This script is originally created by Evadne Wu (https://gist.github.com/evadne/5794585) which generate curl command for PDF, SD and HD. I modified it slightly just to output the curl command HD video.

WWDC2013-DownloadURL

NodeList.prototype.toArray = function () {
    return Array.prototype.slice.call(this);
};
 
[].concat.apply([], document.querySelectorAll("li.session").toArray().map(function(session){
    var sessionID = session.id.match(/^\d+/)[0];
    var title = session.querySelector(".title").innerText;
    var track = session.querySelector(".track").innerText;
    var date = session.querySelector(".date").innerText;
    var allLinks = session.querySelectorAll("a[href^='http://devstreaming']").toArray();
    var titleText = "Session " + sessionID + " - " + title;
    return allLinks.map(function(link){
        var filename = link.pathname.match(/([^/]+)\.[^\.]+/)[0];
        return "curl \"" + link.href + "\" -o \"" + titleText + " - " + filename + "\" & ";
    });
})).reject(function(x){
    return x.indexOf("-SD.mov?dl=1") >= 0 || x.indexOf(".pdf?dl=1") >= 0
    }).map(function(x){
    console.log(x);
    return x;
}).join("\n");