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YouTube Links

Download YouTube videos. Video formats are listed at the top of the watch page. Video links are tagged so that they can be downloaded easily.

目前為 2021-02-01 提交的版本，檢視 最新版本。

  1. // ==UserScript==
  2. // @name           YouTube Links
  3. // @namespace      http://www.smallapple.net/labs/YouTubeLinks/
  4. // @description    Download YouTube videos. Video formats are listed at the top of the watch page. Video links are tagged so that they can be downloaded easily.
  5. // @author         Ng Hun Yang
  6. // @include        http://*.youtube.com/*
  7. // @include        http://youtube.com/*
  8. // @include        https://*.youtube.com/*
  9. // @include        https://youtube.com/*
  10. // @match          *://*.youtube.com/*
  11. // @match          *://*.googlevideo.com/*
  12. // @match          *://s.ytimg.com/yts/jsbin/*
  13. // @grant          GM_xmlhttpRequest
  14. // @grant          GM.xmlHttpRequest
  15. // @connect        googlevideo.com
  16. // @connect        s.ytimg.com
  17. // @version        2.41
  18. // ==/UserScript==
  19.  
  20. /* This is based on YouTube HD Suite 3.4.1 */
  21.  
  22. /* Tested on Firefox 5.0, Chrome 13 and Opera 11.50 */
  23.  
  24. (function() {
  25.  
  26. // =============================================================================
  27.  
  28. var win = typeof(unsafeWindow) !== "undefined" ? unsafeWindow : window;
  29. var doc = win.document;
  30. var loc = win.location;
  31.  
  32. if(win.top != win.self)
  33.   return;
  34.  
  35. var unsafeWin = win;
  36.  
  37. // Hack to get unsafe window in Chrome
  38. (function() {
  39.  
  40. var isChrome = navigator.userAgent.toLowerCase().indexOf("chrome") >= 0;
  41.  
  42. if(!isChrome)
  43.   return;
  44.  
  45. // Chrome 27 fixed this exploit, but luckily, its unsafeWin now works for us
  46. try {
  47.   var div = doc.createElement("div");
  48.   div.setAttribute("onclick", "return window;");
  49.   unsafeWin = div.onclick();
  50. } catch(e) {
  51.   }
  52.  
  53. }) ();
  54.  
  55. var ua = navigator.userAgent || "";
  56. var isEdgeBrowser = ua.match(/ Edge\//);
  57.  
  58. // =============================================================================
  59.  
  60. if(typeof GM == "object" && GM.xmlHttpRequest && typeof GM_xmlhttpRequest == "undefined") {
  61.   GM_xmlhttpRequest = async function(opts) {
  62.     await GM.xmlHttpRequest(opts);
  63.     }
  64.   }
  65.  
  66. // =============================================================================
  67.  
  68. var SCRIPT_NAME = "YouTube Links";
  69.  
  70. var relInfo = {
  71.   ver: 24100,
  72.   ts: 2020113000,
  73.   desc: "Fixed overly aggressive regexp"
  74.   };
  75.  
  76. var SCRIPT_UPDATE_LINK = loc.protocol + "//greasyfork.org/scripts/5565-youtube-links-updater/code/YouTube Links Updater.user.js";
  77. var SCRIPT_LINK = loc.protocol + "//greasyfork.org/scripts/5566-youtube-links/code/YouTube Links.user.js";
  78.  
  79. // =============================================================================
  80.  
  81. var dom = {};
  82.  
  83. dom.gE = function(id) {
  84.   return doc.getElementById(id);
  85.   };
  86.  
  87. dom.gT = function(dom, tag) {
  88.   if(arguments.length == 1) {
  89.     tag = dom;
  90.     dom = doc;
  91.     }
  92.  
  93.   return dom.getElementsByTagName(tag);
  94.   };
  95.  
  96. dom.cE = function(tag) {
  97.   return document.createElement(tag);
  98.   };
  99.  
  100. dom.cT = function(s) {
  101.   return doc.createTextNode(s);
  102.   };
  103.  
  104. dom.attr = function(obj, k, v) {
  105.   if(arguments.length == 2)
  106.     return obj.getAttribute(k);
  107.  
  108.   obj.setAttribute(k, v);
  109.   };
  110.  
  111. dom.prepend = function(obj, child) {
  112.   obj.insertBefore(child, obj.firstChild);
  113.   };
  114.  
  115. dom.append = function(obj, child) {
  116.   obj.appendChild(child);
  117.   };
  118.  
  119. dom.offset = function(obj) {
  120.   var x = 0;
  121.   var y = 0;
  122.  
  123.   if(obj.getBoundingClientRect) {
  124.     var box = obj.getBoundingClientRect();
  125.     var owner = obj.ownerDocument;
  126.  
  127.     x = box.left + Math.max(owner.documentElement.scrollLeft, owner.body.scrollLeft) - owner.documentElement.clientLeft;
  128.     y = box.top + Math.max(owner.documentElement.scrollTop, owner.body.scrollTop) - owner.documentElement.clientTop;
  129.  
  130.     return { left: x, top: y };
  131.     }
  132.  
  133.   if(obj.offsetParent) {
  134.     do {
  135.       x += obj.offsetLeft - obj.scrollLeft;
  136.       y += obj.offsetTop - obj.scrollTop;
  137.       obj = obj.offsetParent;
  138.     } while(obj);
  139.     }
  140.  
  141.   return { left: x, top: y };
  142.   };
  143.  
  144. dom.inViewport = function(el) {
  145.   var rect = el.getBoundingClientRect();
  146.  
  147.   if(rect.width == 0 && rect.height == 0)
  148.     return false;
  149.  
  150.   return rect.bottom >= 0 &&
  151.    rect.right >= 0 &&
  152.    rect.top < (win.innerHeight || doc.documentElement.clientHeight) &&
  153.    rect.left < (win.innerWidth || doc.documentElement.clientWidth);
  154.   };
  155.  
  156. dom.html = function(obj, s) {
  157.   if(arguments.length == 1)
  158.     return obj.innerHTML;
  159.  
  160.   obj.innerHTML = s;
  161.   };
  162.  
  163. dom.emitHtml = function(tag, attrs, body) {
  164.   if(arguments.length == 2) {
  165.     if(typeof(attrs) == "string") {
  166.       body = attrs;
  167.       attrs = {};
  168.       }
  169.     }
  170.  
  171.   var list = [];
  172.  
  173.   for(var k in attrs) {
  174.     if(attrs[k] != null)
  175.       list.push(k + "='" + attrs[k].replace(/'/g, "&#39;") + "'");
  176.     }
  177.  
  178.   var s = "<" + tag + " " + list.join(" ") + ">";
  179.  
  180.   if(body != null)
  181.     s += body + "</" + tag + ">";
  182.  
  183.   return s;
  184.   };
  185.  
  186. dom.emitCssStyles = function(styles) {
  187.   var list = [];
  188.  
  189.   for(var k in styles) {
  190.     list.push(k + ": " + styles[k] + ";");
  191.     }
  192.  
  193.   return " { " + list.join(" ") + " }";
  194.   };
  195.  
  196. dom.ajax = function(opts) {
  197.   function newXhr() {
  198.     if(window.ActiveXObject) {
  199.       try {
  200.         return new ActiveXObject("Msxml2.XMLHTTP");
  201.         } catch(e) {
  202.           }
  203.  
  204.       try {
  205.         return new ActiveXObject("Microsoft.XMLHTTP");
  206.         } catch(e) {
  207.           return null;
  208.           }
  209.       }
  210.  
  211.     if(window.XMLHttpRequest)
  212.       return new XMLHttpRequest();
  213.  
  214.     return null;
  215.     }
  216.  
  217.   function nop() {
  218.     }
  219.  
  220.   // Entry point
  221.   var xhr = newXhr();
  222.  
  223.   opts = addProp({
  224.     type: "GET",
  225.     async: true,
  226.     success: nop,
  227.     error: nop,
  228.     complete: nop
  229.     }, opts);
  230.  
  231.   xhr.open(opts.type, opts.url, opts.async);
  232.  
  233.   xhr.onreadystatechange = function() {
  234.     if(xhr.readyState == 4) {
  235.       var status = +xhr.status;
  236.  
  237.       if(status >= 200 && status < 300) {
  238.         opts.success(xhr.responseText, "success", xhr);
  239.         }
  240.       else {
  241.         opts.error(xhr, "error");
  242.         }
  243.  
  244.       opts.complete(xhr);
  245.       }
  246.     };
  247.  
  248.   xhr.send("");
  249.   };
  250.  
  251. dom.crossAjax = function(opts) {
  252.   function wrapXhr(xhr) {
  253.     var headers = xhr.responseHeaders.replace("\r", "").split("\n");
  254.  
  255.     var obj = {};
  256.  
  257.     forEach(headers, function(idx, elm) {
  258.       var nv = elm.split(":");
  259.       if(nv[1] != null)
  260.         obj[nv[0].toLowerCase()] = nv[1].replace(/^\s+/, "").replace(/\s+$/, "");
  261.       });
  262.  
  263.     var responseXML = null;
  264.  
  265.     if(opts.dataType == "xml")
  266.       responseXML = new DOMParser().parseFromString(xhr.responseText, "text/xml");
  267.  
  268.     return {
  269.       responseText: xhr.responseText,
  270.       responseXML: responseXML,
  271.       status: xhr.status,
  272.  
  273.       getAllResponseHeaders: function() {
  274.         return xhr.responseHeaders;
  275.         },
  276.  
  277.       getResponseHeader: function(name) {
  278.         return obj[name.toLowerCase()];
  279.         }
  280.       };
  281.     }
  282.  
  283.   function nop() {
  284.     }
  285.  
  286.   // Entry point
  287.   opts = addProp({
  288.     type: "GET",
  289.     async: true,
  290.     success: nop,
  291.     error: nop,
  292.     complete: nop
  293.     }, opts);
  294.  
  295.   if(typeof GM_xmlhttpRequest === "undefined") {
  296.     setTimeout(function() {
  297.       var xhr = {};
  298.       opts.error(xhr, "error");
  299.       opts.complete(xhr);
  300.       }, 0);
  301.     return;
  302.     }
  303.  
  304.   // TamperMonkey does not handle URLs starting with //
  305.   var url;
  306.  
  307.   if(opts.url.match(/^\/\//))
  308.     url = loc.protocol + opts.url;
  309.   else
  310.     url = opts.url;
  311.  
  312.   GM_xmlhttpRequest({
  313.     method: opts.type,
  314.     url: url,
  315.     synchronous: !opts.async,
  316.  
  317.     onload: function(xhr) {
  318.       xhr = wrapXhr(xhr);
  319.  
  320.       if(xhr.status >= 200 && xhr.status < 300)
  321.         opts.success(xhr.responseXML || xhr.responseText, "success", xhr);
  322.       else
  323.         opts.error(xhr, "error");
  324.  
  325.       opts.complete(xhr);
  326.       },
  327.  
  328.     onerror: function(xhr) {
  329.       xhr = wrapXhr(xhr);
  330.       opts.error(xhr, "error");
  331.       opts.complete(xhr);
  332.       }
  333.     });
  334.   };
  335.  
  336. dom.addEvent = function(e, type, fn) {
  337.   function mouseEvent(evt) {
  338.     if(this != evt.relatedTarget && !dom.isAChildOf(this, evt.relatedTarget))
  339.       fn.call(this, evt);
  340.     }
  341.  
  342.   // Entry point
  343.   if(e.addEventListener) {
  344.     var effFn = fn;
  345.  
  346.     if(type == "mouseenter") {
  347.       type = "mouseover";
  348.       effFn = mouseEvent;
  349.       }
  350.     else if(type == "mouseleave") {
  351.       type = "mouseout";
  352.       effFn = mouseEvent;
  353.       }
  354.  
  355.     e.addEventListener(type, effFn, /*capturePhase*/ false);
  356.     }
  357.   else
  358.     e.attachEvent("on" + type, function() { fn(win.event); });
  359.   };
  360.  
  361. dom.insertCss = function (styles) {
  362.   var ss = dom.cE("style");
  363.   dom.attr(ss, "type", "text/css");
  364.  
  365.   var hh = dom.gT("head") [0];
  366.   dom.append(hh, ss);
  367.   dom.append(ss, dom.cT(styles));
  368.   };
  369.  
  370. dom.isAChildOf = function(parent, child) {
  371.   if(parent === child)
  372.     return false;
  373.  
  374.   while(child && child !== parent) {
  375.     child = child.parentNode;
  376.     }
  377.  
  378.   return child === parent;
  379.   };
  380.  
  381. // -----------------------------------------------------------------------------
  382.  
  383. function timeNowInSec() {
  384.   return Math.round(+new Date() / 1000);
  385.   }
  386.  
  387. function forLoop(opts, fn) {
  388.   opts = addProp({ start: 0, inc: 1 }, opts);
  389.  
  390.   for(var idx = opts.start; idx < opts.num; idx += opts.inc) {
  391.     if(fn.call(opts, idx, opts) === false)
  392.       break;
  393.     }
  394.   }
  395.  
  396. function forEach(list, fn) {
  397.   forLoop({ num: list.length }, function(idx) {
  398.     return fn.call(list[idx], idx, list[idx]);
  399.     });
  400.   }
  401.  
  402. function addProp(dest, src) {
  403.   for(var k in src) {
  404.     if(src[k] != null)
  405.       dest[k] = src[k];
  406.     }
  407.  
  408.   return dest;
  409.   }
  410.  
  411. function inArray(elm, array) {
  412.   for(var i = 0; i < array.length; ++i) {
  413.     if(array[i] === elm)
  414.       return i;
  415.     }
  416.  
  417.   return -1;
  418.   }
  419.  
  420. function unescHtmlEntities(s) {
  421.   return s.replace(/&lt;/g, "<").replace(/&gt;/g, ">").replace(/&amp;/g, "&").replace(/&quot;/g, '"').replace(/&#39;/g, "'");
  422.   }
  423.  
  424. function logMsg(s) {
  425.   win.console.log(s);
  426.   }
  427.  
  428. function cnvSafeFname(s) {
  429.   return s.replace(/:/g, "-").replace(/"/g, "'").replace(/[\\/|*?]/g, "_");
  430.   }
  431.  
  432. function encodeSafeFname(s) {
  433.   return encodeURIComponent(cnvSafeFname(s)).replace(/'/g, "%27");
  434.   }
  435.  
  436. function getVideoName(s) {
  437.   var list = [
  438.     { name: "3GP", codec: "video\\/3gpp" },
  439.     { name: "FLV", codec: "video\\/x-flv" },
  440.     { name: "M4V", codec: "video\\/x-m4v" },
  441.     { name: "MP3", codec: "audio\\/mpeg" },
  442.     { name: "MP4", codec: "video\\/mp4" },
  443.     { name: "M4A", codec: "audio\\/mp4" },
  444.     { name: "QT", codec: "video\\/quicktime" },
  445.     { name: "WEBM", codec: "audio\\/webm" },
  446.     { name: "WEBM", codec: "video\\/webm" },
  447.     { name: "WMV", codec: "video\\/ms-wmv" }
  448.     ];
  449.  
  450.   var spCodecs = {
  451.     "av01": "AV1",
  452.     "opus": "OPUS",
  453.     "vorbis": "VOR",
  454.     "vp9": "VP9"
  455.     };
  456.  
  457.   if(s.match(/;\s*\+?codecs=\"([a-zA-Z0-9]+)/)) {
  458.     var str = RegExp.$1;
  459.     if(spCodecs[str])
  460.       return spCodecs[str];
  461.     }
  462.  
  463.   var name = "?";
  464.  
  465.   forEach(list, function(idx, elm) {
  466.     if(s.match("^" + elm.codec)) {
  467.       name = elm.name;
  468.       return false;
  469.       }
  470.     });
  471.  
  472.   return name;
  473.   }
  474.  
  475. function getAspectRatio(wd, ht) {
  476.   return Math.round(wd / ht * 100) / 100;
  477.   }
  478.  
  479. function cnvResName(res) {
  480.   var resMap = {
  481.     "audio": "Audio"
  482.     };
  483.  
  484.   if(resMap[res])
  485.     return resMap[res];
  486.  
  487.   if(!res.match(/^(\d+)x(\d+)/))
  488.     return res;
  489.  
  490.   var wd = +RegExp.$1;
  491.   var ht = +RegExp.$2;
  492.  
  493.   if(wd < ht) {
  494.     var t = wd;
  495.     wd = ht;
  496.     ht = t;
  497.     }
  498.  
  499.   var horzResAr = [
  500.     [ 16000, "16K" ],
  501.     [ 14000, "14K" ],
  502.     [ 12000, "12K" ],
  503.     [ 10000, "10K" ],
  504.     [ 8000, "8K" ],
  505.     [ 6000, "6K" ],
  506.     [ 5000, "5K" ],
  507.     [ 4000, "4K" ],
  508.     [ 3000, "3K" ],
  509.     [ 2048, "2K" ]
  510.     ];
  511.  
  512.   var vertResAr = [
  513.     [ 4320, "8K" ],
  514.     [ 3160, "6K" ],
  515.     [ 2880, "5K" ],
  516.     [ 2160, "4K" ],
  517.     [ 1728, "3K" ],
  518.     [ 1536, "2K" ],
  519.     [ 240, "240v" ],
  520.     [ 144, "144v" ]
  521.     ];
  522.  
  523.   var aspectRatio = getAspectRatio(wd, ht);
  524.   var name;
  525.  
  526.   do {
  527.     forEach(horzResAr, function(idx, elm) {
  528.       var tolerance = elm[0] * 0.05;
  529.       if(wd >= elm[0] * 0.95) {
  530.         name = elm[1];
  531.         return false;
  532.         }
  533.       });
  534.  
  535.     if(name)
  536.       break;
  537.  
  538.     if(aspectRatio >= WIDE_AR_CUTOFF)
  539.       ht = Math.round(wd * 9 / 16);
  540.  
  541.     forEach(vertResAr, function(idx, elm) {
  542.       var tolerance = elm[0] * 0.05;
  543.       if(ht >= elm[0] - tolerance && ht < elm[0] + tolerance) {
  544.         name = elm[1];
  545.         return false;
  546.         }
  547.       });
  548.  
  549.     if(name)
  550.       break;
  551.  
  552.     // Snap to std vert res
  553.     var vertResList = [ 4320, 3160, 2880, 2160, 1536, 1080, 720, 480, 360, 240, 144 ];
  554.  
  555.     forEach(vertResList, function(idx, elm) {
  556.       var tolerance = elm * 0.05;
  557.       if(ht >= elm - tolerance && ht < elm + tolerance) {
  558.         ht = elm;
  559.         return false;
  560.         }
  561.       });
  562.  
  563.     name = String(ht) + (aspectRatio < FULL_AR_CUTOFF ? "f" : "p");
  564.   } while(false);
  565.  
  566.   if(aspectRatio >= ULTRA_WIDE_AR_CUTOFF)
  567.     name = "u" + name;
  568.   else if(aspectRatio >= WIDE_AR_CUTOFF)
  569.     name = "w" + name;
  570.  
  571.   return name;
  572.   }
  573.  
  574. function mapResToQuality(res) {
  575.   if(!res.match(/^(\d+)x(\d+)/))
  576.     return res;
  577.  
  578.   var wd = +RegExp.$1;
  579.   var ht = +RegExp.$2;
  580.  
  581.   if(wd < ht) {
  582.     var t = wd;
  583.     wd = ht;
  584.     ht = t;
  585.     }
  586.  
  587.   var resList = [
  588.     { res: 3160, q : "ultrahighres" },
  589.     { res: 1536, q : "highres" },
  590.     { res: 1080, q: "hd1080" },
  591.     { res: 720, q : "hd720" },
  592.     { res: 480, q : "large" },
  593.     { res: 360, q : "medium" }
  594.     ];
  595.  
  596.   var q;
  597.  
  598.   forEach(resList, function(idx, elm) {
  599.     if(ht >= elm.res) {
  600.       q = elm.q;
  601.       return false;
  602.       }
  603.     });
  604.  
  605.   return q || "small";
  606.   }
  607.  
  608. function getQualityIdx(quality) {
  609.   var list = [ "small", "medium", "large", "hd720", "hd1080", "highres", "ultrahighres" ];
  610.  
  611.   for(var i = 0; i < list.length; ++i) {
  612.     if(list[i] == quality)
  613.       return i;
  614.     }
  615.  
  616.   return -1;
  617.   }
  618.  
  619. // =============================================================================
  620.  
  621. RegExp.escape = function(s) {
  622.   return String(s).replace(/([.*+?^=!:${}()|\[\]\/\\])/g, "\\$1");
  623.   };
  624.  
  625. var decryptSig = {
  626.   store: {}
  627.   };
  628.  
  629. (function () {
  630.  
  631. var SIG_STORE_ID = "ujsYtLinksSig";
  632.  
  633. var CHK_SIG_INTERVAL = 3 * 86400;
  634.  
  635. decryptSig.load = function() {
  636.   var obj = localStorage[SIG_STORE_ID];
  637.   if(obj == null)
  638.     return;
  639.  
  640.   decryptSig.store = JSON.parse(obj);
  641.   };
  642.  
  643. decryptSig.save = function() {
  644.   localStorage[SIG_STORE_ID] = JSON.stringify(decryptSig.store);
  645.   };
  646.  
  647. decryptSig.extractScriptUrl = function(data) {
  648.   if(data.match(/ytplayer.config\s*=.*"assets"\s*:\s*\{.*"js"\s*:\s*(".+?")[,}]/))
  649.     return JSON.parse(RegExp.$1);
  650.   else if(data.match(/ytplayer.web_player_context_config\s*=\s*\{.*"rootElementId":"movie_player","jsUrl":(".+?")[,}]/))
  651.     return JSON.parse(RegExp.$1);
  652.   else
  653.     return false;
  654.   };
  655.  
  656. decryptSig.getScriptName = function(url) {
  657.   if(url.match(/\/yts\/jsbin\/player-(.*)\/[a-zA-Z0-9_]+\.js$/))
  658.     return RegExp.$1;
  659.  
  660.   if(url.match(/\/yts\/jsbin\/html5player-(.*)\/html5player\.js$/))
  661.     return RegExp.$1;
  662.  
  663.   if(url.match(/\/html5player-(.*)\.js$/))
  664.     return RegExp.$1;
  665.  
  666.   return url;
  667.   };
  668.  
  669. decryptSig.fetchScript = function(scriptName, url) {
  670.   function success(data) {
  671.     data = data.replace(/\n|\r/g, "");
  672.  
  673.     var sigFn;
  674.  
  675.     forEach([
  676.       /\.signature\s*=\s*(\w+)\(\w+\)/,
  677.       /\.set\(\"signature\",([\w$]+)\(\w+\)\)/,
  678.       /\/yt\.akamaized\.net\/\)\s*\|\|\s*\w+\.set\s*\(.*?\)\s*;\s*\w+\s*&&\s*\w+\.set\s*\(\s*\w+\s*,\s*(?:encodeURIComponent\s*\()?([\w$]+)\s*\(/,
  679.       /\b([a-zA-Z0-9$]{2})\s*=\s*function\(\s*a\s*\)\s*{\s*a\s*=\s*a\.split\(\s*""\s*\)/,
  680.       /([a-zA-Z0-9$]+)\s*=\s*function\(\s*a\s*\)\s*{\s*a\s*=\s*a\.split\(\s*""\s*\)\s*;\s*\w+\.\w+\s*\(/,
  681.       /([a-zA-Z0-9$]+)\s*=\s*function\(\s*a\s*\)\s*{\s*a\s*=\s*a\.split\(\s*""\s*\)/,
  682.       /;\s*\w+\s*&&\s*\w+\.set\(\w+\s*,\s*(?:encodeURIComponent\s*\()?([\w$]+)\s*\(/,
  683.       /;\s*\w+\s*&&\s*\w+\.set\(\w+\s*,\s*\([^)]*\)\s*\(\s*([\w$]+)\s*\(/
  684.       ], function(idx, regex) {
  685.         if(data.match(regex)) {
  686.           sigFn = RegExp.$1;
  687.           return false;
  688.           }
  689.         });
  690.  
  691.     if(sigFn == null)
  692.       return;
  693.  
  694.     //console.log(scriptName + " sig fn: " + sigFn);
  695.  
  696.     var fnArgBody = '\\s*\\((\\w+)\\)\\s*{(\\w+=\\w+\\.split\\(""\\);.+?;return \\w+\\.join\\(""\\))';
  697.  
  698.     if(!data.match(new RegExp("function " + RegExp.escape(sigFn) + fnArgBody)) &&
  699.      !data.match(new RegExp("(?:var |[,;]\\s*|^\\s*)" + RegExp.escape(sigFn) + "\\s*=\\s*function" + fnArgBody)))
  700.       return;
  701.  
  702.     var fnParam = RegExp.$1;
  703.     var fnBody = RegExp.$2;
  704.  
  705.     var fnHlp = {};
  706.     var objHlp = {};
  707.  
  708.     //console.log("param: " + fnParam);
  709.     //console.log(fnBody);
  710.  
  711.     fnBody = fnBody.split(";");
  712.  
  713.     forEach(fnBody, function(idx, elm) {
  714.       // its own property
  715.       if(elm.match(new RegExp("^" + fnParam + "=" + fnParam + "\\.")))
  716.         return;
  717.  
  718.       // global fn
  719.       if(elm.match(new RegExp("^" + fnParam + "=([a-zA-Z_$][a-zA-Z0-9_$]*)\\("))) {
  720.         var name = RegExp.$1;
  721.         //console.log("fnHlp: " + name);
  722.  
  723.         if(fnHlp[name])
  724.           return;
  725.  
  726.         if(data.match(new RegExp("(function " + RegExp.escape(RegExp.$1) + ".+?;return \\w+})")))
  727.           fnHlp[name] = RegExp.$1;
  728.  
  729.         return;
  730.         }
  731.  
  732.       // object fn
  733.       if(elm.match(new RegExp("^([a-zA-Z_$][a-zA-Z0-9_$]*)\.([a-zA-Z_$][a-zA-Z0-9_$]*)\\("))) {
  734.         var name = RegExp.$1;
  735.         //console.log("objHlp: " + name);
  736.  
  737.         if(objHlp[name])
  738.           return;
  739.  
  740.         if(data.match(new RegExp("(var " + RegExp.escape(RegExp.$1) + "={.+?};)")))
  741.           objHlp[name] = RegExp.$1;
  742.  
  743.         return;
  744.         }
  745.       });
  746.  
  747.     //console.log(fnHlp);
  748.     //console.log(objHlp);
  749.  
  750.     var fnHlpStr = "";
  751.  
  752.     for(var k in fnHlp)
  753.       fnHlpStr += fnHlp[k];
  754.  
  755.     for(var k in objHlp)
  756.       fnHlpStr += objHlp[k];
  757.  
  758.     var fullFn = "function(" + fnParam + "){" + fnHlpStr + fnBody.join(";") + "}";
  759.     //console.log(fullFn);
  760.  
  761.     decryptSig.store[scriptName] = { ver: relInfo.ver, ts: timeNowInSec(), fn: fullFn };
  762.     //console.log(decryptSig);
  763.  
  764.     decryptSig.save();
  765.     }
  766.  
  767.   // Entry point
  768.   dom.crossAjax({ url: url, success: success });
  769.   };
  770.  
  771. decryptSig.condFetchScript = function(url) {
  772.   var scriptName = decryptSig.getScriptName(url);
  773.   var store = decryptSig.store[scriptName];
  774.   var now = timeNowInSec();
  775.  
  776.   if(store && now - store.ts < CHK_SIG_INTERVAL && store.ver == relInfo.ver)
  777.     return;
  778.  
  779.   decryptSig.fetchScript(scriptName, url);
  780.   };
  781.  
  782. }) ();
  783.  
  784. function deobfuscateVideoSig(scriptName, sig) {
  785.   if(!decryptSig.store[scriptName])
  786.     return sig;
  787.  
  788.   //console.log(decryptSig.store[scriptName].fn);
  789.  
  790.   try {
  791.     sig = eval("(" + decryptSig.store[scriptName].fn + ") (\"" + sig + "\")");
  792.   } catch(e) {
  793.     }
  794.  
  795.   return sig;
  796.   }
  797.  
  798. // =============================================================================
  799.  
  800. function deobfuscateSigInObj(map, obj) {
  801.   if(obj.s == null || obj.sig != null)
  802.     return;
  803.  
  804.   var sig = deobfuscateVideoSig(map.scriptName, obj.s);
  805.  
  806.   if(sig != obj.s) {
  807.     obj.sig = sig;
  808.     delete obj.s;
  809.     }
  810.   }
  811.  
  812. function parseStreamMap(map, value) {
  813.   var fmtUrlList = [];
  814.  
  815.   forEach(value.split(","), function(idx, elm) {
  816.     var elms = elm.replace(/\\\//g, "/").replace(/\\u0026/g, "&").split("&");
  817.     var obj = {};
  818.  
  819.     forEach(elms, function(idx, elm) {
  820.       var kv = elm.split("=");
  821.       obj[kv[0]] = decodeURIComponent(kv[1]);
  822.       });
  823.  
  824.     obj.itag = +obj.itag;
  825.  
  826.     if(obj.conn != null && obj.conn.match(/^rtmpe:\/\//))
  827.       obj.isDrm = true;
  828.  
  829.     if(obj.s != null && obj.sig == null) {
  830.       var sig = deobfuscateVideoSig(map.scriptName, obj.s);
  831.       if(sig != obj.s) {
  832.         obj.sig = sig;
  833.         delete obj.s;
  834.         }
  835.       }
  836.  
  837.     fmtUrlList.push(obj);
  838.     });
  839.  
  840.   //logMsg(fmtUrlList);
  841.  
  842.   map.fmtUrlList = fmtUrlList;
  843.   }
  844.  
  845. function parseAdaptiveStreamMap(map, value) {
  846.   var fmtUrlList = [];
  847.  
  848.   forEach(value.split(","), function(idx, elm) {
  849.     var elms = elm.replace(/\\\//g, "/").replace(/\\u0026/g, "&").split("&");
  850.     var obj = {};
  851.  
  852.     forEach(elms, function(idx, elm) {
  853.       var kv = elm.split("=");
  854.       obj[kv[0]] = decodeURIComponent(kv[1]);
  855.       });
  856.  
  857.     obj.itag = +obj.itag;
  858.  
  859.     if(obj.bitrate != null)
  860.       obj.bitrate = +obj.bitrate;
  861.  
  862.     if(obj.clen != null)
  863.       obj.clen = +obj.clen;
  864.  
  865.     if(obj.fps != null)
  866.       obj.fps = +obj.fps;
  867.  
  868.     //logMsg(obj);
  869.     //logMsg(map.videoId + ": " + obj.index + " " + obj.init + " " + obj.itag + " " + obj.size + " " + obj.bitrate + " " + obj.type);
  870.  
  871.     if(obj.type.match(/^video\/mp4/) && !obj.type.match(/;\s*\+?codecs="av01\./))
  872.       obj.effType = "video/x-m4v";
  873.  
  874.     if(obj.type.match(/^audio\//))
  875.       obj.size = "audio";
  876.  
  877.     obj.quality = mapResToQuality(obj.size);
  878.  
  879.     if(!map.adaptiveAR && obj.size.match(/^(\d+)x(\d+)/))
  880.       map.adaptiveAR = +RegExp.$1 / +RegExp.$2;
  881.  
  882.     deobfuscateSigInObj(map, obj);
  883.  
  884.     fmtUrlList.push(obj);
  885.  
  886.     map.fmtMap[obj.itag] = { res: cnvResName(obj.size) };
  887.     });
  888.  
  889.   //logMsg(fmtUrlList);
  890.  
  891.   map.fmtUrlList = map.fmtUrlList.concat(fmtUrlList);
  892.   }
  893.  
  894. function parseFmtList(map, value) {
  895.   var list = value.split(",");
  896.  
  897.   forEach(list, function(idx, elm) {
  898.     var elms = elm.replace(/\\\//g, "/").split("/");
  899.  
  900.     var fmtId = elms[0];
  901.     var res = elms[1];
  902.     elms.splice(/*idx*/ 0, /*rm*/ 2);
  903.  
  904.     if(map.adaptiveAR && res.match(/^(\d+)x(\d+)/))
  905.       res = Math.round(+RegExp.$2 * map.adaptiveAR) + "x" + RegExp.$2;
  906.  
  907.     map.fmtMap[fmtId] = { res: cnvResName(res), vars: elms };
  908.     });
  909.  
  910.   //logMsg(map.fmtMap);
  911.   }
  912.  
  913. function parseNewFormatsMap(map, str, unescSlashFlag) {
  914.   if(unescSlashFlag)
  915.     str = str.replace(/\\\//g, "/").replace(/\\"/g, "\"").replace(/\\\\/g, "\\");
  916.  
  917.   var list = JSON.parse(str);
  918.  
  919.   forEach(list, function(idx, elm) {
  920.     var obj = {
  921.       bitrate: elm.bitrate,
  922.       fps: elm.fps,
  923.       itag: elm.itag,
  924.       type: elm.mimeType,
  925.       url: elm.url // no longer present (2020-06)
  926.       };
  927.  
  928.     // Distinguish between AV1, M4V and MP4
  929.     if(elm.audioQuality == null && obj.type.match(/^video\/mp4/) && !obj.type.match(/;\s*\+?codecs="av01\./))
  930.       obj.effType = "video/x-m4v";
  931.  
  932.     if(elm.contentLength != null)
  933.       obj.clen = +elm.contentLength;
  934.  
  935.     if(obj.type.match(/^audio\//))
  936.       obj.size = "audio";
  937.     else
  938.       obj.size = elm.width + "x" + elm.height;
  939.  
  940.     obj.quality = mapResToQuality(obj.size);
  941.  
  942.     var cipher = elm.cipher || elm.signatureCipher;
  943.     if(cipher) {
  944.       forEach(cipher.split("&"), function(idx, elm) {
  945.         var kv = elm.split("=");
  946.         obj[kv[0]] = decodeURIComponent(kv[1]);
  947.         });
  948.  
  949.       deobfuscateSigInObj(map, obj);
  950.       }
  951.  
  952.     map.fmtUrlList.push(obj);
  953.  
  954.     if(map.fmtMap[obj.itag] == null)
  955.       map.fmtMap[obj.itag] = { res: cnvResName(obj.size) };
  956.     });
  957.   }
  958.  
  959. function getVideoInfo(url, callback) {
  960.   function getVideoNameByType(elm) {
  961.     return getVideoName(elm.effType || elm.type);
  962.     }
  963.  
  964.   function success(data) {
  965.     var map = {};
  966.  
  967.     if(data.match(/<div\s+id="verify-details">/)) {
  968.       logMsg("Skipping " + url);
  969.       return;
  970.       }
  971.  
  972.     if(data.match(/<h1\s+id="unavailable-message">/)) {
  973.       logMsg("Not avail " + url);
  974.       return;
  975.       }
  976.  
  977.     if(data.match(/"t":\s?"(.+?)"/))
  978.       map.t = RegExp.$1;
  979.  
  980.     if(data.match(/"(?:video_id|videoId)":\s?"(.+?)"/))
  981.       map.videoId = RegExp.$1;
  982.     else if(data.match(/\\"videoId\\":\s?\\"(.+?)\\"/))
  983.       map.videoId = RegExp.$1;
  984.     else if(data.match(/'VIDEO_ID':\s?"(.+?)",/))
  985.       map.videoId = RegExp.$1;
  986.  
  987.     if(!map.videoId) {
  988.       logMsg("No videoId; skipping " + url);
  989.       return;
  990.       }
  991.  
  992.     map.scriptUrl = decryptSig.extractScriptUrl(data);
  993.     if(map.scriptUrl) {
  994.       //logMsg(map.videoId + " script: " + map.scriptUrl);
  995.       map.scriptName = decryptSig.getScriptName(map.scriptUrl);
  996.       decryptSig.condFetchScript(map.scriptUrl);
  997.       }
  998.  
  999.     if(data.match(/<meta\s+itemprop="name"\s*content="(.+?)"\s*>\s*\n/))
  1000.       map.title = unescHtmlEntities(RegExp.$1);
  1001.  
  1002.     if(map.title == null && data.match(/<meta\s+name="title"\s*content="(.+?)"\s*>/))
  1003.       map.title = unescHtmlEntities(RegExp.$1);
  1004.  
  1005.     var titleStream;
  1006.  
  1007.     if(map.title == null && data.match(/"videoDetails":{(.*?)}[,}]/))
  1008.       titleStream = RegExp.$1;
  1009.     else
  1010.       titleStream = data;
  1011.  
  1012.     // Edge replaces & with \u0026
  1013.     if(map.title == null && titleStream.match(/[,{]"title":("[^"]+")[,}]/))
  1014.       map.title = unescHtmlEntities(JSON.parse(RegExp.$1));
  1015.  
  1016.     // Edge fails the previous regex if \" exists
  1017.     if(map.title == null && titleStream.match(/[,{]"title":(".*?")[,}]"/))
  1018.       map.title = unescHtmlEntities(JSON.parse(RegExp.$1));
  1019.  
  1020.     if(data.match(/[,{]\\"isLiveContent\\":\s*true[,}]/))
  1021.       map.isLive = true;
  1022.  
  1023.     map.fmtUrlList = [];
  1024.  
  1025.     var oldFmtFlag;
  1026.     var newFmtFlag;
  1027.  
  1028.     if(data.match(/[,{]"url_encoded_fmt_stream_map":\s?"([^"]+)"[,}]/)) {
  1029.       parseStreamMap(map, RegExp.$1);
  1030.       oldFmtFlag = true;
  1031.       }
  1032.  
  1033.     map.fmtMap = {};
  1034.  
  1035.     if(data.match(/[,{]"adaptive_fmts":\s?"(.+?)"[,}]/)) {
  1036.       parseAdaptiveStreamMap(map, RegExp.$1);
  1037.       oldFmtFlag = true;
  1038.       }
  1039.  
  1040.     if(data.match(/[,{]"fmt_list":\s?"([^"]+)"[,}]/))
  1041.       parseFmtList(map, RegExp.$1);
  1042.  
  1043.     // Is part of 'player_response' and is escaped
  1044.     if(!oldFmtFlag && data.match(/\\"formats\\":(\[{[^\]]*}\])[},]/)) {
  1045.       parseNewFormatsMap(map, RegExp.$1, /*unescSlash*/ true);
  1046.       newFmtFlag = true;
  1047.       }
  1048.  
  1049.     if(!oldFmtFlag && data.match(/\\"adaptiveFormats\\":(\[{[^\]]*}\])[},]/)) {
  1050.       parseNewFormatsMap(map, RegExp.$1, /*unescSlash*/ true);
  1051.       newFmtFlag = true;
  1052.       }
  1053.  
  1054.     // Is part of 'ytInitialPlayerResponse' and is not escaped
  1055.     if(!oldFmtFlag && !newFmtFlag) {
  1056.       if(data.match(/[,{]"formats":(\[{[^\]]*}\])[},]/))
  1057.         parseNewFormatsMap(map, RegExp.$1);
  1058.  
  1059.       if(data.match(/[,{]"adaptiveFormats":(\[{[^\]]*}\])[},]/))
  1060.         parseNewFormatsMap(map, RegExp.$1);
  1061.       }
  1062.  
  1063.     if(data.match(/[,{]"dashmpd":\s?"(.+?)"[,}]/))
  1064.       map.dashmpd = decodeURIComponent(RegExp.$1.replace(/\\\//g, "/"));
  1065.     else if(data.match(/[,{]\\"dashManifestUrl\\":\s?\\"(.+?)\\"[,}]/))
  1066.       map.dashmpd = decodeURIComponent(RegExp.$1.replace(/\\\//g, "/"));
  1067.  
  1068.     if(userConfig.filteredFormats.length > 0) {
  1069.       for(var i = 0; i < map.fmtUrlList.length; ++i) {
  1070.         if(inArray(getVideoNameByType(map.fmtUrlList[i]), userConfig.filteredFormats) >= 0) {
  1071.           map.fmtUrlList.splice(i, /*len*/ 1);
  1072.           --i;
  1073.           continue;
  1074.           }
  1075.         }
  1076.       }
  1077.  
  1078.     var hasHighRes = false;
  1079.     var hasHighAudio = false;
  1080.     var HIGH_AUDIO_BPS = 96 * 1024;
  1081.  
  1082.     forEach(map.fmtUrlList, function(idx, elm) {
  1083.       hasHighRes |= elm.quality == "hd720" || elm.quality == "hd1080";
  1084.  
  1085.       if(elm.quality == "audio")
  1086.         hasHighAudio |= elm.bitrate >= HIGH_AUDIO_BPS;
  1087.       });
  1088.  
  1089.     if(hasHighRes) {
  1090.       for(var i = 0; i < map.fmtUrlList.length; ++i) {
  1091.         if(inArray(getVideoNameByType(map.fmtUrlList[i]), userConfig.keepFormats) >= 0)
  1092.           continue;
  1093.  
  1094.         if(map.fmtUrlList[i].quality == "small") {
  1095.           map.fmtUrlList.splice(i, /*len*/ 1);
  1096.           --i;
  1097.           continue;
  1098.           }
  1099.         }
  1100.       }
  1101.  
  1102.     if(hasHighAudio) {
  1103.       for(var i = 0; i < map.fmtUrlList.length; ++i) {
  1104.         if(inArray(getVideoNameByType(map.fmtUrlList[i]), userConfig.keepFormats) >= 0)
  1105.           continue;
  1106.  
  1107.         if(map.fmtUrlList[i].quality == "audio" && map.fmtUrlList[i].bitrate < HIGH_AUDIO_BPS) {
  1108.           map.fmtUrlList.splice(i, /*len*/ 1);
  1109.           --i;
  1110.           continue;
  1111.           }
  1112.         }
  1113.       }
  1114.  
  1115.     map.fmtUrlList.sort(cmpUrlList);
  1116.  
  1117.     callback(map);
  1118.     }
  1119.  
  1120.   // Entry point
  1121.   dom.ajax({ url: url, success: success });
  1122.   }
  1123.  
  1124. function cmpUrlList(a, b) {
  1125.   var diff = getQualityIdx(b.quality) - getQualityIdx(a.quality);
  1126.   if(diff != 0)
  1127.     return diff;
  1128.  
  1129.   var aRes = (a.size || "").match(/^(\d+)x(\d+)/);
  1130.   var bRes = (b.size || "").match(/^(\d+)x(\d+)/);
  1131.  
  1132.   if(aRes == null) aRes = [ 0, 0, 0 ];
  1133.   if(bRes == null) bRes = [ 0, 0, 0 ];
  1134.  
  1135.   diff = +bRes[2] - +aRes[2];
  1136.   if(diff != 0)
  1137.     return diff;
  1138.  
  1139.   var aFps = a.fps || 0;
  1140.   var bFps = b.fps || 0;
  1141.  
  1142.   return bFps - aFps;
  1143.   }
  1144.  
  1145. // -----------------------------------------------------------------------------
  1146.  
  1147. var CSS_PREFIX = "ujs-";
  1148.  
  1149. var HDR_LINKS_HTML_ID = CSS_PREFIX + "hdr-links-div";
  1150. var LINKS_HTML_ID = CSS_PREFIX + "links-cls";
  1151. var LINKS_TP_HTML_ID = CSS_PREFIX + "links-tp-div";
  1152. var UPDATE_HTML_ID = CSS_PREFIX + "update-div";
  1153. var VID_FMT_BTN_ID = CSS_PREFIX + "vid-fmt-btn";
  1154.  
  1155. /* The !important attr is to override the page's specificity. */
  1156. var CSS_STYLES =
  1157.   "#" + VID_FMT_BTN_ID + dom.emitCssStyles({
  1158.     "cursor": "pointer",
  1159.     "margin": "0 0.333em",
  1160.     "padding": "0.5em"
  1161.     }) + "\n" +
  1162.   "#" + UPDATE_HTML_ID + dom.emitCssStyles({
  1163.     "background-color": "#f00",
  1164.     "border-radius": "2px",
  1165.     "color": "#fff",
  1166.     "padding": "5px",
  1167.     "text-align": "center",
  1168.     "text-decoration": "none",
  1169.     "position": "fixed",
  1170.     "top": "0.5em",
  1171.     "right": "0.5em",
  1172.     "z-index": "1000"
  1173.     }) + "\n" +
  1174.   "#" + UPDATE_HTML_ID + ":hover" + dom.emitCssStyles({
  1175.     "background-color": "#0d0"
  1176.     }) + "\n" +
  1177.   "#page-container #" + HDR_LINKS_HTML_ID + dom.emitCssStyles({
  1178.     "font-size": "90%"
  1179.     }) + "\n" +
  1180.   "#page-manager #" + HDR_LINKS_HTML_ID + dom.emitCssStyles({ // 2017 Material Design
  1181.     "font-size": "1.2em"
  1182.     }) + "\n" +
  1183.   "#" + HDR_LINKS_HTML_ID + dom.emitCssStyles({
  1184.     "background-color": "#f8f8f8",
  1185.     "border": "#eee 1px solid",
  1186.     //"border-radius": "3px",
  1187.     "color": "#333",
  1188.     "margin": "5px",
  1189.     "padding": "5px"
  1190.     }) + "\n" +
  1191.   "html[dark] #" + HDR_LINKS_HTML_ID + dom.emitCssStyles({
  1192.     "background-color": "#222",
  1193.     "border": "none"
  1194.     }) + "\n" +
  1195.   "#" + HDR_LINKS_HTML_ID + " ." + CSS_PREFIX + "group" + dom.emitCssStyles({
  1196.     "background-color": "#fff",
  1197.     "color": "#000 !important",
  1198.     "border": "#ccc 1px solid",
  1199.     "border-radius": "3px",
  1200.     "display": "inline-block",
  1201.     "margin": "3px",
  1202.     }) + "\n" +
  1203.   "html[dark] #" + HDR_LINKS_HTML_ID + " ." + CSS_PREFIX + "group" + dom.emitCssStyles({
  1204.     "background-color": "#444",
  1205.     "color": "#fff !important",
  1206.     "border": "none"
  1207.     }) + "\n" +
  1208.   "#" + HDR_LINKS_HTML_ID + " a" + dom.emitCssStyles({
  1209.     "display": "table-cell",
  1210.     "padding": "3px",
  1211.     "text-decoration": "none"
  1212.     }) + "\n" +
  1213.   "#" + HDR_LINKS_HTML_ID + " a:hover" + dom.emitCssStyles({
  1214.     "background-color": "#d1e1fa"
  1215.     }) + "\n" +
  1216.   "div." + LINKS_HTML_ID + dom.emitCssStyles({
  1217.     "border-radius": "3px",
  1218.     "cursor": "default",
  1219.     "line-height": "1em",
  1220.     "position": "absolute",
  1221.     "left": "0",
  1222.     "top": "0",
  1223.     "z-index": "1000"
  1224.     }) + "\n" +
  1225.   "#page-manager div." + LINKS_HTML_ID + dom.emitCssStyles({ // 2017 Material Design
  1226.     "font-size": "1.2em",
  1227.     "padding": "2px 4px"
  1228.     }) + "\n" +
  1229.   "div." + LINKS_HTML_ID + ".layout2017" + dom.emitCssStyles({ // 2017 Material Design
  1230.     "font-size": "1.2em"
  1231.     }) + "\n" +
  1232.   "#" + LINKS_TP_HTML_ID + dom.emitCssStyles({
  1233.     "background-color": "#f0f0f0",
  1234.     "border": "#aaa 1px solid",
  1235.     "padding": "3px 0",
  1236.     "text-decoration": "none",
  1237.     "white-space": "nowrap",
  1238.     "z-index": "1100"
  1239.     }) + "\n" +
  1240.   "html[dark] #" + LINKS_TP_HTML_ID + dom.emitCssStyles({
  1241.     "background-color": "#222"
  1242.     }) + "\n" +
  1243.   "div." + LINKS_HTML_ID + " a" + dom.emitCssStyles({
  1244.     "display": "inline-block",
  1245.     "margin": "1px",
  1246.     "text-decoration": "none"
  1247.     }) + "\n" +
  1248.   "div." + LINKS_HTML_ID + " ." + CSS_PREFIX + "video" + dom.emitCssStyles({
  1249.     "display": "inline-block",
  1250.     "text-align": "center",
  1251.     "width": "3.5em"
  1252.     }) + "\n" +
  1253.   "div." + LINKS_HTML_ID + " ." + CSS_PREFIX + "quality" + dom.emitCssStyles({
  1254.     "display": "inline-block",
  1255.     "text-align": "center",
  1256.     "width": "5.5em"
  1257.     }) + "\n" +
  1258.   "." + CSS_PREFIX + "video" + dom.emitCssStyles({
  1259.     "color": "#fff !important",
  1260.     "padding": "1px 3px",
  1261.     "text-align": "center"
  1262.     }) + "\n" +
  1263.   "." + CSS_PREFIX + "quality" + dom.emitCssStyles({
  1264.     "color": "#000 !important",
  1265.     "display": "table-cell",
  1266.     "min-width": "1.5em",
  1267.     "padding": "1px 3px",
  1268.     "text-align": "center",
  1269.     "vertical-align": "middle"
  1270.     }) + "\n" +
  1271.   "html[dark] ." + CSS_PREFIX + "quality" + dom.emitCssStyles({
  1272.     "color": "#fff !important"
  1273.     }) + "\n" +
  1274.   "." + CSS_PREFIX + "filesize" + dom.emitCssStyles({
  1275.     "font-size": "90%",
  1276.     "margin-top": "2px",
  1277.     "padding": "1px 3px",
  1278.     "text-align": "center"
  1279.     }) + "\n" +
  1280.   "html[dark] ." + CSS_PREFIX + "filesize" + dom.emitCssStyles({
  1281.     "color": "#999"
  1282.     }) + "\n" +
  1283.   "." + CSS_PREFIX + "filesize-err" + dom.emitCssStyles({
  1284.     "color": "#f00",
  1285.     "font-size": "90%",
  1286.     "margin-top": "2px",
  1287.     "padding": "1px 3px",
  1288.     "text-align": "center"
  1289.     }) + "\n" +
  1290.   "." + CSS_PREFIX + "not-avail" + dom.emitCssStyles({
  1291.     "background-color": "#700",
  1292.     "color": "#fff",
  1293.     "padding": "3px",
  1294.     }) + "\n" +
  1295.   "." + CSS_PREFIX + "3gp" + dom.emitCssStyles({
  1296.     "background-color": "#bbb"
  1297.     }) + "\n" +
  1298.   "." + CSS_PREFIX + "av1" + dom.emitCssStyles({
  1299.     "background-color": "#f5f"
  1300.     }) + "\n" +
  1301.   "." + CSS_PREFIX + "flv" + dom.emitCssStyles({
  1302.     "background-color": "#0dd"
  1303.     }) + "\n" +
  1304.   "." + CSS_PREFIX + "m4a" + dom.emitCssStyles({
  1305.     "background-color": "#07e"
  1306.     }) + "\n" +
  1307.   "." + CSS_PREFIX + "m4v" + dom.emitCssStyles({
  1308.     "background-color": "#07e"
  1309.     }) + "\n" +
  1310.   "." + CSS_PREFIX + "mp3" + dom.emitCssStyles({
  1311.     "background-color": "#7ba"
  1312.     }) + "\n" +
  1313.   "." + CSS_PREFIX + "mp4" + dom.emitCssStyles({
  1314.     "background-color": "#777"
  1315.     }) + "\n" +
  1316.   "." + CSS_PREFIX + "opus" + dom.emitCssStyles({
  1317.     "background-color": "#e0e"
  1318.     }) + "\n" +
  1319.   "." + CSS_PREFIX + "qt" + dom.emitCssStyles({
  1320.     "background-color": "#f08"
  1321.     }) + "\n" +
  1322.   "." + CSS_PREFIX + "vor" + dom.emitCssStyles({
  1323.     "background-color": "#e0e"
  1324.     }) + "\n" +
  1325.   "." + CSS_PREFIX + "vp9" + dom.emitCssStyles({
  1326.     "background-color": "#e0e"
  1327.     }) + "\n" +
  1328.   "." + CSS_PREFIX + "webm" + dom.emitCssStyles({
  1329.     "background-color": "#d4d"
  1330.     }) + "\n" +
  1331.   "." + CSS_PREFIX + "wmv" + dom.emitCssStyles({
  1332.     "background-color": "#c75"
  1333.     }) + "\n" +
  1334.   "." + CSS_PREFIX + "small" + dom.emitCssStyles({
  1335.     "color": "#888 !important",
  1336.     }) + "\n" +
  1337.   "." + CSS_PREFIX + "medium" + dom.emitCssStyles({
  1338.     "color": "#fff !important",
  1339.     "background-color": "#0d0"
  1340.     }) + "\n" +
  1341.   "." + CSS_PREFIX + "large" + dom.emitCssStyles({
  1342.     "color": "#fff !important",
  1343.     "background-color": "#00d",
  1344.     "background-image": "linear-gradient(to right, #00d, #00a)"
  1345.     }) + "\n" +
  1346.   "." + CSS_PREFIX + "hd720" + dom.emitCssStyles({
  1347.     "color": "#fff !important",
  1348.     "background-color": "#f90",
  1349.     "background-image": "linear-gradient(to right, #f90, #d70)"
  1350.     }) + "\n" +
  1351.   "." + CSS_PREFIX + "hd1080" + dom.emitCssStyles({
  1352.     "color": "#fff !important",
  1353.     "background-color": "#f00",
  1354.     "background-image": "linear-gradient(to right, #f00, #c00)"
  1355.     }) + "\n" +
  1356.   "." + CSS_PREFIX + "highres" + dom.emitCssStyles({
  1357.     "color": "#fff !important",
  1358.     "background-color": "#c0f",
  1359.     "background-image": "linear-gradient(to right, #c0f, #90f)"
  1360.     }) + "\n" +
  1361.   "." + CSS_PREFIX + "ultrahighres" + dom.emitCssStyles({
  1362.     "color": "#fff !important",
  1363.     "background-color": "#ffe42b",
  1364.     "background-image": "linear-gradient(to right, #ffe42b, #dfb200)"
  1365.     }) + "\n" +
  1366.   "." + CSS_PREFIX + "pos-rel" + dom.emitCssStyles({
  1367.     "position": "relative"
  1368.     }) + "\n" +
  1369.   "#" + HDR_LINKS_HTML_ID + " a.flash:hover" + dom.emitCssStyles({
  1370.     "background-color": "#ffa",
  1371.     "transition": "background-color 0.25s linear"
  1372.     }) + "\n" +
  1373.   "#" + HDR_LINKS_HTML_ID + " a.flash-out:hover" + dom.emitCssStyles({
  1374.     "transition": "background-color 0.25s linear"
  1375.     }) + "\n" +
  1376.   "div." + LINKS_HTML_ID + " a.flash div" + dom.emitCssStyles({
  1377.     "background-color": "#ffa",
  1378.     "transition": "background-color 0.25s linear"
  1379.     }) + "\n" +
  1380.   "div." + LINKS_HTML_ID + " a.flash-out div" + dom.emitCssStyles({
  1381.     "transition": "background-color 0.25s linear"
  1382.     }) + "\n" +
  1383.   "";
  1384.  
  1385. function condInsertHdr(divId) {
  1386.   if(dom.gE(HDR_LINKS_HTML_ID))
  1387.     return true;
  1388.  
  1389.   var insertPtNode = dom.gE(divId);
  1390.   if(!insertPtNode)
  1391.     return false;
  1392.  
  1393.   var divNode = dom.cE("div");
  1394.   divNode.id = HDR_LINKS_HTML_ID;
  1395.  
  1396.   insertPtNode.parentNode.insertBefore(divNode, insertPtNode);
  1397.   return true;
  1398.   }
  1399.  
  1400. function condRemoveHdr() {
  1401.   var node = dom.gE(HDR_LINKS_HTML_ID);
  1402.  
  1403.   if(node)
  1404.     node.parentNode.removeChild(node);
  1405.   }
  1406.  
  1407. function condInsertTooltip() {
  1408.   if(dom.gE(LINKS_TP_HTML_ID))
  1409.     return true;
  1410.  
  1411.   var toolTipNode = dom.cE("div");
  1412.   toolTipNode.id = LINKS_TP_HTML_ID;
  1413.  
  1414.   var cls = [ LINKS_HTML_ID ];
  1415.  
  1416.   if(dom.gE("page-manager"))
  1417.     cls.push("layout2017");
  1418.  
  1419.   dom.attr(toolTipNode, "class", cls.join(" "));
  1420.   dom.attr(toolTipNode, "style", "display: none;");
  1421.  
  1422.   dom.append(doc.body, toolTipNode);
  1423.  
  1424.   dom.addEvent(toolTipNode, "mouseleave", function(evt) {
  1425.     //logMsg("mouse leave");
  1426.     dom.attr(toolTipNode, "style", "display: none;");
  1427.     stopChkMouseInPopup();
  1428.     });
  1429.   }
  1430.  
  1431. function condInsertUpdateIcon() {
  1432.   if(dom.gE(UPDATE_HTML_ID))
  1433.     return;
  1434.  
  1435.   var divNode = dom.cE("a");
  1436.   divNode.id = UPDATE_HTML_ID;
  1437.   dom.append(doc.body, divNode);
  1438.   }
  1439.  
  1440. // -----------------------------------------------------------------------------
  1441.  
  1442. var STORE_ID = "ujsYtLinks";
  1443. var JSONP_ID = "ujsYtLinks";
  1444.  
  1445. // User settings can be saved in localStorage. Refer to documentation for details.
  1446. var userConfig = {
  1447.   copyToClipboard: true,
  1448.   filteredFormats: [],
  1449.   keepFormats: [],
  1450.   showVideoFormats: true,
  1451.   showVideoSize: true,
  1452.   tagLinks: true,
  1453.   useDecUnits: true
  1454.   };
  1455.  
  1456. var videoInfoCache = {};
  1457.  
  1458. var TAG_LINK_NUM_PER_BATCH = 5;
  1459. var INI_TAG_LINK_DELAY_MS = 200;
  1460. var SUB_TAG_LINK_DELAY_MS = 350;
  1461.  
  1462. // -----------------------------------------------------------------------------
  1463.  
  1464. var FULL_AR_CUTOFF = 1.5;
  1465. var WIDE_AR_CUTOFF = 2.0;
  1466. var ULTRA_WIDE_AR_CUTOFF = 2.3;
  1467.  
  1468. var HFR_CUTOFF = 45;
  1469.  
  1470. var fmtSizeSuffix = [ "kB", "MB", "GB" ];
  1471. var fmtSizeUnit = 1000;
  1472.  
  1473. function Links() {
  1474.   }
  1475.  
  1476. Links.prototype.init = function() {
  1477.   for(var k in userConfig) {
  1478.     try {
  1479.       var v = localStorage.getItem(STORE_ID + ".cfg." + k);
  1480.       if(v != null)
  1481.         userConfig[k] = JSON.parse(v);
  1482.     } catch(e) {
  1483.       logMsg(k + ": unable to parse '" + v + "'");
  1484.       }
  1485.     }
  1486.   };
  1487.  
  1488. Links.prototype.getPreferredFmt = function(map) {
  1489.   var selElm = map.fmtUrlList[0];
  1490.  
  1491.   forEach(map.fmtUrlList, function(idx, elm) {
  1492.     if(getVideoName(elm.type).toLowerCase() != "webm") {
  1493.       selElm = elm;
  1494.       return false;
  1495.       }
  1496.     });
  1497.  
  1498.   return selElm;
  1499.   };
  1500.  
  1501. Links.prototype.parseDashManifest = function(map, callback) {
  1502.   function parse(xml) {
  1503.     //logMsg(xml);
  1504.  
  1505.     var dashList = [];
  1506.  
  1507.     var adaptationSetDom = xml.getElementsByTagName("AdaptationSet");
  1508.     //logMsg(adaptationSetDom);
  1509.  
  1510.     forEach(adaptationSetDom, function(i, adaptationElm) {
  1511.       var mimeType = adaptationElm.getAttribute("mimeType");
  1512.       //logMsg(i + " " + mimeType);
  1513.  
  1514.       var representationDom = adaptationElm.getElementsByTagName("Representation");
  1515.       forEach(representationDom, function(j, repElm) {
  1516.         var dashElm = { mimeType: mimeType };
  1517.  
  1518.         forEach([ "codecs" ], function(idx, elm) {
  1519.           var v = repElm.getAttribute(elm);
  1520.           if(v != null)
  1521.             dashElm[elm] = v;
  1522.           });
  1523.  
  1524.         forEach([ "audioSamplingRate", "bandwidth", "frameRate", "height", "id", "width" ], function(idx, elm) {
  1525.           var v = repElm.getAttribute(elm);
  1526.           if(v != null)
  1527.             dashElm[elm] = +v;
  1528.           });
  1529.  
  1530.         var baseUrlDom = repElm.getElementsByTagName("BaseURL");
  1531.         dashElm.len = +baseUrlDom[0].getAttribute("yt:contentLength");
  1532.         dashElm.url = baseUrlDom[0].textContent;
  1533.  
  1534.         var segList = repElm.getElementsByTagName("SegmentList");
  1535.         if(segList.length > 0)
  1536.           dashElm.numSegments = segList[0].childNodes.length;
  1537.  
  1538.         dashList.push(dashElm);
  1539.         });
  1540.       });
  1541.  
  1542.     //logMsg(map);
  1543.     //logMsg(dashList);
  1544.  
  1545.     var maxBitRateMap = {};
  1546.  
  1547.     forEach(dashList, function(idx, dashElm) {
  1548.       if(dashElm.mimeType != "video/mp4" && dashElm.mimeType != "video/webm")
  1549.         return;
  1550.  
  1551.       var id = [ dashElm.mimeType, dashElm.width, dashElm.height, dashElm.frameRate ].join("|");
  1552.  
  1553.       if(maxBitRateMap[id] == null || maxBitRateMap[id] < dashElm.bandwidth)
  1554.         maxBitRateMap[id] = dashElm.bandwidth;
  1555.       });
  1556.  
  1557.     forEach(dashList, function(idx, dashElm) {
  1558.       var foundIdx;
  1559.  
  1560.       forEach(map.fmtUrlList, function(idx, mapElm) {
  1561.         if(dashElm.id == mapElm.itag) {
  1562.           foundIdx = idx;
  1563.           return false;
  1564.           }
  1565.         });
  1566.  
  1567.       if(foundIdx != null) {
  1568.         if(dashElm.numSegments != null)
  1569.           map.fmtUrlList[foundIdx].numSegments = dashElm.numSegments;
  1570.  
  1571.         return;
  1572.         }
  1573.  
  1574.       //logMsg(dashElm);
  1575.  
  1576.       if((dashElm.mimeType == "video/mp4" || dashElm.mimeType == "video/webm") && (dashElm.width >= 1000 || dashElm.height >= 1000)) {
  1577.         var id = [ dashElm.mimeType, dashElm.width, dashElm.height, dashElm.frameRate ].join("|");
  1578.  
  1579.         if(maxBitRateMap[id] == null || dashElm.bandwidth < maxBitRateMap[id])
  1580.           return;
  1581.  
  1582.         var size = dashElm.width + "x" + dashElm.height;
  1583.  
  1584.         if(map.fmtMap[dashElm.id] == null)
  1585.           map.fmtMap[dashElm.id] = { res: cnvResName(size) };
  1586.  
  1587.         map.fmtUrlList.push({
  1588.           bitrate: dashElm.bandwidth,
  1589.           effType: dashElm.mimeType == "video/mp4" ? "video/x-m4v" : null,
  1590.           filesize: dashElm.len,
  1591.           fps: dashElm.frameRate,
  1592.           itag: dashElm.id,
  1593.           quality: mapResToQuality(size),
  1594.           size: size,
  1595.           type: dashElm.mimeType + ";+codecs=\"" + dashElm.codecs + "\"",
  1596.           url: dashElm.url,
  1597.           numSegments: dashElm.numSegments
  1598.           });
  1599.         }
  1600.       else if(dashElm.mimeType == "audio/mp4" && dashElm.audioSamplingRate >= 44100) {
  1601.         if(map.fmtMap[dashElm.id] == null) {
  1602.           map.fmtMap[dashElm.id] = { res: "Audio" };
  1603.           }
  1604.  
  1605.         map.fmtUrlList.push({
  1606.           bitrate: dashElm.bandwidth,
  1607.           filesize: dashElm.len,
  1608.           itag: dashElm.id,
  1609.           quality: "audio",
  1610.           type: dashElm.mimeType + ";+codecs=\"" + dashElm.codecs + "\"",
  1611.           url: dashElm.url
  1612.           });
  1613.         }
  1614.       });
  1615.  
  1616.     if(condInsertHdr(me.getInsertPt()))
  1617.       me.createLinks(dom.gE(HDR_LINKS_HTML_ID), map);
  1618.     }
  1619.  
  1620.   // Entry point
  1621.   var me = this;
  1622.  
  1623.   if(!map.dashmpd) {
  1624.     setTimeout(callback, 0);
  1625.     return;
  1626.     }
  1627.  
  1628.   //logMsg(map.dashmpd);
  1629.  
  1630.   if(map.dashmpd.match(/\/s\/([a-zA-Z0-9.]+)\//)) {
  1631.     var sig = deobfuscateVideoSig(map.scriptName, RegExp.$1);
  1632.     map.dashmpd = map.dashmpd.replace(/\/s\/[a-zA-Z0-9.]+\//, "/sig/" + sig + "/");
  1633.     }
  1634.  
  1635.   dom.crossAjax({
  1636.     url: map.dashmpd,
  1637.     dataType: "xml",
  1638.  
  1639.     success: function(data, status, xhr) {
  1640.       parse(data);
  1641.       callback();
  1642.       },
  1643.  
  1644.     error: function(xhr, status) {
  1645.       callback();
  1646.       },
  1647.  
  1648.     complete: function(xhr) {
  1649.       }
  1650.     });
  1651.   };
  1652.  
  1653. Links.prototype.checkFmts = function(forceFlag) {
  1654.   var me = this;
  1655.  
  1656.   if(!userConfig.showVideoFormats)
  1657.     return;
  1658.  
  1659.   if(!forceFlag && userConfig.showVideoFormats == "btn") {
  1660.     condRemoveHdr();
  1661.  
  1662.     if(dom.gE(VID_FMT_BTN_ID))
  1663.       return;
  1664.  
  1665.     // 'container' is for Material Design
  1666.     var mastH = dom.gE("yt-masthead-signin") || dom.gE("yt-masthead-user") || dom.gE("container");
  1667.     if(!mastH)
  1668.       return;
  1669.  
  1670.     var btn = dom.cE("button");
  1671.     dom.attr(btn, "id", VID_FMT_BTN_ID);
  1672.     dom.attr(btn, "class", "yt-uix-button yt-uix-button-default");
  1673.     btn.innerHTML = "VidFmts";
  1674.  
  1675.     dom.prepend(mastH, btn);
  1676.  
  1677.     dom.addEvent(btn, "click", function(evt) {
  1678.       me.checkFmts(/*force*/ true);
  1679.       });
  1680.  
  1681.     return;
  1682.     }
  1683.  
  1684.   if(!loc.href.match(/watch\?(?:.+&)?v=([a-zA-Z0-9_-]+)/))
  1685.     return false;
  1686.  
  1687.   var videoId = RegExp.$1;
  1688.  
  1689.   var url = loc.protocol + "//" + loc.host + "/watch?v=" + videoId;
  1690.  
  1691.   var curVideoUrl = loc.toString();
  1692.  
  1693.   getVideoInfo(url, function(map) {
  1694.     me.parseDashManifest(map, function() {
  1695.       // Has become stale (eg switch forward/back pages quickly)
  1696.       if(curVideoUrl != loc.toString())
  1697.         return;
  1698.  
  1699.       me.showLinks(me.getInsertPt(), map);
  1700.       });
  1701.     });
  1702.   };
  1703.  
  1704. Links.prototype.genUrl = function(map, elm) {
  1705.   var url = elm.url + "&title=" + encodeSafeFname(map.title);
  1706.  
  1707.   if(elm.sig != null)
  1708.     url += "&sig=" + elm.sig;
  1709.  
  1710.   return url;
  1711.   };
  1712.  
  1713. Links.prototype.emitLinks = function(map) {
  1714.   function fmtSize(size, units, divisor) {
  1715.     if(!units) {
  1716.       units = fmtSizeSuffix;
  1717.       divisor = fmtSizeUnit;
  1718.       }
  1719.  
  1720.     for(var idx = 0; idx < units.length; ++idx) {
  1721.       size /= divisor;
  1722.  
  1723.       if(size < 10)
  1724.         return Math.round(size * 100) / 100 + units[idx];
  1725.  
  1726.       if(size < 100)
  1727.         return Math.round(size * 10) / 10 + units[idx];
  1728.  
  1729.       if(size < 1000 || idx == units.length - 1)
  1730.         return Math.round(size) + units[idx];
  1731.       }
  1732.     }
  1733.  
  1734.   function fmtBitrate(size) {
  1735.     return fmtSize(size, [ "kbps", "Mbps", "Gbps" ], 1000);
  1736.     }
  1737.  
  1738.   function getFileExt(videoName, elm) {
  1739.     if(videoName == "VP9")
  1740.       return "video.webm";
  1741.  
  1742.     if(videoName == "VOR")
  1743.       return "audio.webm";
  1744.  
  1745.     return videoName.toLowerCase();
  1746.     }
  1747.  
  1748.   // Entry point
  1749.   var me = this;
  1750.   var s = [];
  1751.  
  1752.   var resMap = {};
  1753.  
  1754.   map.fmtUrlList.sort(cmpUrlList);
  1755.  
  1756.   forEach(map.fmtUrlList, function(idx, elm) {
  1757.     var fmtMap = map.fmtMap[elm.itag];
  1758.  
  1759.     if(!resMap[fmtMap.res]) {
  1760.       resMap[fmtMap.res] = [];
  1761.       resMap[fmtMap.res].quality = elm.quality;
  1762.       }
  1763.  
  1764.     resMap[fmtMap.res].push(elm);
  1765.     });
  1766.  
  1767.   for(var res in resMap) {
  1768.     var qFields = [];
  1769.  
  1770.     qFields.push(dom.emitHtml("div", { "class": CSS_PREFIX + "quality " + CSS_PREFIX + resMap[res].quality }, res));
  1771.  
  1772.     forEach(resMap[res], function(idx, elm) {
  1773.       var fields = [];
  1774.       var fmtMap = map.fmtMap[elm.itag];
  1775.       var videoName = getVideoName(elm.effType || elm.type);
  1776.  
  1777.       var addMsg = [ elm.itag, elm.type, elm.size || elm.quality ];
  1778.  
  1779.       if(elm.fps != null)
  1780.         addMsg.push(elm.fps + "fps");
  1781.  
  1782.       var varMsg = "";
  1783.  
  1784.       if(elm.bitrate != null)
  1785.         varMsg = fmtBitrate(elm.bitrate);
  1786.       else if(fmtMap.vars != null)
  1787.         varMsg = fmtMap.vars.join();
  1788.  
  1789.       addMsg.push(varMsg);
  1790.  
  1791.       if(elm.s != null)
  1792.         addMsg.push("sig-" + elm.s.length);
  1793.  
  1794.       if(elm.filesize != null && elm.filesize >= 0)
  1795.         addMsg.push(fmtSize(elm.filesize));
  1796.  
  1797.       var vidSuffix = "";
  1798.  
  1799.       if(inArray(elm.itag, [ 82, 83, 84, 100, 101, 102 ]) >= 0)
  1800.         vidSuffix = " (3D)";
  1801.       else if(elm.fps != null && elm.fps >= HFR_CUTOFF)
  1802.         vidSuffix = " (HFR)";
  1803.  
  1804.       fields.push(dom.emitHtml("div", { "class": CSS_PREFIX + "video " + CSS_PREFIX + videoName.toLowerCase() }, videoName + vidSuffix));
  1805.  
  1806.       if(elm.filesize != null) {
  1807.         var filesize = elm.filesize;
  1808.  
  1809.         if((map.isLive || (elm.numSegments || 1) > 1) && filesize == 0)
  1810.           filesize = -1;
  1811.  
  1812.         if(filesize >= 0) {
  1813.           fields.push(dom.emitHtml("div", { "class": CSS_PREFIX + "filesize" }, fmtSize(filesize)));
  1814.           }
  1815.         else {
  1816.           var msg;
  1817.  
  1818.           if(elm.isDrm)
  1819.             msg = "DRM";
  1820.           else if(elm.s != null)
  1821.             msg = "sig-" + elm.s.length;
  1822.           else if(elm.numSegments > 1)
  1823.             msg = "Frag";
  1824.           else if(map.isLive)
  1825.             msg = "Live";
  1826.           else
  1827.             msg = "Err";
  1828.  
  1829.           fields.push(dom.emitHtml("div", { "class": CSS_PREFIX + "filesize-err" }, msg));
  1830.           }
  1831.         }
  1832.  
  1833.       var url;
  1834.  
  1835.       if(elm.isDrm)
  1836.         url = elm.conn + "?" + elm.stream;
  1837.       else
  1838.         url = me.genUrl(map, elm);
  1839.  
  1840.       var fname = cnvSafeFname(map.title);
  1841.       var ext = getFileExt(videoName, elm);
  1842.  
  1843.       if(ext)
  1844.         fname += "." + ext;
  1845.  
  1846.       var ahref = dom.emitHtml("a", {
  1847.         download: fname,
  1848.         ext: ext,
  1849.         href: url,
  1850.         res: res,
  1851.         title: addMsg.join(" | ")
  1852.         }, fields.join(""));
  1853.  
  1854.       qFields.push(ahref);
  1855.       });
  1856.  
  1857.     s.push(dom.emitHtml("div", { "class": CSS_PREFIX + "group" }, qFields.join("")));
  1858.     }
  1859.  
  1860.   return s.join("");
  1861.   };
  1862.  
  1863. Links.prototype.createLinks = function(insertNode, map) {
  1864.   function copyToClipboard(text) {
  1865.     var node = dom.cE("textarea");
  1866.  
  1867.     // Needed to prevent scrolling to top of page
  1868.     node.style.position = "fixed";
  1869.  
  1870.     node.value = text;
  1871.  
  1872.     dom.append(document.body, node);
  1873.  
  1874.     node.focus();
  1875.     node.select();
  1876.  
  1877.     var ret = false;
  1878.  
  1879.     try {
  1880.       if(document.execCommand("copy"))
  1881.         ret = true;
  1882.       } catch(e) {
  1883.         }
  1884.  
  1885.     document.body.removeChild(node);
  1886.  
  1887.     return ret;
  1888.     }
  1889.  
  1890.   function addCopyHandler(node) {
  1891.     forEach(dom.gT(node, "a"), function(idx, elm) {
  1892.       dom.addEvent(elm, "click", function(evt) {
  1893.         var me = this;
  1894.  
  1895.         var ext = dom.attr(me, "ext");
  1896.         var res = dom.attr(me, "res") || "";
  1897.  
  1898.         // This is the only video that can be downloaded directly
  1899.         if(ext == "mp4" && res.match(/^[a-z]?720[a-z]$/))
  1900.           return;
  1901.  
  1902.         evt.preventDefault();
  1903.  
  1904.         var fname = dom.attr(me, "download");
  1905.         //logMsg(fname);
  1906.  
  1907.         copyToClipboard(fname);
  1908.  
  1909.         var orgCls = dom.attr(me, "class") || "";
  1910.  
  1911.         dom.attr(me, "class", orgCls + " flash");
  1912.         setTimeout(function() { dom.attr(me, "class", orgCls + " flash-out"); }, 250);
  1913.         setTimeout(function() { dom.attr(me, "class", orgCls); }, 500);
  1914.         });
  1915.       });
  1916.     }
  1917.  
  1918.   // Entry point
  1919.   var me = this;
  1920.  
  1921.   if(insertNode == null)
  1922.     return;
  1923.  
  1924.   /* Emit to tmp node first because in GM 4, <a> event does not fire on nodes
  1925.    already in the DOM. */
  1926.  
  1927.   var stgNode = dom.cE("div");
  1928.   dom.html(stgNode, me.emitLinks(map));
  1929.  
  1930.   if(userConfig.copyToClipboard)
  1931.     addCopyHandler(stgNode);
  1932.  
  1933.   dom.html(insertNode, "");
  1934.  
  1935.   while(stgNode.childNodes.length > 0)
  1936.     insertNode.appendChild(stgNode.firstChild);
  1937.   };
  1938.  
  1939. var INI_SHOW_FILESIZE_DELAY_MS = 500;
  1940. var SUB_SHOW_FILESIZE_DELAY_MS = 150;
  1941. var PERIODIC_TAG_LINK_DELAY_MS = 3000;
  1942.  
  1943. Links.prototype.showLinks = function(divId, map) {
  1944.   function updateLinks() {
  1945.     // Has become stale (eg switch forward/back pages quickly)
  1946.     if(curVideoUrl != loc.toString())
  1947.       return;
  1948.  
  1949.     //!! Hack to update file size
  1950.     var node = dom.gE(HDR_LINKS_HTML_ID);
  1951.     if(node)
  1952.       me.createLinks(node, map);
  1953.     }
  1954.  
  1955.   // Entry point
  1956.   var me = this;
  1957.  
  1958.   // video is not avail
  1959.   if(!map.fmtUrlList)
  1960.     return;
  1961.  
  1962.   //logMsg(JSON.stringify(map));
  1963.  
  1964.   if(!condInsertHdr(divId))
  1965.     return;
  1966.  
  1967.   me.createLinks(dom.gE(HDR_LINKS_HTML_ID), map);
  1968.  
  1969.   if(!userConfig.showVideoSize)
  1970.     return;
  1971.  
  1972.   var curVideoUrl = loc.toString();
  1973.  
  1974.   forEach(map.fmtUrlList, function(idx, elm) {
  1975.     //logMsg(elm.itag + " " + elm.url);
  1976.  
  1977.     // We just fail outright for protected/obfuscated videos
  1978.     if(elm.isDrm || elm.s != null) {
  1979.       elm.filesize = -1;
  1980.       updateLinks();
  1981.       return;
  1982.       }
  1983.  
  1984.     if(elm.clen != null) {
  1985.       elm.filesize = elm.clen;
  1986.       updateLinks();
  1987.       return;
  1988.       }
  1989.  
  1990.     setTimeout(function() {
  1991.       // Has become stale (eg switch forward/back pages quickly)
  1992.       if(curVideoUrl != loc.toString())
  1993.         return;
  1994.  
  1995.       dom.crossAjax({
  1996.         type: "HEAD",
  1997.         url: me.genUrl(map, elm),
  1998.  
  1999.         success: function(data, status, xhr) {
  2000.           var filesize = xhr.getResponseHeader("Content-Length");
  2001.           if(filesize == null)
  2002.             return;
  2003.  
  2004.           //logMsg(map.title + " " + elm.itag + ": " + filesize);
  2005.           elm.filesize = +filesize;
  2006.  
  2007.           updateLinks();
  2008.           },
  2009.  
  2010.         error: function(xhr, status) {
  2011.           //logMsg(map.fmtMap[elm.itag].res + " " + getVideoName(elm.type) + ": " + xhr.status);
  2012.  
  2013.           if(xhr.status != 403 && xhr.status != 404)
  2014.             return;
  2015.  
  2016.           elm.filesize = -1;
  2017.  
  2018.           updateLinks();
  2019.           },
  2020.  
  2021.         complete: function(xhr) {
  2022.           //logMsg(map.title + ": " + xhr.getAllResponseHeaders());
  2023.           }
  2024.         });
  2025.        }, INI_SHOW_FILESIZE_DELAY_MS + idx * SUB_SHOW_FILESIZE_DELAY_MS);
  2026.     });
  2027.   };
  2028.  
  2029. Links.prototype.tagLinks = function() {
  2030.   var SCANNED = 1;
  2031.   var REQ_INFO = 2;
  2032.   var ADDED_INFO = 3;
  2033.  
  2034.   function prepareTagHtml(node, map) {
  2035.     var elm = me.getPreferredFmt(map);
  2036.     var fmtMap = map.fmtMap[elm.itag];
  2037.  
  2038.     dom.attr(node, "class", LINKS_HTML_ID + " " + CSS_PREFIX + "quality " + CSS_PREFIX + elm.quality);
  2039.  
  2040.     var label = fmtMap.res;
  2041.  
  2042.     if(elm.fps >= HFR_CUTOFF)
  2043.       label += elm.fps;
  2044.  
  2045.     var tagEvent;
  2046.  
  2047.     if(userConfig.tagLinks == "label")
  2048.       tagEvent = "click";
  2049.     else
  2050.       tagEvent = "mouseenter";
  2051.  
  2052.     dom.addEvent(node, tagEvent, function(evt) {
  2053.       //logMsg("mouse enter " + map.videoId);
  2054.       var pos = dom.offset(node);
  2055.       //logMsg("mouse enter: x " + pos.left + ", y " + pos.top);
  2056.  
  2057.       var toolTipNode = dom.gE(LINKS_TP_HTML_ID);
  2058.  
  2059.       dom.attr(toolTipNode, "style", "position: absolute; left: " + pos.left + "px; top: " + pos.top + "px");
  2060.  
  2061.       me.createLinks(toolTipNode, map);
  2062.  
  2063.       startChkMouseInPopup();
  2064.       });
  2065.  
  2066.     return label;
  2067.     }
  2068.  
  2069.   function addTag(hNode, map) {
  2070.     //logMsg(dom.html(hNode));
  2071.     //logMsg("hNode " + dom.attr(hNode, "class"));
  2072.     //var img = dom.gT(hNode, "img") [0];
  2073.     //logMsg(dom.attr(img, "src"));
  2074.     //logMsg(dom.attr(img, "class"));
  2075.  
  2076.     dom.attr(hNode, CSS_PREFIX + "processed", ADDED_INFO);
  2077.  
  2078.     var node = dom.cE("div");
  2079.  
  2080.     if(map.fmtUrlList && map.fmtUrlList.length > 0) {
  2081.       tagHtml = prepareTagHtml(node, map);
  2082.       }
  2083.     else {
  2084.       dom.attr(node, "class", LINKS_HTML_ID + " " + CSS_PREFIX + "not-avail");
  2085.       tagHtml = "NA";
  2086.       }
  2087.  
  2088.     var parentNode;
  2089.     var insNode;
  2090.  
  2091.     var cls = dom.attr(hNode, "class") || "";
  2092.     var isVideoWallStill = cls.match(/videowall-still/);
  2093.     if(isVideoWallStill) {
  2094.       parentNode = hNode;
  2095.       insNode = hNode.firstChild;
  2096.       }
  2097.     else {
  2098.       parentNode = hNode.parentNode;
  2099.       insNode = hNode;
  2100.       }
  2101.  
  2102.     // Remove existing tags
  2103.     var divNodes = parentNode.getElementsByTagName("div");
  2104.     for(var i = 0; i < divNodes.length; ++i) {
  2105.       var hNode = divNodes[i];
  2106.  
  2107.       if(me.isTagDiv(hNode))
  2108.         hNode.parentNode.removeChild(hNode);
  2109.       else
  2110.         ++i;
  2111. 	    }
  2112.  
  2113.     var parentCssPositionStyle = window.getComputedStyle(parentNode, null).getPropertyValue("position");
  2114.  
  2115.     if(parentCssPositionStyle != "absolute" && parentCssPositionStyle != "relative")
  2116.       dom.attr(parentNode, "class", dom.attr(parentNode, "class") + " " + CSS_PREFIX + "pos-rel");
  2117.  
  2118.     parentNode.insertBefore(node, insNode);
  2119.  
  2120.     dom.html(node, tagHtml);
  2121.     }
  2122.  
  2123.   function getFmt(videoId, hNode) {
  2124.     if(videoInfoCache[videoId]) {
  2125.       addTag(hNode, videoInfoCache[videoId]);
  2126.       return;
  2127.       }
  2128.  
  2129.     var url;
  2130.  
  2131.     if(videoId.match(/.+==$/))
  2132.       url = loc.protocol + "//" + loc.host + "/cthru?key=" + videoId;
  2133.     else
  2134.       url = loc.protocol + "//" + loc.host + "/watch?v=" + videoId;
  2135.  
  2136.     getVideoInfo(url, function(map) {
  2137.       videoInfoCache[videoId] = map;
  2138.       addTag(hNode, map);
  2139.       });
  2140.     }
  2141.  
  2142.   // Entry point
  2143.   var me = this;
  2144.  
  2145.   var list = [];
  2146.  
  2147.   forEach(dom.gT("a"), function(idx, hNode) {
  2148.     var href = dom.attr(hNode, "href") || "";
  2149.  
  2150.     if(!href.match(/watch\?v=([a-zA-Z0-9_-]+)/) &&
  2151.      !href.match(/watch_videos.+?&video_ids=([a-zA-Z0-9_-]+)/))
  2152.       return;
  2153.  
  2154.     var videoId = RegExp.$1;
  2155.     var oldHref = dom.attr(hNode, CSS_PREFIX + "href");
  2156.  
  2157.     if(href == oldHref && dom.attr(hNode, CSS_PREFIX + "processed"))
  2158.       return;
  2159.  
  2160.     if(!dom.inViewport(hNode))
  2161.       return;
  2162.  
  2163.     dom.attr(hNode, CSS_PREFIX + "processed", SCANNED);
  2164.     dom.attr(hNode, CSS_PREFIX + "href", href);
  2165.  
  2166.     var cls = dom.attr(hNode, "class") || "";
  2167.     if(!cls.match(/videowall-still/)) {
  2168.       if(cls == "yt-button" || cls.match(/yt-uix-button/))
  2169.         return;
  2170.  
  2171.       // Material Design
  2172.       if(cls.match(/ytd-playlist-(panel-)?video-renderer/))
  2173.         return;
  2174.  
  2175.       if(dom.attr(hNode.parentNode, "class") == "video-time")
  2176.         return;
  2177.  
  2178.       if(dom.html(hNode).match(/video-logo/i))
  2179.         return;
  2180.  
  2181.       var img = dom.gT(hNode, "img");
  2182.       if(img == null || img.length == 0)
  2183.         return;
  2184.  
  2185.       img = img[0];
  2186.  
  2187.       // /yts/img/pixel-*.gif is the placeholder image
  2188.       // can be null as well
  2189.       var imgSrc = dom.attr(img, "src") || "";
  2190.       if(imgSrc.indexOf("ytimg.com") < 0 && !imgSrc.match(/^\/yts\/img\/.*\.gif$/) && imgSrc != "")
  2191.         return;
  2192.  
  2193.       var tnSrc = dom.attr(img, "thumb") || "";
  2194.  
  2195.       if(imgSrc.match(/.+?\/([a-zA-Z0-9_-]*)\/(hq)?default\.jpg$/))
  2196.         videoId = RegExp.$1;
  2197.       else if(tnSrc.match(/.+?\/([a-zA-Z0-9_-]*)\/(hq)?default\.jpg$/))
  2198.         videoId = RegExp.$1;
  2199.       }
  2200.  
  2201.     //logMsg(idx + " " + href);
  2202.     //logMsg("videoId: " + videoId);
  2203.  
  2204.     list.push({ videoId: videoId, hNode: hNode });
  2205.  
  2206.     dom.attr(hNode, CSS_PREFIX + "processed", REQ_INFO);
  2207.     });
  2208.  
  2209.   forLoop({ num: list.length, inc: TAG_LINK_NUM_PER_BATCH, batchIdx: 0 }, function(idx) {
  2210.     var batchIdx = this.batchIdx++;
  2211.     var batchList = list.slice(idx, idx + TAG_LINK_NUM_PER_BATCH);
  2212.  
  2213.     setTimeout(function() {
  2214.       forEach(batchList, function(idx, elm) {
  2215.         //logMsg(batchIdx + " " + idx + " " + elm.hNode.href);
  2216.         getFmt(elm.videoId, elm.hNode);
  2217.         });
  2218.       }, INI_TAG_LINK_DELAY_MS + batchIdx * SUB_TAG_LINK_DELAY_MS);
  2219.     });
  2220.   };
  2221.  
  2222. Links.prototype.isTagDiv = function(node) {
  2223.   var cls = dom.attr(node, "class") || "";
  2224.   return cls.match(new RegExp("(^|\\s+)" + RegExp.escape(LINKS_HTML_ID) + "\\s+" + RegExp.escape(CSS_PREFIX + "quality") + "(\\s+|$)"));
  2225.   };
  2226.  
  2227. Links.prototype.invalidateTagLinks = function() {
  2228.   var me = this;
  2229.  
  2230.   if(!userConfig.tagLinks)
  2231.     return;
  2232.  
  2233.   forEach(dom.gT("a"), function(idx, hNode) {
  2234.     hNode.removeAttribute(CSS_PREFIX + "processed");
  2235.     });
  2236.  
  2237.   var nodes = dom.gT("div");
  2238.  
  2239.   for(var i = 0; i < nodes.length; ) {
  2240.     var hNode = nodes[i];
  2241.  
  2242.     if(me.isTagDiv(hNode))
  2243.       hNode.parentNode.removeChild(hNode);
  2244.     else
  2245.       ++i;
  2246.     }
  2247.   };
  2248.  
  2249. Links.prototype.periodicTagLinks = function(delayMs) {
  2250.   function poll() {
  2251.     me.tagLinks();
  2252.     me.tagLinksTimerId = setTimeout(poll, PERIODIC_TAG_LINK_DELAY_MS);
  2253.     }
  2254.  
  2255.   // Entry point
  2256.   if(!userConfig.tagLinks)
  2257.     return;
  2258.  
  2259.   var me = this;
  2260.  
  2261.   delayMs = delayMs || 0;
  2262.  
  2263.   if(me.tagLinksTimerId != null) {
  2264.     clearTimeout(me.tagLinksTimerId);
  2265.     delete me.tagLinksTimerId;
  2266.     }
  2267.  
  2268.   setTimeout(poll, delayMs);
  2269.   };
  2270.  
  2271. Links.prototype.getInsertPt = function() {
  2272.   if(dom.gE("page"))
  2273.     return "page";
  2274.   else if(dom.gE("columns")) // 2017 Material Design
  2275.     return "columns";
  2276.   else
  2277.     return "top";
  2278.   };
  2279.  
  2280. // -----------------------------------------------------------------------------
  2281.  
  2282. Links.prototype.loadSettings = function() {
  2283.   var obj = localStorage[STORE_ID];
  2284.   if(obj == null)
  2285.     return;
  2286.  
  2287.   obj = JSON.parse(obj);
  2288.  
  2289.   this.lastChkReqTs = +obj.lastChkReqTs;
  2290.   this.lastChkTs = +obj.lastChkTs;
  2291.   this.lastChkVer = +obj.lastChkVer;
  2292.   };
  2293.  
  2294. Links.prototype.storeSettings = function() {
  2295.   localStorage[STORE_ID] = JSON.stringify({
  2296.     lastChkReqTs: this.lastChkReqTs,
  2297.     lastChkTs: this.lastChkTs,
  2298.     lastChkVer: this.lastChkVer
  2299.     });
  2300.   };
  2301.  
  2302. // -----------------------------------------------------------------------------
  2303.  
  2304. var UPDATE_CHK_INTERVAL = 5 * 86400;
  2305. var FAIL_TO_CHK_UPDATE_INTERVAL = 14 * 86400;
  2306.  
  2307. Links.prototype.chkVer = function(forceFlag) {
  2308.   if(this.lastChkVer > relInfo.ver) {
  2309.     this.showNewVer({ ver: this.lastChkVer });
  2310.     return;
  2311.     }
  2312.  
  2313.   var now = timeNowInSec();
  2314.  
  2315.   //logMsg("lastChkReqTs " + this.lastChkReqTs + ", diff " + (now - this.lastChkReqTs));
  2316.   //logMsg("lastChkTs " + this.lastChkTs);
  2317.   //logMsg("lastChkVer " + this.lastChkVer);
  2318.  
  2319.   if(this.lastChkReqTs == null || now < this.lastChkReqTs) {
  2320.     this.lastChkReqTs = now;
  2321.     this.storeSettings();
  2322.     return;
  2323.     }
  2324.  
  2325.   if(now - this.lastChkReqTs < UPDATE_CHK_INTERVAL)
  2326.     return;
  2327.  
  2328.   if(this.lastChkReqTs - this.lastChkTs > FAIL_TO_CHK_UPDATE_INTERVAL)
  2329.     logMsg("Failed to check ver for " + ((this.lastChkReqTs - this.lastChkTs) / 86400) + " days");
  2330.  
  2331.   this.lastChkReqTs = now;
  2332.   this.storeSettings();
  2333.  
  2334.   unsafeWin[JSONP_ID] = this;
  2335.  
  2336.   var script = dom.cE("script");
  2337.   script.type = "text/javascript";
  2338.   script.src  = SCRIPT_UPDATE_LINK;
  2339.   dom.append(doc.body, script);
  2340.   };
  2341.  
  2342. Links.prototype.chkVerCallback = function(data) {
  2343.   delete unsafeWin[JSONP_ID];
  2344.  
  2345.   this.lastChkTs = timeNowInSec();
  2346.   this.storeSettings();
  2347.  
  2348.   //logMsg(JSON.stringify(data));
  2349.  
  2350.   var latestElm = data[0];
  2351.  
  2352.   if(latestElm.ver <= relInfo.ver)
  2353.     return;
  2354.  
  2355.   this.showNewVer(latestElm);
  2356.   };
  2357.  
  2358. Links.prototype.showNewVer = function(latestElm) {
  2359.   function getVerStr(ver) {
  2360.     var verStr = "" + ver;
  2361.  
  2362.     var majorV = verStr.substr(0, verStr.length - 4) || "0";
  2363.     var minorV = verStr.substr(verStr.length - 4, 2);
  2364.     return majorV + "." + minorV;
  2365.     }
  2366.  
  2367.   // Entry point
  2368.   this.lastChkVer = latestElm.ver;
  2369.   this.storeSettings();
  2370.  
  2371.   condInsertUpdateIcon();
  2372.  
  2373.   var aNode = dom.gE(UPDATE_HTML_ID);
  2374.  
  2375.   aNode.href = SCRIPT_LINK;
  2376.  
  2377.   if(latestElm.desc != null)
  2378.     dom.attr(aNode, "title", latestElm.desc);
  2379.  
  2380.   dom.html(aNode, dom.emitHtml("b", SCRIPT_NAME + " " + getVerStr(relInfo.ver)) +
  2381.    "<br>Click to update to " + getVerStr(latestElm.ver));
  2382.   };
  2383.  
  2384. // -----------------------------------------------------------------------------
  2385.  
  2386. var WAIT_FOR_READY_POLL_MS = 300;
  2387. var SCROLL_TAG_LINK_DELAY_MS = 200;
  2388.  
  2389. var inst;
  2390.  
  2391. function waitForReady() {
  2392.   function start() {
  2393.     inst = new Links();
  2394.  
  2395.     inst.init();
  2396.     inst.loadSettings();
  2397.     decryptSig.load();
  2398.  
  2399.     if(!userConfig.useDecUnits) {
  2400.       fmtSizeSuffix = [ "KiB", "MiB", "GiB" ];
  2401.       fmtSizeUnit = 1024;
  2402.       }
  2403.  
  2404.     dom.insertCss(CSS_STYLES);
  2405.  
  2406.     condInsertTooltip();
  2407.  
  2408.     if(loc.pathname.match(/\/watch/))
  2409.       inst.checkFmts();
  2410.  
  2411.     inst.periodicTagLinks();
  2412.  
  2413.     inst.chkVer();
  2414.     }
  2415.  
  2416.   // Entry point
  2417.   // 'content' is for Material Design
  2418.   if(dom.gE("page") || dom.gE("content") || dom.gE("top")) {
  2419.     start();
  2420.     return;
  2421.     }
  2422.  
  2423.   if(!dom.gE("top"))
  2424.     setTimeout(waitForReady, WAIT_FOR_READY_POLL_MS);
  2425.   }
  2426.  
  2427. var scrollTop = win.pageYOffset || doc.documentElement.scrollTop;
  2428.  
  2429. dom.addEvent(win, "scroll", function(e) {
  2430.   var newScrollTop = win.pageYOffset || doc.documentElement.scrollTop;
  2431.  
  2432.   if(Math.abs(newScrollTop - scrollTop) < 100)
  2433.     return;
  2434.  
  2435.   //logMsg("scroll by " + (newScrollTop - scrollTop));
  2436.  
  2437.   scrollTop = newScrollTop;
  2438.  
  2439.   if(inst)
  2440.     inst.periodicTagLinks(SCROLL_TAG_LINK_DELAY_MS);
  2441.   });
  2442.  
  2443. // -----------------------------------------------------------------------------
  2444.  
  2445. var CHK_MOUSE_IN_POPUP_POLL_MS = 1000;
  2446.  
  2447. var curMousePos = {};
  2448. var chkMouseInPopupTimer;
  2449.  
  2450. function trackMousePos(e) {
  2451.   curMousePos.x = e.pageX;
  2452.   curMousePos.y = e.pageY;
  2453.   }
  2454.  
  2455. dom.addEvent(window, "mousemove", trackMousePos);
  2456.  
  2457. function chkMouseInPopup() {
  2458.   chkMouseInPopupTimer = null;
  2459.  
  2460.   var toolTipNode = dom.gE(LINKS_TP_HTML_ID);
  2461.   if(!toolTipNode)
  2462.     return;
  2463.  
  2464.   var pos = dom.offset(toolTipNode);
  2465.   var rect = toolTipNode.getBoundingClientRect();
  2466.  
  2467.   //logMsg("mouse x " + curMousePos.x + ", y " + curMousePos.y);
  2468.   //logMsg("x " + Math.round(pos.left) + ", y " + Math.round(pos.top) + ", wd " + Math.round(rect.width) + ", ht " + Math.round(rect.height));
  2469.  
  2470.   if(curMousePos.x < pos.left || curMousePos.x >= pos.left + rect.width ||
  2471.    curMousePos.y < pos.top || curMousePos.y >= pos.top + rect.height) {
  2472.     dom.attr(toolTipNode, "style", "display: none;");
  2473.     return;
  2474.     }
  2475.  
  2476.   chkMouseInPopupTimer = setTimeout(chkMouseInPopup, CHK_MOUSE_IN_POPUP_POLL_MS);
  2477.   }
  2478.  
  2479. function startChkMouseInPopup() {
  2480.   stopChkMouseInPopup();
  2481.   chkMouseInPopupTimer = setTimeout(chkMouseInPopup, CHK_MOUSE_IN_POPUP_POLL_MS);
  2482.   }
  2483.  
  2484. function stopChkMouseInPopup() {
  2485.   if(!chkMouseInPopupTimer)
  2486.     return;
  2487.  
  2488.   clearTimeout(chkMouseInPopupTimer);
  2489.   chkMouseInPopupTimer = null;
  2490.   }
  2491.  
  2492. // -----------------------------------------------------------------------------
  2493.  
  2494. /* YouTube reuses the current page when the user clicks on a new video. We need
  2495.  to detect it and reload the formats. */
  2496.  
  2497. (function() {
  2498.  
  2499. var PERIODIC_CHK_VIDEO_URL_MS = 1000;
  2500. var NEW_URL_TAG_LINKS_DELAY_MS = 500;
  2501.  
  2502. var curVideoUrl = loc.toString();
  2503.  
  2504. function periodicChkVideoUrl() {
  2505.   var newVideoUrl = loc.toString();
  2506.  
  2507.   if(curVideoUrl != newVideoUrl && inst) {
  2508.     //logMsg(curVideoUrl + " -> " + newVideoUrl);
  2509.  
  2510.     curVideoUrl = newVideoUrl;
  2511.  
  2512.     inst.invalidateTagLinks();
  2513.     inst.periodicTagLinks(NEW_URL_TAG_LINKS_DELAY_MS);
  2514.  
  2515.     if(loc.pathname.match(/\/watch/))
  2516.       inst.checkFmts();
  2517.     else
  2518.       condRemoveHdr();
  2519.     }
  2520.  
  2521.   setTimeout(periodicChkVideoUrl, PERIODIC_CHK_VIDEO_URL_MS);
  2522.   }
  2523.  
  2524. periodicChkVideoUrl();
  2525.  
  2526. }) ();
  2527.  
  2528. // -----------------------------------------------------------------------------
  2529.  
  2530. waitForReady();
  2531.  
  2532. }) ();