act>0)?swap(sigA, act):((act==0)?sigA.reverse():sigA.slice(-act));

}

var result=sigA.join('');

return result;

}

if (sig==null) return '';

var arr=DECODE_RULE;

if (arr) {

var sig2=decode(sig, arr);

if (sig2) return sig2;

} else {

setPref(STORAGE_URL, '');

setPref(STORAGE_CODE, '');

}

return sig;

}

}

})();