Can't download youtube video

[Hamza-Almass]

I got this error wjhen I try to fetch video url :

YoutubeParseException: Could not parse the Youtube page for URL http://youtube.com/watch?v=ZYRfUoR9Q4Y This may be due to a change of the Youtube page structure. Please report this bug at www.github.com/flagbug/YoutubeExtractor/issues

[gonzogonzales]

I have changed the GetHtml5PlayerVersion methoed and so the portable version worked for me:
private static string GetHtml5PlayerVersion(JObject json)
{
var regex = new Regex(@"player_(.+?).js");

        string js = json["assets"]["js"].ToString();

        return regex.Match(js).Result("$1");
    }