Get YouTube urls for download/streaming in openFrameworks

YouTube info in OF

struct YouTubeVideo
{
    string url;
    int itag;
    map<string, string> valueMap;
    vector<string> valueMapNames;
    YouTubeVideo()
    {
        url = "";
        itag = -1;
    }
    void print()
    {
        stringstream info;
        info << "url: " << url << "\n";
        info << "itag: " << itag << "\n";
        
        info << "valueMap key/values START \n";
        for(size_t i=0; i<valueMapNames.size(); i++)
        {
            info << valueMapNames[i] << " : " << valueMap[valueMapNames[i]] << "\n";
        }
        ofLogVerbose(__func__) << info.str();
    }
};

YouTubeVideo createYouTubeVideoInfo(string url)
{
    YouTubeVideo youtubeVideo;
    youtubeVideo.url = url;
    
    vector <string> params = ofSplitString(url, "&");
    for(size_t i=0; i<params.size(); i++)
    {
        string currentParam = params[i];
        vector <string> keyValues = ofSplitString(currentParam, "=");
        if(keyValues.size()>=2)
        {
            if(keyValues[0] == "itag")
            {
                youtubeVideo.itag = ofToInt(keyValues[1]);
            }
            youtubeVideo.valueMap[keyValues[0]] = keyValues[1];
            youtubeVideo.valueMapNames.push_back(keyValues[0]);
        }
    }
    return youtubeVideo;
}
 /*
string INFO_URL = "http://www.youtube.com/get_video_info?&video_id=zlbXf3kg5zM";
getVideoInfo(INFO_URL);
*/
void getVideoInfo(string url)
{
    ofHttpResponse httpResponse = ofLoadURL(url);
    if(httpResponse.status > 0)
    {
       
        string encoded = httpResponse.data.getText();
        string decoded;
        Poco::URI::decode (encoded, decoded) ;
        
        //ofLogVerbose(__func__) << "decoded: \n" << decoded << "\n\n\n\n\n\n";
        vector <string> params = ofSplitString(decoded, "&");
        
        vector<string> decodedURLs;
        for(size_t i=0; i<params.size(); i++)
        {
            
            if (params[i].find("=") != string::npos)
            {
                string key = params[i].substr(0, params[i].find("=", 1));
                string value = params[i].substr(params[i].find("=", 1)+1, params[i].length());
 
                if(key == "url_encoded_fmt_stream_map")
                {
                    continue;
                }
                
                if(key == "url")
                {
                    if (value.find(",") != string::npos)
                    {
                        value = value.substr(0, value.find(",", 1));
                    }
                    
                    string decodedURL;
                    Poco::URI::decode(value, decodedURL) ;
                    decodedURLs.push_back(decodedURL);
                }
            }
            
        }
        vector<YouTubeVideo> youtubeVideos;
        for(size_t i=0; i<decodedURLs.size(); i++)
        {
            //ofLogVerbose(__func__) << i <<  " url: " << decodedURLs[i];
            YouTubeVideo youtubeVideo = createYouTubeVideoInfo(decodedURLs[i]);
            youtubeVideos.push_back(youtubeVideo);
            
        }
        for(size_t i=0; i<youtubeVideos.size(); i++)
        {
            if(youtubeVideos[i].itag == 17)
            {
                ofLogVerbose() << "youtubeVideo optimal url: " << youtubeVideos[i].url;
                
            }else
            {
                youtubeVideos[i].print();
            }
        }
    }
}