Common::isValidVideoMimeType

protected function isValidVideoMimeType($type = '')
{
	if(empty($type))
	{
		return false;
	}

	static $validTypes = array(
		'video/mp4', 'video/x-flv', 'video/webm', 'video/ogg', 'video/quicktime'
	);

	return in_array($type, $validTypes);
}