MediaFormat - A regex system for finding the media ID for each type of popular social site. Can identify YouTube, Vimeo, Spotify, and Soundcloud.

MediaFormat

/**
 * mediaId
 * format and return only needed pieces of media from their public sources
 * Author: Trevor Clarke, minor changes from Mark Watkins
 */
function mediaId (){
    // http://www.youtube.com/embed/m5yCOSHeYn4
    var ytRegEx = /^.*(?:(?:youtu\.be\/|v\/|vi\/|u\/\w\/|embed\/)|(?:(?:watch)?\?v(?:i)?=|\&v(?:i)?=))([^#\&\?]*).*/;
    // http://vimeo.com/3116167, https://player.vimeo.com/video/50489180, http://vimeo.com/channels/3116167, http://vimeo.com/channels/staffpicks/113544877
    var vmRegEx = /https?:\/\/(?:vimeo\.com\/|player\.vimeo\.com\/)(?:video\/|(?:channels\/staffpicks\/|channels\/)|)((\w|-){7,9})/;
    // http://open.spotify.com/track/06TYfe9lyGQA6lfqo5szIi, https://embed.spotify.com/?uri=spotify:track:78z8O6X1dESVSwUPAAPdme
    var spRegEx = /https?:\/\/(?:embed\.|open\.)(?:spotify\.com\/)(?:track\/|\?uri=spotify:track:)((\w|-){22})/;
    // https://soundcloud.com/aviciiofficial/avicii-you-make-me-diplo-remix, https://w.soundcloud.com/player/?url=https%3A//api.soundcloud.com/tracks/29395900&color=ff5500&auto_play=false&hide_related=false&show_comments=true&show_user=true&show_reposts=false
    var scRegEx = /https?:\/\/(?:w\.|www\.|)(?:soundcloud\.com\/)(?:(?:player\/\?url=https\%3A\/\/api.soundcloud.com\/tracks\/)|)(((\w|-)[^A-z]{7})|([A-Za-z0-9]+(?:[-_][A-Za-z0-9]+)*(?!\/sets(?:\/|$))(?:\/[A-Za-z0-9]+(?:[-_][A-Za-z0-9]+)*){1,2}))/;

    function getIDfromRegEx ( src, regExpy ){
        return (src.match(regExpy)) ? RegExp.$1 : null;
    }

    return {
        // returns only the ID
        getYoutubeID: function ( src ){
            return getIDfromRegEx( src, ytRegEx);
        },
        // returns main link
        getYoutubeUrl: function ( ID ){
            return "https://www.youtube.com/watch?v=" + ID;
        },
        // returns only the ID
        getVimeoID: function ( src ){
            return getIDfromRegEx( src, vmRegEx);
        },
        // returns main link
        getVimeoUrl: function ( ID ){
            return "http://vimeo.com/" + ID;
        },
        // returns only the ID
        getSpotifyID: function ( src ){
            return getIDfromRegEx( src, spRegEx);
        },
        // returns main link
        getSpotifyUrl: function ( ID ){
            return "http://open.spotify.com/track/" + ID;
        },
        // returns only the ID
        getSoundcloudID: function ( src ){
            return getIDfromRegEx( src, scRegEx);
        },
        // returns main link
        // NOTE: this one really sucks since soundcloud doesnt have good API without js library
        getSoundcloudUrl: function ( ID ){
            return "https://w.soundcloud.com/player/?url=https%3A//api.soundcloud.com/tracks/" + ID; //only way to link to the track currently
        }
    };
}