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获取视频下载链接，使用方法：进入任意课程点击下载即可。如http://www.imooc.com/learn/814
当前为
// ==UserScript==
// @name 慕课网 下载视频
// @namespace https://github.com/Ahaochan/Tampermonkey
// @version 0.2.0
// @description 获取视频下载链接，使用方法：进入任意课程点击下载即可。如http://www.imooc.com/learn/814
// @author Ahaochan
// @match *://www.imooc.com/learn/*
// @grant GM_xmlhttpRequest
// @grant GM_setClipboard
// @require http://code.jquery.com/jquery-1.11.0.min.js
// ==/UserScript==
//$(document).ready(function(){
/** 导出设置 */
var clarityType = 2;
var outTextType = "idm";
$("div.mod-tab-menu").after(
$("<div id='downloadBox' class='course-brief'>"+
"<div style='float:left;margin-right:70px;'>"+
"<h4 style='font-weight:700;font-size: 16px;marginTop:10px'>下载清晰度 : </h4>"+
"<label for='lowClarity' >Low </label><input type='radio' id='lowClarity' name='clarity' value='0' />"+
"<label for='middleClarity'>Middle</label><input type='radio' id='middleClarity' name='clarity' value='1' />"+
"<label for='highClarity' >High </label><input type='radio' id='highClarity' name='clarity' value='2' checked='checked' />"+
"</div>"+
"<div>"+
"<h4 style='font-weight:700;font-size: 16px;marginTop:10px'>导出格式 : </h4>"+
"<label for='rawOutText' >raw</label><input type='radio' id='rawOutText' name='outText' value='raw'/>"+
"<label for='idmOutText' >idm </label><input type='radio' id='idmOutText' name='outText' value='idm' checked='checked' />"+
"<label for='xmlOutText' >xml </label><input type='radio' id='xmlOutText' name='outText' value='xml' />"+
"<label for='jsomOutText'>json</label><input type='radio' id='jsomOutText' name='outText' value='json'/><br/>"+
"</div>"+
"</div>")
);
$("input:radio").css("margin","auto 50px auto 3px");//设置单选框
$("input:radio[name=clarity]").change(function() { clarityType = this.value; textAreaChange(); });
$("input:radio[name=outText]").change(function() { outTextType = this.value; textAreaChange(); });
function textAreaChange(){
var downloadTextArea = getTextLinks(clarityType,outTextType);
GM_setClipboard(downloadTextArea);
$("#downloadBox textarea").text(downloadTextArea);
}
/** 导出设置 */
//获取下载链接
var videoes = [];
var selector = 'a.J-media-item';
var total = $(selector).length;
$(selector).each(function(index, element) {
var $this = $(this);
var vid = this.href.substring(this.href.lastIndexOf('/') + 1, this.href.length);
var name = this.innerText;
var pattern = /\(\d{2}:\d{2}\)/;
if (!pattern.test(name)) {
total--;
if (index == $(selector).length - 1 && !total) { console.log('没有视频可以下载！'); }
return;
}
name = name.replace(/\(\d{2}:\d{2}\)/, '').replace(/\s/g, '');
//v2(vid, name, $(this));
v3(vid, name, $(this));
});
//获取下载链接
/** 旧版接口，只能解析v1,v2 */
function v2(vid, name, $this){
$.getJSON("/course/ajaxmediainfo/?mid=" + vid + "&mode=flash", function(response) {
var url = response.data.result.mpath[0];
parseVideo(vid, name, url, $this);
});
}
/** 新版接口，解析v1,v2,v3 */
function v3(vid, name, $this){
GM_xmlhttpRequest({
method: "GET",
url: "http://m.imooc.com/video/"+vid,
onload: function(response) {
var pattern = /(http.+mp4)/;
var url = response.responseText.match(pattern)[0];
parseVideo(vid, name, url, $this);
}
});
}
/** 处理数据 */
function parseVideo(vid, name, url, $this){
var urlL = url.replace("H.mp4","M.mp4").replace("M.mp4","L.mp4");
var urlM = url.replace("H.mp4","M.mp4").replace("L.mp4","M.mp4");
var urlH = url.replace("L.mp4","M.mp4").replace("M.mp4","H.mp4");
var video = {
vid: vid,
name: name,
url: [ urlL, urlM, urlH ]
};
videoes.push(video);
//添加单个下载链接
var $link = $("<a href='"+video.url[clarityType]+"' class='downLink' style='position:absolute;right:100px;top:0;' target='_blank'>下载</a>");
$this.after($link);
$link.bind("DOMNodeInserted", function() { $(this).find("i").remove();} );//移除子标签
//添加全部下载链接
if (videoes.length == total) {
$("#downloadBox").append('共' + total + '个视频。已完成解析' + videoes.length + '个视频。已复制到剪贴板<br/>');
$("#downloadBox").append($("<textarea style='width:100%;border:2px solid red;padding:5px;height:100px;'></textarea>"));//全部链接
videoes.sort(function(a,b){
if(a.name>b.name) return 1;
else if(a.name<b.name) return -1;
else return 0;
});
textAreaChange();
}
}
/** 更新textarea */
function getTextLinks(clarityType, outTextType){
if(outTextType === "json") return JSON.stringify(videoes);
else {
var str = "";
for(var i in videoes) {
if(outTextType === "xml"){
str += '\t<video>\n\t\t<url>' + videoes[i].url[clarityType] + '</url>\n\t\t<name>' + videoes[i].name + '</name>\n\t</video>\n';
} else if(outTextType === "raw"){
str += videoes[i].url[clarityType]+"\n";
} else {//idm
str += "filename="+videoes[i].name+"&fileurl="+videoes[i].url[clarityType]+"\n";
}
}
if(outTextType === "xml") str = "<?xml version='1.0' encoding='utf-8' ?>\n<videoes>\n"+str+'</videoes>';
return str;
}
}
//});