Youtube Video Download Linker

A video download linker for youtube. Provides download links on youtube video pages. Does not need javascript enabled for youtube.com (NoScript compatible), does not use a third-party website, and does not use unsafeWindow.

您需要先安裝使用者腳本管理器擴展,如 TampermonkeyGreasemonkeyViolentmonkey 之後才能安裝該腳本。

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyViolentmonkey 後才能安裝該腳本。

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyViolentmonkey 後才能安裝該腳本。

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyUserscripts 後才能安裝該腳本。

你需要先安裝一款使用者腳本管理器擴展,比如 Tampermonkey,才能安裝此腳本

您需要先安裝使用者腳本管理器擴充功能後才能安裝該腳本。

(我已經安裝了使用者腳本管理器,讓我安裝!)

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

(我已經安裝了使用者樣式管理器,讓我安裝!)

// ==UserScript==
// @name           Youtube Video Download Linker
// @namespace      http://www.digivill.net/~joykillr
// @description    A video download linker for youtube.  Provides download links on youtube video pages.  Does not need javascript enabled for youtube.com (NoScript compatible), does not use a third-party website, and does not use unsafeWindow.
// @version        2.4b3
// @grant          GM_addStyle
// @include        http://*.youtube.com/watch*
// @include        http://youtube.com/watch*
// @include        https://*.youtube.com/watch*
// @include        https://youtube.com/watch*
// ==/UserScript==

//v 2.4b3r

var nasp, spec, fmtvar, titlevar, newa2 = "", scrhead = document.getElementsByTagName("script");
/*
var acceptargs = new Array("algorithm", "burst", "clen", "codecs", "cp", "dur", "expire", "factor", "fallback_host", "fexp", "fmt", "fmt_map", "gcr", "gir", "id", "initcwndbps", "ipbits", "ip", "itag", "iv_load_policy", "key", "lmt", "mime", "mm", "ms", "mv", "mt", "newshard", "nh", "pcm2fr", "pl", "pltype", "quality", "ratebypass", "requiressl", "s", "sparams", "source", "sig", "signature", "sver", "title", "type", "upn" );
*/
var formats = {
	5:  { itag: 5, quality: 5, description: "Low Quality, 240p", format: "FLV", fres: "240p", 	mres: { width:  400, height:  240 }, acodec: "MP3", vcodec: "SVQ"},
	17: { itag: 17, quality: 4, description: "Low Quality, 144p", format: "3GP", fres: "144p", mres: { width:  0, height: 0  }, acodec: "AAC", vcodec: ""},
	18: { itag: 18, quality: 15, description: "Low Definition, 360p", format: "MP4", fres: "360p", mres: { width:  480, height:  360 }, acodec: "AAC", vcodec: "H.264"},
	22: { itag: 22, quality: 35, description: "High Definition, 720p", format: "MP4", fres: "720p",	mres: { width: 1280, height:  720 }, acodec: "AAC", vcodec: "H.264"},
	34: { itag: 34, quality: 10, description: "Low Definition, 360p", format: "FLV", fres: "360p", 	mres: { width:  640, height:  360 }, acodec: "AAC", vcodec: "H.264"},
	35: { itag: 35, quality: 25, description: "Standard Definition, 480p", format: "FLV" , fres: "480p", mres: { width:  854, height:  480 }, acodec: "AAC", vcodec: "H.264"},
	36: { itag: 36, quality: 6, description: "Low Quality, 240p", format: "3GP", fres: "240p", 	mres: { width:  0, height:  0 }, acodec: "AAC", vcodec: ""},
	37: { itag: 37, quality: 45, description: "Full High Definition, 1080p", format: "MP4", fres: "1080p", mres: {width: 1920, height: 1080}, acodec: "AAC", vcodec: "H.264"},
	38: { itag: 38, quality: 55, description: "Original Definition", format: "MP4" , fres: "Orig",	mres: { width: 4096, height: 3072 }, acodec: "AAC", vcodec: "H.264"},
	43: { itag: 43, quality: 20, description: "Low Definition, 360p", format: "WebM", fres: "360p",	mres: { width:  640, height:  360 }, acodec: "Vorbis", vcodec: "VP8"},
	44: { itag: 44, quality: 30, description: "Standard Definition, 480p", format: "WebM", fres: "480p", mres: { width:  854, height:  480 }, acodec: "Vorbis", vcodec: "VP8"},
	45: { itag: 45, quality: 40, description: "High Definition, 720p", format: "WebM", fres: "720p", mres: { width: 1280, height:  720 }, acodec: "Vorbis", vcodec: "VP8"},
	46: { itag: 46, quality: 50, description: "Full High Definition, 1080p", format: "WebM", fres: "1080p",	mres: {width: 1280, height: 720}, acodec: "Vorbis", vcodec: "VP8"},
	82: { itag: 82, quality: 16, description: "Low Definition 3D, 360p", format: "MP4",  fres: "360p", mres: { width: 640,  height:  360 }, acodec: "AAC", vcodec: "H.264"},
	84: { itag: 84, quality: 41, description: "High Definition 3D, 720p", format: "MP4",  fres: "720p",	mres: { width: 1280, height:  720 }, acodec: "AAC", vcodec: "H.264"},
	100: { itag: 100, quality: 17, description: "Low Definition 3D, 360p", format: "WebM", fres: "360p", mres: { width: 640,  height:  360 }, acodec: "Vorbis", vcodec: "VP8"},
	102: { itag: 102, quality: 42, description: "High Definition 3D, 720p", format: "WebM", fres: "720p", mres: {width: 1280, height: 720}, acodec: "Vorbis", vcodec: "VP8"},
	133: { itag: 133, description: "", format: "", fres: "240p", acodec: "", vcodec: ""},
	134: { itag: 134,  description: "", format: "", fres: "360p", acodec: "", vcodec: ""},
	135: { itag: 135, description: "MP4 480p - no audio", format: "MP4", fres: "480p", acodec: "", vcodec: ""},
	136: { itag: 136,  description: "", format: "", fres: "720p", acodec: "", vcodec: ""},
	137: { itag: 137, description: "MP4 1080p - no audio", format: "MP4", fres: "1080p", acodec: "", vcodec: ""},
	138: { itag: 138, description: "MP4 2160p - no audio", format: "MP4", fres: "2160p", acodec: "", vcodec: ""},
	140: { itag: 140, description: "M4A 128kbps - audio", format: "m4a", fres: "", acodec: "", vcodec: ""},
	141: { itag: 141, description: "M4A 256kbps - audio", format: "m4a", fres: "", acodec: "", vcodec: ""},
	160: { itag: 160, description: "", format: "", fres: "",  acodec: "", vcodec: ""},
	264: { itag: 264, description: "MP4 1440p - no audio", format: "MP4", fres: "1440p",  acodec: "", vcodec: ""},
	298: { itag: 298, description: "MP4 720p 60fps - no audio", format: "MP4", fres: "720p",  acodec: "", vcodec: ""},
	299: { itag: 299, description: "MP4 1080p 60fps - no audio", format: "MP4", fres: "1080p",  acodec: "", vcodec: ""}
	}
	
var wclh = window.content.location.href.toString();

var newstyle = "#yt-masthead-content {max-width:150%!important;} #browser-upgrade-box, #browser-upgrade-outer-box {display: none !important; visibility: hidden !important;}";

if (document.getElementById("eow-title")) {
	titlevar = parseTV(document.getElementById("eow-title").textContent.toString());
} else if (document.getElementById("watch-headline-title")&&document.getElementById("watch-headline-title").childNodes[1].innerHTML.toString()) {
	titlevar = parseTV(document.getElementById("watch-headline-title").childNodes[1].textContent.toString());
} else {
	titlevar = "Download_Video_Link";
}
	
function addBox(strR) {
	var ac = "", vc = "", qtype = "", qual = "", spec = "";
	if (strR.split("itag=")) {
		spec = parseInt(strR.split("itag=")[1].split("&")[0]);
		if (spec&&formats[spec]&&formats[spec].description!=""&&formats[spec].description!=null) {
			ac = formats[spec].acodec;
			vc = formats[spec].vcodec;
			spec = formats[spec].description;
		}
	}
	if (strR.indexOf("quality=")!=-1) {qual = strR.split("quality=")[1].split("&")[0];}
	if (strR.indexOf("type=video/")!=-1) {qtype = strR.split("type=video/")[1].split("&")[0];}
	else if (strR.indexOf("type=")!=-1) {qtype = strR.split("type=")[1].split("&")[0];}
	if (qtype&&qtype.indexOf(";")!=-1) {qtype = qtype.split(";")[0];}
	var NewDLBox = document.createElement("span");
	var NewDLHref = document.createElement("a");
	var NewDLLabel = document.createElement("span");
	NewDLLabel.className="yt-uix-button-content";
	NewDLLabel.textContent="Download";
	NewDLHref.className='yt-uix-button yt-uix-sessionlink yt-uix-button-hh-default yt-uix-button-default';
	NewDLHref.href = strR+"&title="+titlevar;
	NewDLHref.setAttribute("title", "Download "+ spec + " " + qual + " " + vc + "\/" + ac + " " + qtype);
	NewDLBox.className = "";
	NewDLBox.id='masthead-download-button-group';
	NewDLHref.appendChild(NewDLLabel);
	NewDLBox.appendChild(NewDLHref);
	document.getElementById("yt-masthead-content").appendChild(NewDLBox);
}

function parseTV(h) {
	h = unescape(h);
	h = h.replace(/\W/g,"_").replace(/\_+/g,"_").replace("_amp_", "_and_");
	while (!h.charAt(0).match(/[a-zA-Z0-9]/i)&&h.length>1) {h = h.substr(1);}
	while (h.length>1&&!h.charAt(h.length-1).match(/[a-zA-Z0-9]/i)) {h = h.substring(0,h.length-1);}
	return(h);
}

function getSType(spec) {
	return formats[spec].quality;
}

function procURLS(nasp) {
	nasp = cleanArray(nasp);
	for (x=0;x<nasp.length;x++) {
		var newalink = unescape(nasp[x]);
		if (newalink.indexOf("http")==-1) { nasp.splice(x,1); }
	}
	for (x=0;x<nasp.length;x++) {
		var nchkend = "", nlink = "", nchk = "", ny = "", narray = new Array();
		nasp[x] = unescape(unescape(nasp[x]));
		narray = nasp[x].split("&");
		narray = cleanArray(narray);
		for (y=0;y<narray.length;y++) {
			ny = narray[y];
			if (ny!=null&&ny!=""&&ny.match(/url\=/i)!=-1&&ny.indexOf("?")!=-1) {
				nlink = unescape(ny.split("url=")[1]);
				narray.splice(y,1);
				break;
			}
			ny = ""; 
		}

		for (var nx=0; nx<narray.length; nx++) {
			if (narray[nx].split("=")) {
				nchk = narray[nx].split("=")[0];
				var specific = "";
				nchkend = narray[nx].indexOf("=");
				nchkend = narray[nx].substr(nchkend+1);
				//if (acceptargs.indexOf(nchk)!=-1 && nlink.indexOf("&"+nchk+"=")==-1 && nlink.indexOf("?"+nchk+"=")==-1) {  //for compatibility, no longer checking against accepted arguments
				if (nlink.indexOf("&"+nchk+"=")==-1 && nlink.indexOf("?"+nchk+"=")==-1) {
					if (nchk.match(/fallback_host$/i)) {
						var nrxp = new RegExp("^(http|https)\:\/\/.{0,}\.(com|net)","i");
						if (nlink.indexOf("videoplayback")==-1&&nlink.match(nrxp)) {
						}
					}
					else if (nchk.match(/signature$/i)) {
						nlink+="&signature=" + nchkend; 
					}
					else if (nchk.match(/sig$/i)&&nlink.indexOf("?signature=")==-1&&nlink.indexOf("&signature=")==-1) {
						nlink+="&signature=" + nchkend; 
					}
					else if (nchk.length==1&&nchk.match(/s$/i)&&nlink.indexOf("?signature=")&&nlink.indexOf("&signature=")==-1) {
						alert(static_decrypt_signature(nchkend).length);
						nlink+="&signature=" + static_decrypt_signature(nchkend);
					}
					else if (nchk.match(/type$/i)||nchk.match(/quality$/i)) {
						nlink = nlink+"&"+nchk+"="+encodeURIComponent(nchkend);
					} else {
						nlink+="&"+nchk+"="+nchkend;
					}
				}
			}
		}
		if (nlink!=null&&nlink!="") {
			if (nlink.indexOf("requiressl")!=-1 && nlink.indexOf("requiressl=")==-1) {
				nlink+="&requiressl=yes";
			}
			addBox(decodeURIComponent(nlink));
		}
	}
}

function cleanArray(act){
	var newAr = new Array();
	for(var x = 0; x<act.length; x++){
		if (act[x]){
			newAr.push(act[x].toString());
		}
	}
	return newAr;
}

function cleanJSON(jsn) {
	if (jsn.charAt(0)!="{") {jsn = jsn.substring(jsn.indexOf('{'));}
	while (jsn.charAt(jsn.length-1).match(/\s/)) {jsn = jsn.substring(0,jsn.length-2);}
	if (jsn.indexOf("},")!=-1) {jsn = jsn.split('},')[0] + '}'}
	try {var jda = eval(JSON.parse(jsn))}
		catch(err) {
		while (!jsn.charAt(jsn.length-1).match(/\}/)) {jsn = jsn.substring(0,jsn.length-2);}
		var jda = eval(JSON.parse(jsn));
	}
	return jda;
}

function runIt(a1) {
	for (var b3=0; b3<a1.length; b3++) {
		if (a1[b3].innerHTML.match(/yt.playerConfig\ \=/gi)||a1[b3].innerHTML.match(/ytplayer.config\ \=/gi)) {
			var jsn = a1[b3].innerHTML.toString();
			if (jsn.match(/ytplayer.config\ \=/gmi)) {
				jsn = jsn.split('ytplayer.config\ =')[1];
				jsnaf = '{"adaptive_fmts' + jsn.split("adaptive_fmts")[1];
				jsnsm = '{"url_encoded_fmt_stream_map' + jsn.split("url_encoded_fmt_stream_map")[1];
			}
			var dat ="";
			jdata = cleanJSON(jsnsm);
			try { var dat = jdata.args.url_encoded_fmt_stream_map }
			catch(err) {try { var dat = jdata.url_encoded_fmt_stream_map } catch(err){}}
			dat = dat.replace(/\"/g,"\%22").replace(/\,\+/g,"%2C%2B");
			if (dat.indexOf(",")!=-1) {dat = dat.split(",")}
			procURLS(dat);
			
			var dat ="";
			jdata = cleanJSON(jsnaf);
			try { var dat = jdata.args.adaptive_fmts }
			catch(err) {try { var dat = jdata.adaptive_fmts } catch(err){}}
			
			dat = dat.replace(/\"/g,"\%22").replace(/\,\+/g,"%2C%2B");
			if (dat.indexOf(",")!=-1) {dat = dat.split(",")}
			procURLS(dat);
		}
	}
}

if (typeof GM_addStyle === 'function') {
	GM_addStyle(newstyle);
} else if (document.getElementsByTagName("style")[0]) {
	document.getElementsByTagName("style")[0]+=newstyle;
}

function setCook() {
	if (window.navigator.cookieEnabled) {
		document.cookie = "GEO=;domain=.youtube.com;path=/"; 
		//document.cookie = "use_hitbox=;"; 
		document.cookie = "VISITOR_INFO1_LIVE=;domain=.youtube.com;path=/"; 
		//document.cookie = "recently_watched_video_id_list=;"
		document.cookie = "YSC=;domain=.youtube.com;path=/";
	}
}

function reverse(s){
    return s.split("").reverse().join("");
}

function static_decrypt_signature(s, age_gate) {
	if (age_gate) {
		if (s.length==86) {
		//	return s[2:63] + s[82] + s[64:82] + s[63];
		return s.substring(2,63) + s.substr(82,1) + s.substring(64,82) + s.substr(63,1);
		}
	}
	if (s.length==93) {
		s = reverse(s);
		//return s[86:29:-1] + s[88] + s[28:5:-1];
		return s.substring(7,64) + s.substr(5,1) + s.substring(65,88);
	} else if(s.length==92) {
	//	return s[25] + s[3:25] + s[0] + s[26:42] + s[79] + s[43:79] + s[91] + s[80:83];
		return s.substr(25,1) + s.substring(3,25) + s.substr(0,1) + s.substring(26,42) + s.substr(79,1) + s.substring(43,79) + s.substr(91,1) + s.substring(80,83);
	} else if(s.length==91) {
		s = reverse(s);
	//return s;
	//	return s[84:27:-1] + s[86] + s[26:5:-1];
		return s.substring(7,64) + s.substr(5,1) + s.substring(65,86);
	} else if(s.length==90) {
	//	return s[25] + s[3:25] + s[2] + s[26:40] + s[77] + s[41:77] + s[89] + s[78:81];
		return s.substr(25,1) + s.substring(3,25) + s.substr(2,1) + s.substring(26,40) + s.substr(77,1) + s.substring(41,77) + s.substr(89,1) + s.substring(78,81);
	} else if(s.length==89) {
		s = reverse(s);
	//	return s[84:78:-1] + s[87] + s[77:60:-1] + s[0] + s[59:3:-1];
		return s.substring(5,11) + s.substr(2,1) + s.substring(12,29) + s.substr(89,1) + s.substring(30,86);
	} else if(s.length==88) {
	//	return s[7:28] + s[87] + s[29:45] + s[55] + s[46:55] + s[2] + s[56:87] + s[28];
		return s.substring(7,28) + s.substr(87,1) + s.substring(29,45) + s.substr(55,1) + s.substring(46,55) + s.substr(2,1) + s.substring(56,87) + s.substr(28,1);
	} else if(s.length==87) {
	//	return s[6:27] + s[4] + s[28:39] + s[27] + s[40:59] + s[2] + s[60:];
		return s.substring(6,27) + s.substr(4,1) + s.substring(28,39) + s.substr(27,1) + s.substring(40,59) + s.substr(2,1) + s.substring(60);
	} else if(s.length==86) {
		s = reverse(s);
	//	return s[80:72:-1] + s[16] + s[71:39:-1] + s[72] + s[38:16:-1] + s[82] + s[15::-1];
		return s.substring(6,14)+s.substr(70,1)+s.substring(15,47)+s.substr(14,1)+s.substring(48,70)+s.substr(4,1)+s.substring(71);
	} else if(s.length==85) {
		//return s[3:11] + s[0] + s[12:55] + s[84] + s[56:84];
		return s.substring(3,11)+s.subtr(0,1)+s.substring(12,55)+s.subtr(84,1)+s.substring(56,84);
	} else if(s.length==84) {
		//return s[78:70:-1] + s[14] + s[69:37:-1] + s[70] + s[36:14:-1] + s[80] + s[:14][::-1];
		s = reverse(s);
		return s.substring(6,14)+s.substr(70,1)+s.substring(15,47)+s.substr(14,1)+s.substring(48,70)+s.substr(4,1)+s.substring(70)+s.substr(0,1);
	} else if(s.length==83) {
		s = reverse(s);
	//	return s[80:63:-1] + s[0] + s[62:0:-1] + s[63];
		return s.substring(3,20)+s.substr(83,1)+s.substring(21,83)+s.substr(20,1);
	} else if(s.length==82) {
		s = reverse(s);
	//	return s[80:37:-1] + s[7] + s[36:7:-1] + s[0] + s[6:0:-1] + s[37];
		return s.substring(2,45)+s.substr(75,1)+s.substring(46,75)+s.substr(82,1)+s.substring(76,82)+s.substr(45,1);
	} else if(s.length==81) {
		s = reverse(s);
	//	return s[56] + s[79:56:-1] + s[41] + s[55:41:-1] + s[80] + s[40:34:-1] + s[0] + s[33:29:-1] + s[34] + s[28:9:-1] + s[29] + s[8:0:-1] + s[9];
		return s.substr(25,1)+s.substring(2,25)+s.substr(40,1)+s.substring(26,40)+s.substr(1,1)+s.substring(41,47)+s.substr(81,1)+s.substring(48,52)+s.substr(47,1)+s.substring(53,72)+s.substr(52,1)+s.substring(73,81)+s.substr(72,1);
		//return s;
	} else if(s.length==80) {
	//	return s[1:19] + s[0] + s[20:68] + s[19] + s[69:80];
		return s.substring(1,19)+s.substr(0,1)+s.substring(20,68)+s.substr(19,1)+s.substring(69,80);
	} else if(s.length==79) {
		s = reverse(s);
	//	return s[54] + s[77:54:-1] + s[39] + s[53:39:-1] + s[78] + s[38:34:-1] + s[0] + s[33:29:-1] + s[34] + s[28:9:-1] + s[29] + s[8:0:-1] + s[9];	
		return s.substr(25,1)+s.substring(2,25)+s.substr(40,1)+s.substring(26,40)+s.substr(1,1)+s.substring(41,45)+s.substr(79,1)+s.substring(46,50)+s.substr(45,1)+s.substring(51,70)+s.substr(50,1)+s.substring(71,79)+s.substr(70,1);
	}
}
	
if (scrhead!=null&&scrhead!=""&&(wclh.indexOf("/watch?")!=-1)) {
	setCook();
	var dldiv = document.createElement("div");
	dldiv.setAttribute("style","text-align: center!important; margin-left: auto!important; margin-right: auto!important; width:auto; height:auto;");
	var dltable = document.createElement("table");
	dltable.innerHTML = '<tbody style="text-align: center!important; margin-left: auto!important; margin-right: auto!important;"><tr><td id="gmdltd" style="margin-left: auto!important; margin-right: auto!important; text-align: center!important;"></td></tr></tbody>';
	dltable.id  = "gmdltable";
	dltable.setAttribute("style","text-align: center!important; display: none; visibility: hidden;");
	dldiv.appendChild(dltable);
	if (document.getElementById("pagetop")) {document.getElementById("pagetop").appendChild(dldiv); } else {document.body.insertBefore(dldiv, document.body.firstChild);}
	runIt(scrhead);
	setCook();
}