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Youtube Downloader
(function () {
var FORMAT_LABEL={'5':'FLV 240p','18':'MP4 360p','22':'MP4 720p','34':'FLV 360p','35':'FLV 480p','37':'MP4 1080p','38':'MP4 4K','43':'WebM 360p','44':'WebM 480p','45':'WebM 720p','46':'WebM 1080p','135':'MP4 480p - no audio','137':'MP4 1080p - no audio','138':'MP4 4K - no audio','139':'M4A 48kbps - audio','140':'M4A 128kbps - audio','141':'M4A 256kbps - audio','264':'MP4 1080p - 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'};
var FORMAT_ORDER=['5','18','34','43','35','135','44','22','45','37','46','38','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','id':'Unduh','it':'Scarica','ja':'ダウンロード','pl':'Pobierz','pt':'Baixar','ro':'Descărcați','ru':'Скачать','tr':'İndir','zh':'下载'};
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','id':'Unduh video ini','it':'Scarica questo video','ja':'このビデオをダウンロードする','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'};
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 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 content=document.getElementById('content');
if (isAjax && content) { // Ajax UI
var mo=window.MutationObserver||window.MozMutationObserver||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') { // 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') { // 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, 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';
}
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'];
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 ('document.getElementById("'+DEBUG_ID+'2").appendChild(document.createTextNode(\'"video_id":"\'+ytplayer.config.args.video_id+\'", "js":"\'+ytplayer.config.assets.js+\'", "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');
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*\"([^\"]+)\"/);
if (scriptURL==null) {
scriptURL=findMatch(bodyContent, /\"js\":\s*\"([^\"]+)\"/);
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) {
scriptURL='http:'+scriptURL;
}
fetchSignatureScript(scriptURL);
}
// video title
var videoTitle=document.title || 'video';
videoTitle=videoTitle.replace(/\s*\-\s*YouTube$/i,'').replace(/[#"\?:\*]/g,'').replace(/[&\|\\\/]/g,'_').replace(/'/g,'\'').replace(/^\s+|\s+$/g,'').replace(/\.+$/g,'');
// 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 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['264']) { // high-bitrate 1080p
format='264';
} else if (videoURL['137']) {
format='137';
}
showFormat[format]=showFormat['37'];
} else if (format=='38' && videoURL[format]==undefined) { // hack for dash 4K
if (videoURL['138']) {
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 parentElement=document.getElementById('watch7-action-buttons');
if (parentElement==null) {
debug('DYVAM - No container for adding the download button. YouTube must have changed the code.');
return;
}
// 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');
var spanButton=document.createElement('span');
spanButton.setAttribute('class', 'yt-uix-button-content');
spanButton.appendChild(document.createTextNode(buttonText+' '));
mainSpan.appendChild(spanButton);
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 listSpan=document.createElement('span');
listSpan.setAttribute('class', 'yt-uix-button-menu-item');
listSpan.setAttribute('loop', i+'');
listSpan.setAttribute('id', LISTITEM_ID+downloadCodeList[i].format);
listSpan.appendChild(document.createTextNode(downloadCodeList[i].label));
listLink.appendChild(listSpan);
listItem.appendChild(listLink);
listItems.appendChild(listItem);
if (!isSignatureUpdatingStarted) {
checkURL(downloadCodeList[i].url, downloadCodeList[i].format);
}
}
mainSpan.appendChild(listItems);
var buttonElement=document.createElement('button');
buttonElement.setAttribute('id', BUTTON_ID);
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);
// add the button
var containerSpan=document.createElement('span');
containerSpan.setAttribute('id', CONTAINER_ID);
containerSpan.appendChild(document.createTextNode(' '));
containerSpan.appendChild(buttonElement);
parentElement.appendChild(containerSpan);
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|pt|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|es|eu|fr|hr|it|ml|ms|pl|ro|ru|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
if (typeof GM_getValue === 'function' &&
(typeof GM_getValue.toString === 'undefined' || GM_getValue.toString().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
if (typeof GM_setValue === 'function' &&
(typeof GM_setValue.toString === 'undefined' || GM_setValue.toString().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 checkURL(url, format) {
try {
crossXmlHttpRequest({
method:'HEAD',
url:url,
onload:function(response) {
if (response.readyState == 4 && response.status >= 400) { // remove format
videoURL[format]=undefined;
var elem=document.getElementById(LISTITEM_ID+format);
if (elem && elem.parentElement && elem.parentElement.parentElement) {
var grandParent=elem.parentElement.parentElement;
grandParent.parentNode.removeChild(grandParent);
}
} else if (response.readyState == 4 && response.status == 200) { // add size
var size;
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) {
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';
}
var elem=document.getElementById(LISTITEM_ID+format);
if (elem) {
var sizeElement=document.createElement('SPAN');
sizeElement.setAttribute('style', 'font-size:84%;');
var text=document.createTextNode(' ('+size+')');
sizeElement.appendChild(text);
elem.appendChild(sizeElement);
}
}
}
}
});
} catch(e) { }
}
function findSignatureCode(sourceCode) {
var functionName=findMatch(sourceCode, /\.signature\s*=\s*(\w+)\(\w+\)/);
if (functionName==null) return setPref(STORAGE_CODE, 'error');
var regCode=new RegExp('function '+functionName+
'\\s*\\(\\w+\\)\\s*{\\w+=\\w+\\.split\\(""\\);(.+);return \\w+\\.join');
var functionCode=findMatch(sourceCode, regCode);
if (functionCode==null) return setPref(STORAGE_CODE, 'error');
var regSlice=new RegExp('slice\\s*\\(\\s*(.+)\\s*\\)');
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=[], signatureLength=81;
for (var i=0; i<functionCodePieces.length; i++) {
functionCodePieces[i]=functionCodePieces[i].trim();
if (functionCodePieces[i].length==0) {
} else if (functionCodePieces[i].indexOf('slice') >= 0) { // slice
var slice=findMatch(functionCodePieces[i], regSlice);
slice=parseInt(slice, 10);
if (isInteger(slice)){
decodeArray.push(-slice);
signatureLength+=slice;
} else return setPref(STORAGE_CODE, 'error');
} else if (functionCodePieces[i].indexOf('reverse') >= 0) {
decodeArray.push(0);
} else if (functionCodePieces[i].indexOf('[0]') >= 0) {
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 (functionCodePieces[i].indexOf(',') >= 0) {
var swap=findMatch(functionCodePieces[i], regSwap);
swap=parseInt(swap, 10);
if (isInteger(swap)){
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[signatureLength]=decodeArray;
// update download links
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);
}
}
}
}
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 (storageCode && isValidSignatureCode(storageCode) && storageURL &&
scriptURL.replace(/^https?/i,'')==storageURL.replace(/^https?/i,'')) return;
try {
isSignatureUpdatingStarted=true;
crossXmlHttpRequest({
method:'GET',
url:scriptURL,
onload:function(response) {
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(',');
var signatureLength=81;
for (var i=0; i<arr.length; i++) {
arr[i]=parseInt(arr[i], 10);
if (arr[i]<0) signatureLength-=arr[i];
}
rules[signatureLength]=arr;
}
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.length==81)?result:sig;
}
if (sig==null) return '';
var arr=DECODE_RULE[sig.length];
if (arr) {
var sig2=decode(sig, arr);
if (sig2 && sig2.length==81) return sig2;
}
return sig;
}
}
})();
{
"name": "Youtube Downloader",
"description": "Insert Youtube download button below the player",
"icon": "https://lh4.googleusercontent.com/-4QDxins1Vgw/AAAAAAAAAAI/AAAAAAAAUC8/C_1z_NV7ldE/s120-c/photo.jpg",
"link": "http://www.clonez.me"
}
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