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Youtube Always Play in Highest Quality Everywhere

Always play youtube videos in highest available quality, embedded ones too, everywhere.

当前为 2014-09-13 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name        Youtube Always Play in Highest Quality Everywhere
  3. // @description Always play youtube videos in highest available quality, embedded ones too, everywhere.
  4. // @namespace   YAPiHQ
  5. // @include     *
  6. // @run-at      document-start
  7. // @grant       none
  8. // @version     6.0.1
  9. // @license     GNU GPL v3
  10. // ==/UserScript==
  11.  
  12. //Tested with:
  13. // Firefox 24.0 with Greasemonkey 1.12
  14. // Chrome 30.0 with Tampermonkey  3.5
  15.  
  16. //SETTINGS
  17. //Change default quality level by setting the variable defaultQuality to one of the following values:
  18. //	small, medium, large, hd720, hd1080, highres
  19. // It's set to highres by default.
  20. // More information about the quality levels: https://developers.google.com/youtube/js_api_reference#Playback_quality
  21. var defaultQuality = "highres";
  22. //END OF SETTINGS
  23.  
  24. defaultQuality = verifyDefaultQuality(defaultQuality);
  25.  
  26. //console.log(window.location.href); //DEBUG
  27.  
  28. //On /v/ or /embed/ pages (loaded directly or via an iframe)
  29. if ((/^(https?\:\/\/(www\.)?youtube(-nocookie)?.com\/(v|embed|e)\/[a-zA-Z0-9+\-\_]{11})/).test(window.location.href)){
  30. 	//console.log("v/embed"); //DEBUG
  31. 	var nhref=window.location.href;
  32. 	var nhrefFragId = "";
  33.  
  34. 	//Split url by the the # fragment identifier into two parts for easier handling
  35. 	var rxFid = window.location.href.match(/^(.*?)#/);
  36. 	if (rxFid != null){
  37. 		nhref=rxFid[1];
  38. 		nhrefFragId=window.location.href.replace(nhref,"");
  39. 	}
  40. 	
  41. 	var rxVq = nhref.match(new RegExp("(\\?|\\&)vq=([^&]*)(\\&)?"));
  42. 	//If there is a vq parameter in the url and it's set to the value of defaultQuality, don't do anything
  43. 	if (!(rxVq != null && rxVq[2] === defaultQuality)){
  44. 		if (rxVq != null && rxVq[2] !== defaultQuality)
  45. 		{
  46. 			nhref = nhref.replace(new RegExp("(\\?|\\&)vq=[^&]*(\\&)?"),"$1vq=" +defaultQuality+ "$2");
  47. 		} else if (rxVq == null){
  48. 			nhref = nhref.replace(/^(https?\:\/\/(?:www\.)?youtube(?:-nocookie)?\.com\/(?:v|embed|e)\/[a-zA-Z0-9+\-\_]{11})\??/,"$1?vq=" +defaultQuality + "&");
  49. 		}
  50. 	}
  51. 	
  52. 	var rxAPI = nhref.match(new RegExp("(\\?|\\&)enablejsapi=([^&]*)(\\&)?"));
  53. 	//If there is an enablejsapi parameter in the url and it's set to  1, don't do anything
  54. 	if (!(rxAPI != null && rxAPI[2] === "1")){
  55. 		if (rxAPI != null && rxAPI[2] !== "1")
  56. 		{
  57. 			nhref = nhref.replace(new RegExp("(\\?|\\&)enablejsapi=[^&]*(\\&)?"),"$1enablejsapi=" +"1"+ "$2");
  58. 		} else if (rxAPI == null){
  59. 			nhref = nhref.replace(/^(https?\:\/\/(?:www\.)?youtube(?:-nocookie)?\.com\/(?:v|embed|e)\/[a-zA-Z0-9+\-\_]{11})\??/,"$1?enablejsapi=" + "1" + "&");
  60. 		}
  61. 	}
  62. 	if (nhref+nhrefFragId !== window.location.href)
  63. 		window.location = nhref + nhrefFragId;
  64. 	else {
  65. 		document.addEventListener('DOMContentLoaded', function(){
  66. 			//console.log("embed"); //DEBUG
  67.             var interval = setInterval(function(){
  68.                 var player = document.getElementById("player").childNodes[0];
  69.                 if (player != undefined){
  70.                     if(player.nodeName.toLowerCase() != "embed"){	
  71.                         //console.log("html5 embed"); //DEBUG
  72.                         ensureSetQuality(player);
  73.                     }
  74.                     clearInterval(interval);
  75.                 }
  76. 			},10);
  77. 		}, false);
  78. 	}
  79. //All the other pages
  80. } else {
  81. 	// Continue after the page is fully loaded
  82. 	document.addEventListener('DOMContentLoaded', execOnPageLoad, false);
  83. }
  84.  
  85. function execOnPageLoad(){
  86. 	//console.log("execOnPageLoad"); // DEBUG
  87. 	
  88. 	if ((/^(https?\:\/\/(www\.)?youtube.com\/(watch|user\/|channel\/))/).test(window.location.href)){
  89. 		//console.log("watch"); //DEBUG
  90. 		
  91. 		if (document.getElementById("gm-YAPiHQ") == null){
  92. 			var scr = document.createElement("script");
  93. 			scr.id = "gm-YAPiHQ";
  94. 			scr.innerHTML = 
  95. 				["var tag = document.createElement('script');",
  96. 				"tag.src = '//www.youtube.com/iframe_api';",
  97. 				"var firstScriptTag = document.getElementsByTagName('script')[0];",
  98. 				"firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);",
  99. 				"var ytplayer0;",
  100. 				"function onYouTubePlayerReady(playerId){",
  101. 				//"	console.log('onReady1');", //DEBUG
  102. 				"   ytplayer0 = window.top.document.getElementById('movie_player') || window.top.document.getElementById('movie_player-html5') || window.top.document.getElementById('movie_player-flash') || window.top.document.getElementById('video-player-flash') || window.top.document.getElementById('video-player');",
  103. 				"	ytplayer0.setPlaybackQuality('" + defaultQuality + "');",
  104. 				"	waitSetHQ();",
  105. 				"};",
  106. 				"function ytPlayerOnYouTubePlayerReady(playerId){",
  107. 				//"	console.log('onReady2');", //DEBUG
  108. 				"   ytplayer0 = window.top.document.getElementById('movie_player') || window.top.document.getElementById('movie_player-html5') || window.top.document.getElementById('movie_player-flash') || window.top.document.getElementById('video-player-flash') || window.top.document.getElementById('video-player');",
  109. 				"	ytplayer0.setPlaybackQuality('" + defaultQuality + "');",
  110. 				"	waitSetHQ();",
  111. 				"};",
  112. 				"var c;",
  113. 				"function waitSetHQ(wStart){",
  114. 				//"	console.log('WSHQ');", //DEBUG
  115. 				"	if (wStart==undefined)",
  116. 				"		wStart = new Date();",
  117. 				"   ytplayer0 = window.top.document.getElementById('movie_player') || window.top.document.getElementById('movie_player-html5') || window.top.document.getElementById('movie_player-flash') || window.top.document.getElementById('video-player-flash') || window.top.document.getElementById('video-player');",
  118. 				"  	ytplayer0.setPlaybackQuality('" + defaultQuality + "');",
  119. 				"	if (c==undefined){",
  120. 				//"		console.log(c);", //DEBUG
  121. 				"		c='" + defaultQuality + "';",
  122. 				"		var q = ['small','medium','large','hd720','hd1080','highres'];",
  123. 				"		var avq = ytplayer0.getAvailableQualityLevels();",
  124. 				"		for (var i=q.lastIndexOf('" + defaultQuality + "');i>=0;--i){",
  125. 				"			if (avq.lastIndexOf(q[i]) >= 0){",
  126. 				"				c=q[i];",
  127. 				"				break;",
  128. 				"			}", 
  129. 				"		}",
  130. 				"	}",
  131. 				"	if (c==ytplayer0.getPlaybackQuality()){",
  132. 				//"		console.log(c+' '+ytplayer0.getPlaybackQuality());", //DEBUG
  133. 				"		c=undefined;",
  134. 				"		return;",
  135. 				"   } else if ((new Date())-wStart<10000)",
  136. 				"      setTimeout(function(){waitSetHQ(wStart)},10);",
  137. 				"}",
  138. 				].join('\n');
  139. 			//console.log(scr.innerHTML); // DEBUG
  140. 			document.getElementsByTagName("body")[0].appendChild(scr);
  141. 		}
  142. 		var target = document.getElementById("player");
  143. 		var observer;
  144. 		try {
  145. 			observer = new MutationObserver(waitSetHQ); //Firefox (Gecko)
  146. 		} catch (e){
  147. 			observer = new WebKitMutationObserver(waitSetHQ); //Chrome (WebKit)
  148. 		}
  149. 		var config = { attributes: true, childList: false, characterData: true, subtree: false };
  150. 		observer.observe(target, config); // register observer
  151. 		
  152. 	} else if ((/^(https?\:\/\/(www\.)?youtube.com\/channels)/).test(window.location.href)){
  153. 	
  154. 		var target = document.body;
  155. 		var observer;
  156. 		try {
  157. 			observer = new MutationObserver(onChannelsMutation); //Firefox (Gecko)
  158. 		} catch (e){
  159. 			observer = new WebKitMutationObserver(onChannelsMutation); //Chrome (WebKit)
  160. 		}
  161. 		var config = { attributes: true, childList: true, characterData: true, subtree: true };
  162. 		observer.observe(target, config);
  163. 		
  164. 	//Everywhere else
  165. 	} else {
  166. 		searchAndReplace(); // Look for embedded videos
  167. 		
  168. 		// Keep watching for changes in page content, pass changed/inserted nodes to searchAndReplace()
  169. 		// https://developer.mozilla.org/en-US/docs/DOM/MutationObserver
  170. 		var target = document.body;
  171. 		var observer;
  172. 		try {
  173. 			observer = new MutationObserver(onMutation); //Firefox (Gecko)
  174. 		} catch (e){
  175. 			observer = new WebKitMutationObserver(onMutation); //Chrome (WebKit)
  176. 		}
  177. 		var config = { attributes: true, childList: true, characterData: true, subtree: true };
  178. 		observer.observe(target, config); // register observer
  179. 	}
  180. }
  181.  
  182. //Caller must make sure that videoObj.setPlaybackQuality will be defined at some point, 
  183. // if not, the function will keep calling itself every 100ms on videoObj until the 10s timeout.
  184. function ensureSetQuality(videoObj,highestAQ,firstCalledAt){
  185. 	//console.log("ensureSetQuality()" + firstCalledAt); //DEBUG
  186. 	if (firstCalledAt==undefined)
  187. 		firstCalledAt = new Date();
  188. 	else if ((new Date()-firstCalledAt) > 10000)
  189. 		return;
  190. 	if (typeof(videoObj.setPlaybackQuality) == "function"){
  191. 		videoObj.setPlaybackQuality(defaultQuality);
  192. 		if (videoObj.getPlayerState() == 1 || videoObj.getPlayerState() == 3)
  193. 			videoObj.playVideo(); // to avoid reload glitch after pausing/starting again
  194. 		
  195. 		//Store the defaultQuality or the next highest available quality in highestAQ
  196. 		if (highestAQ==undefined){
  197. 			var q = ["small","medium","large","hd720","hd1080","highres"];
  198. 			for (var i=q.lastIndexOf(defaultQuality);i>=0;--i){
  199. 				if ((videoObj.getAvailableQualityLevels()).lastIndexOf(q[i]) >= 0){
  200. 					highestAQ=q[i];
  201. 					break;
  202. 				} 
  203. 			}
  204. 		}
  205. 		if (videoObj.getPlaybackQuality() != highestAQ){
  206. 			setTimeout(function(){ensureSetQuality(videoObj,highestAQ,firstCalledAt)},100)
  207. 		} 
  208. 	} else
  209. 		setTimeout(function(){ensureSetQuality(videoObj,highestAQ,firstCalledAt)},100);
  210. }
  211.  
  212. function onChannelsMutation(mutations){
  213. 	mutations.forEach(function(mutation) {
  214. 		if (mutation.type === "attributes"){
  215. 			if (mutation.target.nodeName.toLowerCase() == "embed"){
  216. 				if (typeof(mutation.target.setPlaybackQuality == "function")){
  217. 					//console.log("attr hit"); //DEBUG
  218. 					ensureSetQuality(ensureSetQuality);
  219. 				}
  220. 			}
  221. 		} else if (mutation.type === "childList"){
  222. 			for (var i=0;i<mutation.addedNodes.length;++i)
  223. 				if (mutation.addedNodes[i].nodeName.toLowerCase() == "embed"){
  224. 					if (typeof(mutation.addedNodes[i].setPlaybackQuality == "function")){
  225. 						//console.log("added hit"); //DEBUG
  226. 						ensureSetQuality(mutation.addedNodes[i]);
  227. 				}
  228. 			}
  229. 		}
  230. 	});    
  231. }
  232.  
  233. function onMutation(mutations){
  234. 	var significantNodes = [];
  235. 	mutations.forEach(function(mutation) {
  236. 		//console.log(mutation.type); // DEBUG
  237. 		if (mutation.type === "attributes"){
  238. 			significantNodes[significantNodes.length] = mutation.target;
  239. 		} else if (mutation.type === "childList"){
  240. //			console.log("onMutation: childList"); //DEBUG
  241. 			for (var i=0;i<mutation.addedNodes.length;++i)
  242. 				significantNodes[significantNodes.length] = mutation.addedNodes[i];
  243. 		}
  244. 	});    
  245. 	//console.log("significantNodes length: " + significantNodes.length); // DEBUG
  246. 	if (significantNodes.length>0)
  247. 		searchAndReplace(significantNodes);
  248. }
  249.  
  250. function recAddToArr(obj,array){
  251. 	array.push(obj);
  252. }
  253.  
  254. function onMutation(mutations){
  255. 	var significantNodes = [];
  256. 	mutations.forEach(function(mutation) {
  257. 		//console.log(mutation.type); // DEBUG
  258. 		if (mutation.type === "attributes"){
  259. 			significantNodes[significantNodes.length] = mutation.target;
  260. 		} else if (mutation.type === "childList"){
  261. //			console.log("onMutation: childList"); //DEBUG
  262. 			for (var i=0;i<mutation.addedNodes.length;++i)
  263. 				significantNodes[significantNodes.length] = mutation.addedNodes[i];
  264. 		}
  265. 	});    
  266. 	//console.log("significantNodes length: " + significantNodes.length); // DEBUG
  267. 	if (significantNodes.length>0)
  268. 		searchAndReplace(significantNodes);
  269. }
  270.  
  271. function searchAndReplace(pNodes){
  272. //	console.log("searchAndReplace()"); //DEBUG
  273. if (typeof pNodes == "object")	//if searchAndReplace() was called because the page content changed and the function received the changed nodes
  274. 	{
  275. //		console.log("searchAndReplace(pNodes) : " + pNodes.length); // DEBUG
  276. 		for (var i=0;i<pNodes.length;++i){
  277. //			console.log(pNodes[i].nodeName.toLowerCase());
  278. //			console.log(pNodes[i].getElementsByTagName("object").length); //DEBUG
  279. 			
  280. 			if ((/^embed$/i).test(pNodes[i].nodeName)){
  281. //				console.log("embed mutation"); //DEBUG
  282. 				var embedSrc = pNodes[i].getAttribute("src");
  283. 				if (!embedSrc)
  284. 					continue;
  285. //				console.log("embedSrc: " + embedSrc); //DEBUG
  286. 				var replaceUrl = replaceSrc(embedSrc);
  287. 				if (embedSrc != replaceUrl)
  288. 					pNodes[i].setAttribute("src",replaceUrl);
  289. 			} else if ((/^object$/i).test(pNodes[i].nodeName)){
  290. 				var objectData = pNodes[i].getAttribute("data");
  291. 				if (!objectData)
  292. 					continue;
  293. //				console.log("objectData: " + objectData); //DEBUG
  294. 				var replaceUrl = replaceSrc(objectData);
  295. 				if (objectData != replaceUrl)
  296. 					pNodes[i].setAttribute("data",replaceUrl);
  297. 				var objectChildren = pNodes[i].getElementsByTagName("param");
  298. 				for (var j=0;j<objectChildren.length;++j){
  299. 					if (objectChildren[j].getAttribute("name") != "movie")
  300. 						continue;
  301. 					var paramMovie = objectChildren[j].getAttribute("value");
  302. 					if (paramMovie){
  303. //						console.log("paramMovie: " + paramMovie); //DEBUG
  304. 						var replaceUrl = replaceSrc(paramMovie);
  305. 						if (paramMovie != replaceUrl)
  306. 							objectChildren[j].setAttribute("movie",replaceUrl);
  307. 					} // if
  308. 				} // for j
  309. 			} // else if
  310. 		} // for i
  311. 	} else {
  312. 		//console.log("searchAndReplace()"); // DEBUG
  313.  
  314. 		var lElems = new Array();
  315. 		lElems["object"] = "data";
  316. 		lElems["embed"] = "src";
  317. 		lElems["param"] = "value";
  318.  
  319. 		for (var cTag in lElems){
  320. 			var cParam = lElems[cTag];
  321. 			var tagArr = document.getElementsByTagName(cTag);
  322. 			for (var i=0;i<tagArr.length;++i){
  323. 				var tagParam = tagArr[i].getAttribute(cParam);
  324. 				if (!tagParam
  325.                     || (cTag == "param" && tagArr[i].getAttribute("name") != "movie"))
  326. 						continue;
  327. 				var replaceUrl = replaceSrc(tagParam);
  328. 				if (tagParam != replaceUrl)
  329. 					tagArr[i].setAttribute(cParam,replaceUrl);
  330. 			} // for i 
  331. 		} //for key
  332. 	} // else
  333. }
  334.  
  335. function replaceSrc(src){
  336. 	if ((/^(https?\:\/\/(www\.)?youtube(-nocookie)?\.com\/(v|e)\/[a-zA-Z0-9+\-\_]{11})/).test(src)){
  337. 		if ((new RegExp("(\\?|\\&)vq=[^#^&]*(\\#|\\&)?")).test(src))
  338. 			src = src.replace(new RegExp("(\\?|\\&)vq=[^#^&]*(\\#|\\&)?"),"$1vq=" +defaultQuality+ "$2");
  339. 		else 
  340. 			src = src.replace(/^(https?\:\/\/(www\.)?youtube(-nocookie)?\.com\/(v|e)\/[a-zA-Z0-9+\-\_]{11})\??/,"$1?vq=" +defaultQuality + "&");
  341. 	}
  342. 	return src;
  343. }
  344.  
  345. function verifyDefaultQuality(quality){
  346. 	if (["small","medium","large","hd720","hd1080","highres"].indexOf(quality) < 0)
  347. 		return "highres";
  348. 	return quality;
  349. }