Lazy load embedded videos from Youtube/Dailymotion/Vimeo/Rutube/Twitch/Ustream
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// ==UserScript== // @name Lazy Embedded Video // @namespace [email protected] // @description Lazy load embedded videos from Youtube/Dailymotion/Vimeo/Rutube/Twitch/Ustream // @version 2.0 // @grant none // ==/UserScript== (function() { try { if(/youtube|dailymotion|vimeo|rutube|twitch|ustream/i.test(top.location.hostname)) return; } catch(e) {} var testCSP = function() { if(!document.getElementById("zeusCSP")) { var script = document.createElement("SCRIPT"); script.id = "zeusCSP"; script.text = "CSP_AllowInlineScript = true;"; document.head.appendChild(script); } return window.CSP_AllowInlineScript; }; var html, a; var createHtml = function(url, iframe, api, background_img) { /(.*\/\/(?:[^.\/]+\.)?([^.\/]+)\.[^.\/]+)\//i.test(url); var provider_url = RegExp.$1, provider_name = RegExp.$2, data_convert = "", extra_script = "", button_hsb = []; if(api.includes("yahooapis")) data_convert += "data = data.query.results.json;"; if(provider_name == "twitch") { if(background_img) { // channel live data_convert += "data.title = data.status || 'Untitled Broadcast';"+ "data.author_url = '"+provider_url+"/'+data.name+'/profile';"+ "data.author_name = data.display_name;"+ "data.duration = data.game && 'playing <a target=_blank href=\""+provider_url+"/directory/game/'+data.game+'\">'+data.game+'</b>';"+ "offline_image = data.video_banner;"; extra_script += "<script defer src='https://api.twitch.tv/kraken/streams?channel="+url.match(/[^\/]+$/)[0]+"&callback=jsonpCallback2'></script>"+ "<script>"+ "function jsonpCallback2(data) {"+ "if(data.streams.length != 0) return;"+ "document.body.style.backgroundImage = 'url('+offline_image+')';"+ "document.getElementById('duration').textContent = 'offline';"+ "}"+ "</script>"; } else { // video recorded data_convert += "data.thumbnail_url = data.preview;"+ "data.author_url = '"+provider_url+"/'+data.channel.name+'/profile';"+ "data.author_name = data.channel.display_name;"+ "data.duration = data.length;"; } } if(background_img) // prevent downloading a second image data_convert += "delete data.thumbnail_url;"; switch(provider_name) { case "youtube" : button_hsb.push( 0, 100, 100); break; case "dailymotion": button_hsb.push( 60, 30, 300); break; case "vimeo" : button_hsb.push(220, 50, 220); break; case "rutube" : button_hsb.push( 0, 0, 250); break; case "twitch" : button_hsb.push(270, 50, 100); break; case "ustream" : button_hsb.push( 40, 50, 230); break; } if(!html) html = [ "<!doctype html>"+ "<html>"+ "<head>"+ "<title>Lazy Embedded Video</title>"+ "<script defer src='", api, "&callback=jsonpCallback'></script>"+ "<script>"+ "function jsonpCallback(data){", data_convert, "if(data.thumbnail_url) document.body.style.backgroundImage = 'url('+data.thumbnail_url+')';"+ "if(data.url) document.getElementById('title').href = data.url;"+ "if(data.title) document.getElementById('title').textContent = "+ "document.getElementById('title').title = data.title;"+ "if(data.author_url) document.getElementById('author').href = data.author_url;"+ "if(data.author_name) document.getElementById('author').textContent = data.author_name;"+ "if(data.duration) {"+ "if(Number(data.duration))"+ "document.getElementById('duration').textContent = new Date(data.duration*1000).toISOString().substr(11,8);"+ "else document.getElementById('duration').innerHTML = data.duration;"+ "}"+ "}"+ "</script>", extra_script, "<style>"+ "html { height: 100%; }"+ "body {"+ "margin: 0;"+ "height: 100%;"+ "background: black ", background_img, " center/100% no-repeat;"+ "color: white;"+ "font: 14px sans-serif;"+ "}"+ "a {"+ "color: inherit;"+ "font-weight: bold;"+ "text-decoration: none;"+ "}"+ "a:hover { text-decoration: underline; }"+ "ul {"+ "margin: 0;"+ "padding: 0;"+ "list-style: none;"+ "}"+ "#infobar {"+ "position: absolute;"+ "top: 0px;"+ "width: 100%;"+ "padding: 8px 16px;"+ "box-sizing: border-box;"+ "background: rgba(0,0,0,0.5);"+ "word-wrap: break-word;"+ "}"+ "#infobar_right {"+ "float: right;"+ "margin-left: 16px;"+ "text-align: right;"+ "text-transform: capitalize;"+ "}"+ "#button {"+ "height: 100%;"+ "cursor: pointer;"+ "background-position: 0px 50%;"+ "}"+ "#button:hover {"+ "background-position: -70px 50%;"+ "filter: hue-rotate(", button_hsb[0], "deg) saturate(", button_hsb[1], "%) brightness(", button_hsb[2], "%);"+ "-webkit-filter: hue-rotate(", button_hsb[0], "deg) saturate(", button_hsb[1], "%) brightness(", button_hsb[2], "%);"+ "}"+ "#button > div {"+ "width: 70px;"+ "height: 100%;"+ "margin: auto;"+ "background: url(//i.imgur.com/1aybyWN.png) no-repeat;"+ "background-position: inherit;"+ "}"+ "#titleBlock {"+ "overflow: hidden;"+ "max-height: 34px;"+ "}"+ "</style>"+ "</head>"+ "<body>"+ "<div id=button onclick='location.replace(\"", iframe, "\");'><div></div></div>"+ "<div id=infobar>"+ "<ul id=infobar_right>"+ "<li><a id=author target=_blank></a></li>"+ "<li><a id=provider target=_blank href='", provider_url, "'>", provider_name, "</a></li>"+ "</ul>"+ "<ul>"+ "<li id=titleBlock><a id=title target=_blank href='", url, "'>", url, "</a></li>"+ "<li id=duration></li>"+ "</ul>"+ "</div>"+ "</body>"+ "</html>" ]; html[ 1] = api; html[ 3] = data_convert; html[ 5] = extra_script; html[ 7] = background_img; html[ 9] = button_hsb[0]; html[11] = button_hsb[1]; html[13] = button_hsb[2]; html[15] = button_hsb[0]; html[17] = button_hsb[1]; html[19] = button_hsb[2]; html[21] = iframe; html[23] = provider_url; html[25] = provider_name; html[27] = url; html[29] = url; }; var createOembed = function(api, url) { return api+encodeURIComponent(url); }; var createNOembed = function(api, url) { return createOembed("//noembed.com/embed?url=", location.protocol+url); }; var createYOembed = function(api, url) { return createOembed("//query.yahooapis.com/v1/public/yql?format=json&q=", 'SELECT * FROM json WHERE url="'+createOembed(location.protocol+api,url)+'"'); }; var createLazyVideo = function(elem) { if(elem.tagName == "IFRAME" && elem.srcdoc) return true; var id, args, url = elem.src || elem.data || elem.dataset.src; if(!url) return true; if(!a) a = document.createElement("A"); a.href = url; /([^.]+)\.[^.]+$/i.test(a.hostname); switch(RegExp.$1) { case "youtube" : if(/\/(?:v|embed)\/([^&]*)/i.test(a.pathname)) id = RegExp.$1 || (/[?&]v=([^&]+)/i.test(a.search) && RegExp.$1); if(!id || !testCSP()) return !id; args = "?autoplay=1"; if(/[?&](list=[^&]+)/i.test(a.search)) args += "&"+RegExp.$1; if(/[?&](start=[^&]+)/i.test(a.search)) args += "&"+RegExp.$1; createHtml(url = "//www.youtube.com/watch"+args+"&v="+id, "//www.youtube.com/embed/"+id+args, createNOembed("//www.youtube.com/oembed?format=json&url=", url), "url(//i.ytimg.com/vi/"+id+"/hqdefault.jpg)" ); break; case "dailymotion" : if(/\/(?:swf|embed)\/video\/([^&_]+)/i.test(a.pathname)) id = RegExp.$1; if(!id || !testCSP()) return !id; args = "?autoplay=1"; if(/[?&](mute=[^&]+)/i.test(a.search)) args += "&"+RegExp.$1; if(/[?&](start=[^&]+)/i.test(a.search)) args += "&"+RegExp.$1; createHtml(url = "//www.dailymotion.com/video/"+id+args, "//www.dailymotion.com/embed/video/"+id+args, createOembed("//www.dailymotion.com/services/oembed?format=json&url=", location.protocol+url), "url(//www.dailymotion.com/thumbnail/video/"+id+")" ); break; case "vimeo" : if(/\/(?:moogaloop\.swf|video\/)([^&]*)/i.test(a.pathname)) id = RegExp.$1 || (/[?&]clip_id=([^&]+)/i.test(a.search) && RegExp.$1); if(!id || !testCSP()) return !id; args = "?autoplay=1"; if(/[?&](loop=[^&]+)/i.test(a.search)) args += "&"+RegExp.$1; if(/(\#t=[\dhms]+)/i.test(a.hash)) args += RegExp.$1; createHtml(url = "//vimeo.com/"+id+args, "//player.vimeo.com/video/"+id+args, createOembed("//vimeo.com/api/oembed.json?url=", url) ); break; case "rutube" : if(/\/play\/embed\/([a-z\d]+)/i.test(a.pathname)) id = RegExp.$1; if(!id || !testCSP()) return !id; args = "?autoStart=1"; if(/[?&](bmstart=[^&]+)/i.test(a.search)) args += "&"+RegExp.$1; createHtml(url = "//rutube.ru/"+(isNaN(id) ? "video/"+id+"/" : "tracks/"+id+".html/")+args, "//rutube.ru/play/embed/"+id+args, createOembed("//rutube.ru/api/oembed/?format=jsonp&url=", url) ); break; case "twitch" : if(/[?&](channel|video)=([^&]+)/i.test(a.search)) {args = RegExp.$1; id = RegExp.$2;} else if(/\/(.+)\/embed/i.test(a.pathname)) {args = "channel"; id = RegExp.$1;} if(!id || !testCSP()) return !id; createHtml(url = "//www.twitch.tv/"+(args=="video" ? id.replace("v","c/v/") : id), "//player.twitch.tv/?autoplay=true&"+args+"="+id, "https://api.twitch.tv/kraken/"+args+"s/"+id+"?", args=="channel" ? "url(//static-cdn.jtvnw.net/previews-ttv/live_user_"+id+"-0x0.jpg)" : null ); break; case "ustream" : if(/(?:\/embed)?\/(recorded\/)?([^&]+)/i.test(a.pathname)) {args = RegExp.$1; id = RegExp.$2;} if(!id || !testCSP()) return !id; createHtml(url = "//www.ustream.tv/"+(args||"channel/")+id, "//www.ustream.tv/embed/"+args+id+"?html5ui=1&autoplay=1", createYOembed("//www.ustream.tv/oembed?format=json&url=", url) ); break; default : return true; } if(elem.tagName != "IFRAME") { var iframe = document.createElement("IFRAME"); iframe.id = elem.id; iframe.className = elem.className; iframe.style.cssText = elem.style.cssText; if(!iframe.style.width && elem.width ) iframe.style.width = elem.width+"px"; if(!iframe.style.height && elem.height) iframe.style.height = elem.height+"px"; if(elem.parentNode.tagName == "OBJECT") { elem = elem.parentNode; iframe.style.cssText = elem.style.cssText + iframe.style.cssText; if(!iframe.style.width && elem.width ) iframe.style.width = elem.width+"px"; if(!iframe.style.height && elem.height) iframe.style.height = elem.height+"px"; } if(!iframe.style.borderWidth) iframe.style.borderWidth = (elem.border||0)+"px"; switch(elem.align) { case "left" : case "right" : if(!iframe.style.float) iframe.style.float = elem.align; break; case "top" : case "middle" : case "bottom" : if(!iframe.style.verticalAlign) iframe.style.verticalAlign = elem.align; break; } elem.parentNode.replaceChild(iframe, elem); elem = iframe; } elem.allowFullscreen = true; elem.srcdoc = html.join(""); return true; }; // convert NodeList to Array because for some reason sometimes I wasn't able to read src when iterating directly through NodeList var nodes = ["IFRAME", "EMBED", "OBJECT"].reduce(function(sum, value) { return sum.concat([].slice.call(document.getElementsByTagName(value))); }, frameElement ? [frameElement] : []); for(var i = 0; i < nodes.length && createLazyVideo(nodes[i]); i++) {} })();
