JS Get Media Mimetype From Url

Little function to grab the mime type from a video url, using it in one of my apps will continue to add to it.

function getMimeType(url) {

    var ext = url.split(/[#?]/)[0].split('.').pop().trim();
    switch (ext) {
        case 'mp4':
            return 'video/mp4'
            break;
        case 'mov':
            return 'video/quicktime'
            break;
        case 'flv':
            return 'video/x-flv'
            break;
        case 'm3u8':
            return 'application/x-mpegURL'
            break;
        case 'ts':
            return 'video/MP2T'
            break;
        case 'avi':
            return 'video/x-msvideo'
            break;
        case 'wmv':
            return 'video/x-ms-wmv'
            break;
        case 'webm':
            return 'video/webm'
            break;
        case 'ogg':
            return 'video/ogg'
            break;
        case 'm1v':
            return 'video/mpeg'
            break;
        case 'mpd':
            return 'application/dash+xml'
            break;
        default:
        case 'application/octet-stream':
    }

}