Regexes for popular media sites to extract the resources ID. Which can then be used to embed in an iframe or another url format.

video_url_regex.js

function youtube(url){ 
   return url.match(/^.*(youtu.be\/|v\/|embed\/|watch\?|youtube.com\/user\/[^#]*#([^\/]*?\/)*)\??v?=?([^#\&\?]*).*/)[3];
}

function vimeo(url) {
    var m = url.match(/^.+vimeo.com\/(.*\/)?([^#\?]*)/);
    return m ? m[2] || m[1] : null;
}

console.log(youtube("http://www.youtube.com/v/0zM3nApSvMg?fs=1&hl=en_US&rel=0"));
console.log(youtube("http://www.youtube.com/embed/0zM3nApSvMg?rel=0"));
console.log(youtube("http://www.youtube.com/watch?v=0zM3nApSvMg&feature=feedrec_grec_index"));
console.log(youtube("http://www.youtube.com/watch?v=0zM3nApSvMg"));
console.log(youtube("http://youtu.be/0zM3nApSvMg"));
console.log(youtube("http://www.youtube.com/watch?v=0zM3nApSvMg#t=0m10s"));
console.log(youtube("http://www.youtube.com/user/IngridMichaelsonVEVO#p/a/u/1/QdK8U-VIH_o"));

console.log(vimeo("http://vimeo.com/54178821"));
console.log(vimeo("http://vimeo.com/channels/nudiecutie/57383513"));
console.log(vimeo("https://vimeo.com/channels/staffpicks/128771883"));
console.log(vimeo("https://vimeo.com/channels/1341"));
console.log(vimeo("https://vimeo.com/channels/1341/129259395"));