Always play youtube videos in highest available quality, embedded ones too, everywhere.
// ==UserScript==
// @name Youtube Always Play in Highest Quality Everywhere
// @description Always play youtube videos in highest available quality, embedded ones too, everywhere.
// @namespace YAPiHQ
// @include *
// @run-at document-start
// @grant none
// @version 6.0.1
// @license GNU GPL v3
// ==/UserScript==
//Tested with:
// Firefox 24.0 with Greasemonkey 1.12
// Chrome 30.0 with Tampermonkey 3.5
//SETTINGS
//Change default quality level by setting the variable defaultQuality to one of the following values:
// small, medium, large, hd720, hd1080, highres
// It's set to highres by default.
// More information about the quality levels: https://developers.google.com/youtube/js_api_reference#Playback_quality
var defaultQuality = "highres";
//END OF SETTINGS
defaultQuality = verifyDefaultQuality(defaultQuality);
//console.log(window.location.href); //DEBUG
//On /v/ or /embed/ pages (loaded directly or via an iframe)
if ((/^(https?\:\/\/(www\.)?youtube(-nocookie)?.com\/(v|embed|e)\/[a-zA-Z0-9+\-\_]{11})/).test(window.location.href)){
//console.log("v/embed"); //DEBUG
var nhref=window.location.href;
var nhrefFragId = "";
//Split url by the the # fragment identifier into two parts for easier handling
var rxFid = window.location.href.match(/^(.*?)#/);
if (rxFid != null){
nhref=rxFid[1];
nhrefFragId=window.location.href.replace(nhref,"");
}
var rxVq = nhref.match(new RegExp("(\\?|\\&)vq=([^&]*)(\\&)?"));
//If there is a vq parameter in the url and it's set to the value of defaultQuality, don't do anything
if (!(rxVq != null && rxVq[2] === defaultQuality)){
if (rxVq != null && rxVq[2] !== defaultQuality)
{
nhref = nhref.replace(new RegExp("(\\?|\\&)vq=[^&]*(\\&)?"),"$1vq=" +defaultQuality+ "$2");
} else if (rxVq == null){
nhref = nhref.replace(/^(https?\:\/\/(?:www\.)?youtube(?:-nocookie)?\.com\/(?:v|embed|e)\/[a-zA-Z0-9+\-\_]{11})\??/,"$1?vq=" +defaultQuality + "&");
}
}
var rxAPI = nhref.match(new RegExp("(\\?|\\&)enablejsapi=([^&]*)(\\&)?"));
//If there is an enablejsapi parameter in the url and it's set to 1, don't do anything
if (!(rxAPI != null && rxAPI[2] === "1")){
if (rxAPI != null && rxAPI[2] !== "1")
{
nhref = nhref.replace(new RegExp("(\\?|\\&)enablejsapi=[^&]*(\\&)?"),"$1enablejsapi=" +"1"+ "$2");
} else if (rxAPI == null){
nhref = nhref.replace(/^(https?\:\/\/(?:www\.)?youtube(?:-nocookie)?\.com\/(?:v|embed|e)\/[a-zA-Z0-9+\-\_]{11})\??/,"$1?enablejsapi=" + "1" + "&");
}
}
if (nhref+nhrefFragId !== window.location.href)
window.location = nhref + nhrefFragId;
else {
document.addEventListener('DOMContentLoaded', function(){
//console.log("embed"); //DEBUG
var interval = setInterval(function(){
var player = document.getElementById("player").childNodes[0];
if (player != undefined){
if(player.nodeName.toLowerCase() != "embed"){
//console.log("html5 embed"); //DEBUG
ensureSetQuality(player);
}
clearInterval(interval);
}
},10);
}, false);
}
//All the other pages
} else {
// Continue after the page is fully loaded
document.addEventListener('DOMContentLoaded', execOnPageLoad, false);
}
function execOnPageLoad(){
//console.log("execOnPageLoad"); // DEBUG
if ((/^(https?\:\/\/(www\.)?youtube.com\/(watch|user\/|channel\/))/).test(window.location.href)){
//console.log("watch"); //DEBUG
if (document.getElementById("gm-YAPiHQ") == null){
var scr = document.createElement("script");
scr.id = "gm-YAPiHQ";
scr.innerHTML =
["var tag = document.createElement('script');",
"tag.src = '//www.youtube.com/iframe_api';",
"var firstScriptTag = document.getElementsByTagName('script')[0];",
"firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);",
"var ytplayer0;",
"function onYouTubePlayerReady(playerId){",
//" console.log('onReady1');", //DEBUG
" 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');",
" ytplayer0.setPlaybackQuality('" + defaultQuality + "');",
" waitSetHQ();",
"};",
"function ytPlayerOnYouTubePlayerReady(playerId){",
//" console.log('onReady2');", //DEBUG
" 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');",
" ytplayer0.setPlaybackQuality('" + defaultQuality + "');",
" waitSetHQ();",
"};",
"var c;",
"function waitSetHQ(wStart){",
//" console.log('WSHQ');", //DEBUG
" if (wStart==undefined)",
" wStart = new Date();",
" 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');",
" ytplayer0.setPlaybackQuality('" + defaultQuality + "');",
" if (c==undefined){",
//" console.log(c);", //DEBUG
" c='" + defaultQuality + "';",
" var q = ['small','medium','large','hd720','hd1080','highres'];",
" var avq = ytplayer0.getAvailableQualityLevels();",
" for (var i=q.lastIndexOf('" + defaultQuality + "');i>=0;--i){",
" if (avq.lastIndexOf(q[i]) >= 0){",
" c=q[i];",
" break;",
" }",
" }",
" }",
" if (c==ytplayer0.getPlaybackQuality()){",
//" console.log(c+' '+ytplayer0.getPlaybackQuality());", //DEBUG
" c=undefined;",
" return;",
" } else if ((new Date())-wStart<10000)",
" setTimeout(function(){waitSetHQ(wStart)},10);",
"}",
].join('\n');
//console.log(scr.innerHTML); // DEBUG
document.getElementsByTagName("body")[0].appendChild(scr);
}
var target = document.getElementById("player");
var observer;
try {
observer = new MutationObserver(waitSetHQ); //Firefox (Gecko)
} catch (e){
observer = new WebKitMutationObserver(waitSetHQ); //Chrome (WebKit)
}
var config = { attributes: true, childList: false, characterData: true, subtree: false };
observer.observe(target, config); // register observer
} else if ((/^(https?\:\/\/(www\.)?youtube.com\/channels)/).test(window.location.href)){
var target = document.body;
var observer;
try {
observer = new MutationObserver(onChannelsMutation); //Firefox (Gecko)
} catch (e){
observer = new WebKitMutationObserver(onChannelsMutation); //Chrome (WebKit)
}
var config = { attributes: true, childList: true, characterData: true, subtree: true };
observer.observe(target, config);
//Everywhere else
} else {
searchAndReplace(); // Look for embedded videos
// Keep watching for changes in page content, pass changed/inserted nodes to searchAndReplace()
// https://developer.mozilla.org/en-US/docs/DOM/MutationObserver
var target = document.body;
var observer;
try {
observer = new MutationObserver(onMutation); //Firefox (Gecko)
} catch (e){
observer = new WebKitMutationObserver(onMutation); //Chrome (WebKit)
}
var config = { attributes: true, childList: true, characterData: true, subtree: true };
observer.observe(target, config); // register observer
}
}
//Caller must make sure that videoObj.setPlaybackQuality will be defined at some point,
// if not, the function will keep calling itself every 100ms on videoObj until the 10s timeout.
function ensureSetQuality(videoObj,highestAQ,firstCalledAt){
//console.log("ensureSetQuality()" + firstCalledAt); //DEBUG
if (firstCalledAt==undefined)
firstCalledAt = new Date();
else if ((new Date()-firstCalledAt) > 10000)
return;
if (typeof(videoObj.setPlaybackQuality) == "function"){
videoObj.setPlaybackQuality(defaultQuality);
if (videoObj.getPlayerState() == 1 || videoObj.getPlayerState() == 3)
videoObj.playVideo(); // to avoid reload glitch after pausing/starting again
//Store the defaultQuality or the next highest available quality in highestAQ
if (highestAQ==undefined){
var q = ["small","medium","large","hd720","hd1080","highres"];
for (var i=q.lastIndexOf(defaultQuality);i>=0;--i){
if ((videoObj.getAvailableQualityLevels()).lastIndexOf(q[i]) >= 0){
highestAQ=q[i];
break;
}
}
}
if (videoObj.getPlaybackQuality() != highestAQ){
setTimeout(function(){ensureSetQuality(videoObj,highestAQ,firstCalledAt)},100)
}
} else
setTimeout(function(){ensureSetQuality(videoObj,highestAQ,firstCalledAt)},100);
}
function onChannelsMutation(mutations){
mutations.forEach(function(mutation) {
if (mutation.type === "attributes"){
if (mutation.target.nodeName.toLowerCase() == "embed"){
if (typeof(mutation.target.setPlaybackQuality == "function")){
//console.log("attr hit"); //DEBUG
ensureSetQuality(ensureSetQuality);
}
}
} else if (mutation.type === "childList"){
for (var i=0;i<mutation.addedNodes.length;++i)
if (mutation.addedNodes[i].nodeName.toLowerCase() == "embed"){
if (typeof(mutation.addedNodes[i].setPlaybackQuality == "function")){
//console.log("added hit"); //DEBUG
ensureSetQuality(mutation.addedNodes[i]);
}
}
}
});
}
function onMutation(mutations){
var significantNodes = [];
mutations.forEach(function(mutation) {
//console.log(mutation.type); // DEBUG
if (mutation.type === "attributes"){
significantNodes[significantNodes.length] = mutation.target;
} else if (mutation.type === "childList"){
// console.log("onMutation: childList"); //DEBUG
for (var i=0;i<mutation.addedNodes.length;++i)
significantNodes[significantNodes.length] = mutation.addedNodes[i];
}
});
//console.log("significantNodes length: " + significantNodes.length); // DEBUG
if (significantNodes.length>0)
searchAndReplace(significantNodes);
}
function recAddToArr(obj,array){
array.push(obj);
}
function onMutation(mutations){
var significantNodes = [];
mutations.forEach(function(mutation) {
//console.log(mutation.type); // DEBUG
if (mutation.type === "attributes"){
significantNodes[significantNodes.length] = mutation.target;
} else if (mutation.type === "childList"){
// console.log("onMutation: childList"); //DEBUG
for (var i=0;i<mutation.addedNodes.length;++i)
significantNodes[significantNodes.length] = mutation.addedNodes[i];
}
});
//console.log("significantNodes length: " + significantNodes.length); // DEBUG
if (significantNodes.length>0)
searchAndReplace(significantNodes);
}
function searchAndReplace(pNodes){
// console.log("searchAndReplace()"); //DEBUG
if (typeof pNodes == "object") //if searchAndReplace() was called because the page content changed and the function received the changed nodes
{
// console.log("searchAndReplace(pNodes) : " + pNodes.length); // DEBUG
for (var i=0;i<pNodes.length;++i){
// console.log(pNodes[i].nodeName.toLowerCase());
// console.log(pNodes[i].getElementsByTagName("object").length); //DEBUG
if ((/^embed$/i).test(pNodes[i].nodeName)){
// console.log("embed mutation"); //DEBUG
var embedSrc = pNodes[i].getAttribute("src");
if (!embedSrc)
continue;
// console.log("embedSrc: " + embedSrc); //DEBUG
var replaceUrl = replaceSrc(embedSrc);
if (embedSrc != replaceUrl)
pNodes[i].setAttribute("src",replaceUrl);
} else if ((/^object$/i).test(pNodes[i].nodeName)){
var objectData = pNodes[i].getAttribute("data");
if (!objectData)
continue;
// console.log("objectData: " + objectData); //DEBUG
var replaceUrl = replaceSrc(objectData);
if (objectData != replaceUrl)
pNodes[i].setAttribute("data",replaceUrl);
var objectChildren = pNodes[i].getElementsByTagName("param");
for (var j=0;j<objectChildren.length;++j){
if (objectChildren[j].getAttribute("name") != "movie")
continue;
var paramMovie = objectChildren[j].getAttribute("value");
if (paramMovie){
// console.log("paramMovie: " + paramMovie); //DEBUG
var replaceUrl = replaceSrc(paramMovie);
if (paramMovie != replaceUrl)
objectChildren[j].setAttribute("movie",replaceUrl);
} // if
} // for j
} // else if
} // for i
} else {
//console.log("searchAndReplace()"); // DEBUG
var lElems = new Array();
lElems["object"] = "data";
lElems["embed"] = "src";
lElems["param"] = "value";
for (var cTag in lElems){
var cParam = lElems[cTag];
var tagArr = document.getElementsByTagName(cTag);
for (var i=0;i<tagArr.length;++i){
var tagParam = tagArr[i].getAttribute(cParam);
if (!tagParam
|| (cTag == "param" && tagArr[i].getAttribute("name") != "movie"))
continue;
var replaceUrl = replaceSrc(tagParam);
if (tagParam != replaceUrl)
tagArr[i].setAttribute(cParam,replaceUrl);
} // for i
} //for key
} // else
}
function replaceSrc(src){
if ((/^(https?\:\/\/(www\.)?youtube(-nocookie)?\.com\/(v|e)\/[a-zA-Z0-9+\-\_]{11})/).test(src)){
if ((new RegExp("(\\?|\\&)vq=[^#^&]*(\\#|\\&)?")).test(src))
src = src.replace(new RegExp("(\\?|\\&)vq=[^#^&]*(\\#|\\&)?"),"$1vq=" +defaultQuality+ "$2");
else
src = src.replace(/^(https?\:\/\/(www\.)?youtube(-nocookie)?\.com\/(v|e)\/[a-zA-Z0-9+\-\_]{11})\??/,"$1?vq=" +defaultQuality + "&");
}
return src;
}
function verifyDefaultQuality(quality){
if (["small","medium","large","hd720","hd1080","highres"].indexOf(quality) < 0)
return "highres";
return quality;
}