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- YouTube Subtitle Downloader
- Saturday, May 5th, 2012 at 6:47:15am MDT
- // ==UserScript==
- // @name Download YouTube Captions
- // @namespace http://userscripts.org/*
- // @include http://www.youtube.com/watch?v=iLSM4HpILQY
- // ==/UserScript==
- var id = unsafeWindow.pageVideoId;
- var caption_array=[false];
- function make_timeline(time)
- {
- var string="";
- var integer=0;
- time=time+"";
- if(seconds=time.match(/\.(.*)/))
- seconds=Math.round(parseFloat(seconds[1].substr(0,1)+"."+seconds[1].substr(1,2)));
- else
- seconds="0";
- time=parseInt(time);
- if(time>=36000)
- {
- integer=Math.floor(time/3600);
- time-=3600*integer;
- string+=integer+":";
- }
- else if(time>=3600)
- {
- integer=Math.floor(time/3600);
- time-=3600*integer;
- string+="0"+integer+":";
- }
- else string+="00:";
- if(time>=600)
- {
- integer=Math.floor(time/60);
- time-=60*integer;
- string+=integer+":";
- }
- else if(time>=60)
- {
- integer=Math.floor(time/60);
- time-=60*integer;
- string+="0"+integer+":";
- }
- else
- string+="00:";
- integer=Math.floor(time);
- if(time>=10)
- string+=integer+","+seconds;
- else
- string+="0"+integer+","+seconds;
- return string;
- };
- function parse_captions(xml)
- {
- var captions=new DOMParser().parseFromString(xml,"text/xml").getElementsByTagName("text");
- var srt_output="";
- Array.forEach(captions,function(caption,i)
- {
- srt_output+= i + "\n"
- + make_timeline(caption.getAttribute("start"))
- + " --> "
- + make_timeline(parseFloat(caption.getAttribute("start"))
- + parseFloat(caption.getAttribute("dur")))
- + "\n" + caption.textContent.replace(/&#(\d+);/g,function($0, $1) {
- return String.fromCharCode(Number($1));
- }).replace(/&/g,"&") + "\n\n";
- });
- return srt_output;
- };
- function load_caption(selector)
- {
- var caption=caption_array[selector.selectedIndex];
- if(!caption)return;
- GM_xmlhttpRequest({
- method:"GET",
- url:"http://video.google.com/timedtext?hl="+caption.lang_code+"&lang="+caption.lang_code+"&name="+caption.name+"&v="+id,
- onload:function(xhr)
- {
- if(xhr.responseText!="")
- location.href="data:text/srt;charset=utf-8,"+encodeURIComponent(parse_captions(xhr.responseText));
- else
- alert("Error: No response from server.");
- document.getElementById("captions_selector_option").selected=true;
- }
- });
- };
- function load_captions(video_code)
- {
- GM_xmlhttpRequest({
- method:"GET",
- url:"http://video.google.com/timedtext?hl=en&v="+id+"&type=list",
- onload:function(xhr)
- {
- if(xhr.responseText=="")
- {
- document.getElementById("captions_selector_option").innerHTML="No Captions";
- return;
- }
- var captions=new DOMParser().parseFromString(xhr.responseText,"text/xml").getElementsByTagName("track");
- var select=document.getElementById("captions_selector");
- Array.forEach(captions,function(caption,i)
- {
- var caption_info= {
- name : caption.getAttribute("name"),
- lang_code : caption.getAttribute("lang_code"),
- lang_name : caption.getAttribute("lang_translated")
- };
- caption_array.push(caption_info);
- var option=document.createElement("option");
- option.innerHTML=caption_info.lang_name;
- select.appendChild(option);
- });
- document.getElementById("captions_selector_option").innerHTML="-Download Captions-";
- document.getElementById("captions_selector").disabled=false;
- }
- });
- };
- (function()
- {
- var div=document.createElement("div")
- div.setAttribute("style","padding-top:5px;");
- var select=document.createElement("select");
- select.id="captions_selector";
- select.disabled=true;
- var option=document.createElement("option");
- option.id="captions_selector_option";
- option.innerHTML="Loading Captions";
- option.selected=true;
- select.appendChild(option);
- select.addEventListener("change",function()
- {
- load_caption(this);
- },false);
- div.appendChild(select);
- var tabs=document.getElementById("watch-actions-area").getElementsByTagName("div")[0];
- var last_element=tabs.getElementsByTagName("div");
- tabs.insertBefore(div, last_element[last_element.length-1]);
- load_captions();
- })();
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