Error about youtubeextractor HOT 12 CLOSED

Same here. Example: www.youtube.com/watch?v=vUKh1HDz4OU
but seems to happen with all videos.

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I came across the problem too. It appears that the ExtractDownloadUrls method in the DownloadResolver class was looking for a 'signatures' query in a youtube url. This query is no longer present so an exception is thrown. If you change the ExtractDownloadUrls method to not use signatures the rest of the process goes without a hitch. The modified method goes as follows:

    private static IEnumerable<Uri> ExtractDownloadUrls(string source)
    {
        string urlMap = HttpHelper.ParseQueryString(source)["url_encoded_fmt_stream_map"];

        string[] splitByUrls = urlMap.Split(',');

        foreach (string s in splitByUrls)
        {
            IDictionary<string, string> queries = HttpHelper.ParseQueryString(s);
            string url = string.Format("{0}&fallback_host={1}", queries["url"], queries["fallback_host"])

            url = HttpHelper.UrlDecode(url);
            url = HttpHelper.UrlDecode(url);

            yield return new Uri(url);
        }
    }

I'm reluctant to submit a pull request because I have no idea what this code did before and if it may be important in some other cases, but it certainly did the trick for me.

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thank you, i'll try this code

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awesome. I'll give it a shot

Thanks!

Mike

On Sun, Mar 2, 2014 at 4:59 PM, Thomas Holmes [email protected]:

I came across the problem too. It appears that the ExtractDownloadUrls
method in the DownloadResolver class was looking for a 'signatures' query
in a youtube url. This query is no longer present so an exception is
thrown. If you change the ExtractDownloadUrls method to not use signatures
the rest of the process goes without a hitch. The modified method goes as
follows:

private static IEnumerable<Uri> ExtractDownloadUrls(string source)
{
    string urlMap = HttpHelper.ParseQueryString(source)["url_encoded_fmt_stream_map"];

    string[] splitByUrls = urlMap.Split(',');

    foreach (string s in splitByUrls)
    {
        IDictionary<string, string> queries = HttpHelper.ParseQueryString(s);
        string url = string.Format("{0}&fallback_host={1}", queries["url"], queries["fallback_host"])

        url = HttpHelper.UrlDecode(url);
        url = HttpHelper.UrlDecode(url);

        yield return new Uri(url);
    }
}

I'm reluctant to submit a pull request because I have no idea what this
code did before and if it may be important in some other cases, but it
certainly did the trick for me.

Reply to this email directly or view it on GitHubhttps://github.com//issues/45#issuecomment-36468748
.

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RichTeaMan code works fine!!!

Thanks!!!

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Should this be closed? No one has commited this code, nor has anyone who knows what the signature query originally did offered any explanation.

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Hey guys, the sig parameter is used if the signature is encrypted. The problem is, I haven't found a way to decrypt this signature yet.

youtube-dl has the code to decrypt it, I even tried to port the code from Python to C#, but I wasn't successful.

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I think the problem started happening for non-encrypted videos.
I was certainly getting it on every video, regardless.

I'm going to assume the code suggestions from RichTeaMan fixed the issue for non-encrypted ones (I have yet to try... been busy). I assume the ones where the signature is encrypted are still affected.

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I assume sometimes the adaptive_fmts query isn't existing and it isn't an issue with the signature

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Ok, I can confirm some of my wandering speculation.
using the code changes from RichTeaMan

I can download
Cosmic Rays Mystery Solved - Sixty Symbols (assuming not encrypted)
http://www.youtube.com/watch?v=aTBvPxQIFts

but not

Katy Perry - Last Friday Night (Vivo, assuming it is encrypted)
http://www.youtube.com/watch?v=KlyXNRrsk4A

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RichTeaMan's patch worked to get me back up and running. I owe him a big thank you!

I couldn't download encrypted (Vevo) videos even before this latest change, so it's no loss for me.

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Oh, I think I know what's going on, I fixed this 2 months ago in 24f7168 but haven't released a new version with this fix yet.

Could you try building from source and see if this fixes it?

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