YouTube Plugin

whurlston · 2015-01-24, 11:01 AM

jksmurf Wrote:Thanks.

1. It plays the video, but only with very sporadic sound.

Try pausing and letting it buffer a little more.

jksmurf Wrote:2. I can see the buffered file grow, but it is not saved? In your old Youtube versions, the saved versions played locally. Is it possible to reinstate that?

I don't think it keeps the file any longer because the plan was to implement "Recording" instead but I never got around to that. I can add the option to save the file.

jksmurf Wrote:3. What does disabling the script caching actually do please? Does it keep the local ts file?

Disabling the script cache just means it won't cache the javascript from the youtube page locally. The javascript holds the signature decryption functions. When the algorithm changes, the script has to be re-cached.

macgyver · 2015-01-26, 10:58 AM

whurlston Wrote:Did you move the new youtube.dll from "Plugin" to "Plugins"? I made a mistake when packaging it.

Ah, no. But I have now!
Many thanks.

macgyver · 2015-01-26, 12:27 PM

macgyver Wrote:Ah, no. But I have now!
Many thanks.

Spoke slightly too soon, it worked for some (from a channel) but now I'm getting IE script errors for others (from a search). Could it be because I'm still running XP, and therefore IE8?

whurlston · 2015-01-26, 01:49 PM

Did you also move the NExtUtility.dll? I forgot to mention that

macgyver · 2015-01-27, 12:53 PM

It's looking pretty good now thanks, but I do still sometimes get a load of IE Scripts errors and then:
YouTube: Could not buffer video: The remote server returned an error: (403) Forbidden
These are typically music videos.
I have disabled script caching and restarted.
I just tried searching 'Rosie Vela' (remember her?) and playing pretty much any of the vids (eg Magic Smile) fails as above.

whurlston · 2015-01-27, 07:23 PM

Found the problem; I had to modify my regex slightly because of a missing space in the website. Replace your parser.aspx with the following (this also adds a variable "UseScriptCaching" near the top of the file to make enabling/disabling the script caching easier):

Code:
<%@ Page Language="C#" AutoEventWireup="true" %>

<%@ Import Namespace="System.Net" %>

<%@ Import Namespace="System.IO" %>

<%@ Import Namespace="N_EWA.classes" %>

<%@ Import Namespace="NUtility" %>

<%@ OutputCache Location="None" VaryByParam="None" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

internal bool YtConfigParser(string videoID, out string html)

{

    [COLOR="#FF0000"][B]// Change this to "true" to cache signature decryption scripts.

    bool UseScriptCaching = false;[/B][/COLOR]

    DateTime start = DateTime.Now;

    Logger.Info("YouTube Web: Start of YtConfigParser");

    html = string.Empty;

    Logger.Info("YouTube Web: Creating StreamerPost");

    StreamerPost streamt = new StreamerPost();

    Logger.Info("YouTube Web: StreamerPost created.");

    if (videoID == "InitializeOnly") return true;

    streamt.Url = "https://www.youtube.com/watch?v=" + videoID;

    streamt.Type = StreamerPost.PostTypeEnum.Get;

    Logger.Info("YouTube Web: StreamerPost sending request.");

    string s1t = streamt.Post();

    Logger.Info("YouTube Web: StreamerPost completed.");

    // File.WriteAllText(HttpContext.Current.Request.PhysicalApplicationPath.Replace("\\", "\\\\") + "public\\youtube\\htmldump.txt", s1t);

    Logger.Info("YouTube Web: Searching for ytplayer.config.");

    System.Text.RegularExpressions.Match m = new System.Text.RegularExpressions.Regex("ytplayer\\.config(.+)(?=;)").Match(s1t);

    if (!m.Success)

    {

           Logger.Info("YouTube Web: Unable to parse player config.");

        html = "<div" + " id='status-message'>Unable to parse player config.</" + "div>";

        return false;

    }

    Logger.Info("YouTube Web: ytplayer.config found.");

    string ytconfig = m.Value.Substring(0, m.Value.IndexOf("};") + 1);

    System.Text.RegularExpressions.MatchCollection matches = System.Text.RegularExpressions.Regex.Matches(ytconfig, @"(?<=s=)[A-Z0-9]+\.[A-Z0-9]+");

    if (matches.Count > 0)

    {

        Logger.Info("YouTube Web: Encrypted signatures detected.");

        System.Text.RegularExpressions.Match m2 = new System.Text.RegularExpressions.Regex("\"js\"[\\s]*:[\\s]*\"(?<jscript>[^\"]+)").Match(s1t);

        if (!m2.Success)

        {

            Logger.Info("YouTube Web: Unable to find signature decryption script.");

            html = "<div" + " id='status-message'>Unable to find signature decryption script.</" + "div>";

            return false;

        }

        Logger.Info("YouTube Web: Getting signatures decryption script: " + m2.Groups["jscript"].Value);

        string jsScript;

        string scriptFolder = HttpContext.Current.Request.PhysicalApplicationPath.Replace("\\", "\\\\") + "public\\youtube\\scripts\\";

        string file = scriptFolder + Path.GetFileName(m2.Groups["jscript"].Value.Replace("\\",string.Empty));

        if (!File.Exists(file) || !UseScriptCaching)

        {

            Logger.Info("YouTube Web: Checking for local copy: " + file);

            streamt.Url = "http:" + m2.Groups["jscript"].Value.Replace("\\", string.Empty);

            streamt.Type = StreamerPost.PostTypeEnum.Get;

            Logger.Info("YouTube Web: " + streamt.Url);

            jsScript = streamt.Post();

            if (UseScriptCaching)

            {

                Logger.Info("YouTube Web: Saving local copy of signature decryption script");

                try

                {

                    if (!Directory.Exists(scriptFolder))

                        Directory.CreateDirectory(scriptFolder);

                    File.WriteAllText(file, jsScript);

                }

                catch 

                {

                    Logger.Error("YouTube Web: Could not cache script.");

                }

            }

        }

        else

        {

            Logger.Info("YouTube Web: Reading local copy of signature decryption script");

            jsScript = File.ReadAllText(file);

        }

        Logger.Info("YouTube Web: Script retrieval complete.");

        m2 = new System.Text.RegularExpressions.Regex(@"set..signature..(?<name>[$a-zA-Z]+)\([^)]\)").Match(jsScript);

        if (!m2.Success)

        {

            Logger.Info("YouTube Web: Unable to determine signature decryption function.");

            html = "<div" + " id='status-message'>Unable to determine signature decryption function.</" + "div>";

            return false;

        }

        string decodeFunction = m2.Groups["name"].Value;

        html = "<div" + " id='status-message'>Encrypted</" + "div>";

        // Remove outer function() wrapper

        string nScript = jsScript.Remove(0, jsScript.IndexOf('{') + 1);

        nScript = nScript.Remove(nScript.LastIndexOf('}'));

        html += "<script language='javascript'>\r\n\t" + nScript + "\r\n</" + "script>\r\n";

        html += "<div id='ytconfig'>" + ytconfig + "</div>\r\n";

        foreach (System.Text.RegularExpressions.Match match in matches)

        {

            html += "<script language='javascript'>var str1='s=" + match.Value + "';";

            html += "var str2='sig=' + " + decodeFunction + "('" + match.Value + "');";

            html += "document.getElementById('ytconfig').innerHTML = document.getElementById('ytconfig').innerHTML.replace(str1, str2);";

            html += "</" + "script>\r\n";

        }

    }

    else

    {

        html = "<div" + " id='status-message'>Unencrypted</" + "div>";

        html += "<div id='ytconfig'>" + ytconfig + "</div>\r\n";

    }

    TimeSpan t = DateTime.Now - start;

    Logger.Info("YouTube Web: Parsing completed in " + t.TotalMilliseconds + "ms");

    return true;

}

</script>

<html>

    <head>

<META HTTP-EQUIV="Pragma" CONTENT="no-cache">

<META HTTP-EQUIV="Expires" CONTENT="-1">

<meta http-equiv="X-UA-Compatible" content="IE=edge" />

        <title></title>

    </head>

<body>

<%

    string videoID = Request.Params["v"];

    // test video

    if (String.IsNullOrEmpty(videoID)) videoID = "z8dwNrNnFx4"; // "nUb9wa5OsJI1";

    try

    {

        Logger.Info("YouTube Web: Calling parser");

        string html;

        bool b = YtConfigParser(videoID, out html);

        Logger.Info("YouTube Web: Return from parser"); 

        Logger.Info("YouTube Web: Writing Response"); 

        try

        {

           Response.Write("<div" + " id='status'>");

           Response.Write(b ? "Success" : "Fail");

           Response.Write("</div>");

           Response.Write(html);

        }

        catch (Exception e)

        {

            Logger.Info("YouTube Web: Crash:  Error writing response: " + e);

            Response.Write("<div" + " id='status'>Fail</" + "div>");

            Response.Write("<div" + " id='status-message'>" + e.Message + "</" + "div>");

        }

    }

    catch (Exception e)

    {

        Logger.Info("YouTube Web: Crash:  Error in UpdateDecodeSig call: " + e);

        Response.Write("<div id='status'>Fail</div>");

        Response.Write("<div" + " id='status-message'>" + e.Message + "</" + "div>");

    }

%>

</body>

</html>

Reddwarf · 2015-01-28, 07:38 AM

Should we all replace parser.aspx?

jksmurf · 2015-01-28, 10:56 AM

whurlston Wrote:Try pausing and letting it buffer a little more..

Tried that - even with new parser in post #596, I get a repeating error as below. Video plays a while but no sound. Then bails out. I am not able to locate MP42TSConverter either?

whurlston Wrote:I don't think it keeps the file any longer because the plan was to implement "Recording" instead but I never got around to that. I can add the option to save the file..

That would be great thanks.

whurlston Wrote:Disabling the script cache just means it won't cache the javascript from the youtube page locally. The javascript holds the signature decryption functions. When the algorithm changes, the script has to be re-cached.

OK Cheers.

Code:
2015-01-28 18:46:56.363    [DEBUG][1]    GetDuration returning 129

2015-01-28 18:46:56.469    [DEBUG][1]    GetDuration returning 129

2015-01-28 18:46:56.581    [DEBUG][1]    GetDuration returning 129

2015-01-28 18:46:56.688    [DEBUG][1]    GetDuration returning 129

2015-01-28 18:46:56.733    [DEBUG][1]    GetEventCode() returned: 0x0001

2015-01-28 18:46:56.733    [DEBUG][1]    About to store playback position information

2015-01-28 18:46:56.733    [DEBUG][1]    GetDuration returning 129

2015-01-28 18:46:56.733    [DEBUG][1]    PlaybackPositionHelper.StorePlaybackPosition(fYP-3q22too.ts, 129, 129)

2015-01-28 18:46:56.733    [DEBUG][1]    PlaybackPositionHelper.DeletePlaybackPosition(D:\GBPVRLiveTVBuffer\YouTube\fYP-3q22too.ts)

2015-01-28 18:46:56.744    [DEBUG][1]    Stopping graph@1

2015-01-28 18:46:56.779    [DEBUG][12]    MP42TSConverter: Could not update progress. Probably couldn't parse ffmpeg frame number:

frame= 2247 fps= 56 q=-1.0 size=   14345kB time=74.63 bitrate=1574.7kbits/s    

   at System.Globalization.TimeSpanParse.ProcessTerminal_HM(TimeSpanRawInfo& raw, TimeSpanStandardStyles style, TimeSpanResult& result)

   at System.Globalization.TimeSpanParse.ProcessTerminalState(TimeSpanRawInfo& raw, TimeSpanStandardStyles style, TimeSpanResult& result)

   at System.Globalization.TimeSpanParse.TryParseTimeSpan(String input, TimeSpanStandardStyles style, IFormatProvider formatProvider, TimeSpanResult& result)

   at System.Globalization.TimeSpanParse.Parse(String input, IFormatProvider formatProvider)

   at System.TimeSpan.Parse(String s)

   at NExtUtility.FFMpeg.Progress..ctor(TimeSpan expectedDuration, String input, Boolean isCancelled)

2015-01-28 18:46:56.970    [DEBUG][1]    Stopping graph@2

2015-01-28 18:46:56.979    [DEBUG][1]    Stopping graph@3

2015-01-28 18:46:56.986    [DEBUG][1]    Removing filter  NPVR CC Dump

2015-01-28 18:46:56.986    [DEBUG][1]    Removing filter  EVR Renderer

2015-01-28 18:46:56.988    [DEBUG][1]    Removing filter  NPVR PES Collector (Teletext)

2015-01-28 18:46:56.988    [DEBUG][1]    Removing filter  EAC3 Audio Renderer

2015-01-28 18:46:56.988    [DEBUG][1]    Removing filter  NPVR PES Collector (DVBSubs)

2015-01-28 18:46:56.989    [DEBUG][1]    Removing filter  MPEG1 Audio Renderer

2015-01-28 18:46:56.989    [DEBUG][1]    Removing filter  AC3 Audio Renderer

2015-01-28 18:46:56.989    [DEBUG][1]    Removing filter  AAC Audio Renderer

2015-01-28 18:46:56.989    [DEBUG][1]    Removing filter  Line 21 Decoder

2015-01-28 18:46:57.306    [DEBUG][12]    MP42TSConverter: Could not update progress. Probably couldn't parse ffmpeg frame number:

frame= 2271 fps= 55 q=-1.0 size=   14619kB time=75.60 bitrate=1584.1kbits/s    

   at System.Globalization.TimeSpanParse.ProcessTerminal_HM(TimeSpanRawInfo& raw, TimeSpanStandardStyles style, TimeSpanResult& result)

   at System.Globalization.TimeSpanParse.ProcessTerminalState(TimeSpanRawInfo& raw, TimeSpanStandardStyles style, TimeSpanResult& result)

   at System.Globalization.TimeSpanParse.TryParseTimeSpan(String input, TimeSpanStandardStyles style, IFormatProvider formatProvider, TimeSpanResult& result)

   at System.Globalization.TimeSpanParse.Parse(String input, IFormatProvider formatProvider)

   at System.TimeSpan.Parse(String s)

   at NExtUtility.FFMpeg.Progress..ctor(TimeSpan expectedDuration, String input, Boolean isCancelled)

2015-01-28 18:46:57.853    [DEBUG][10]    MP42TSConverter: Could not update progress. Probably couldn't parse ffmpeg frame number:

frame= 2296 fps= 55 q=-1.0 size=   14740kB time=76.09 bitrate=1586.9kbits/s    

   at System.Globalization.TimeSpanParse.ProcessTerminal_HM(TimeSpanRawInfo& raw, TimeSpanStandardStyles style, TimeSpanResult& result)

   at System.Globalization.TimeSpanParse.ProcessTerminalState(TimeSpanRawInfo& raw, TimeSpanStandardStyles style, TimeSpanResult& result)

   at System.Globalization.TimeSpanParse.TryParseTimeSpan(String input, TimeSpanStandardStyles style, IFormatProvider formatProvider, TimeSpanResult& result)

   at System.Globalization.TimeSpanParse.Parse(String input, IFormatProvider formatProvider)

   at System.TimeSpan.Parse(String s)

   at NExtUtility.FFMpeg.Progress..ctor(TimeSpan expectedDuration, String input, Boolean isCancelled)

2015-01-28 18:46:57.990    [DEBUG][1]    Removing filter  LAV Audio Decoder 0003

2015-01-28 18:46:57.990    [DEBUG][1]    Removing filter  LAV Audio Decoder 0002

2015-01-28 18:46:57.990    [DEBUG][1]    Removing filter  LAV Audio Decoder 0001

2015-01-28 18:46:57.990    [DEBUG][1]    Removing filter  LAV Audio Decoder

2015-01-28 18:46:57.992    [DEBUG][1]    Removing filter  Microsoft DTV-DVD Video Decoder

2015-01-28 18:46:58.001    [DEBUG][1]    Removing filter  MPEG-2 Demultiplexer

2015-01-28 18:46:58.002    [DEBUG][1]    Removing filter  NPVR TS Reader2

macgyver · 2015-01-28, 11:37 AM

[quote=whurlston]Found the problem; I had to modify my regex slightly because of a missing space in the website. Replace your parser.aspx with the following (this also adds a variable "UseScriptCaching" near the top of the file to make enabling/disabling the script caching easier):

Hmmm, doesn't appear to have made any difference - I still get the IE errors and then 403. Double-checked parser, deleted IE cache, restarted.
Anything else I need to clear/reset?

Logs: [ATTACH=CONFIG]39603[/ATTACH]

[ATTACH=CONFIG]39602[/ATTACH]

mvallevand · 2015-01-28, 12:13 PM

The last time I put on a new player I had to restart the recording server to see changes.

Marti

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