在curl上使用curlpp从youtube下载flv-视频不播放

为了从youtube下载视频,我在curl lib上使用curlpp。

我已经设法下载了flv,但无法打开它使用各种各样的视频播放器。

我使用了另一个youtube视频下载程序,下载了完全相同的视频,质量完全相同,我注意到请求是相同的,而且文件大小几乎相同-我认为问题出在这里,例如:我的视频.flv-455万工作视频.flv-453万

// Callback Function size_t FileCallback(FILE f, char ptr, size_t size, size_t nmemb) { return fwrite(ptr, size, nmemb, f); }

void GetVideo(std::wstring videoUrl)

    FILE * file = fopen("C:\\locatin\\b.flv", "w");

if (file)
{
    curlpp::Cleanup cleaner;
    curlpp::Easy request;

    // Set the writer callback to enable cURL to write result in a memory area
    curlpp::types::WriteFunctionFunctor functor(utilspp::BindFirst(utilspp::make_functor(&FileCallback), file));
    curlpp::options::WriteFunction *getFileOpt = new curlpp::options::WriteFunction(functor);
    request.setOpt(getFileOpt);

    // Setting the URL to retrive.
    request.setOpt(new curlpp::options::Url(videoUrl));
    request.setOpt(new curlpp::options::Verbose(true));
    request.setOpt(new Timeout(2000));

    std::list<std::string> headers;
    headers.push_back("Connection: keep-alive");
    headers.push_back("Keep-Alive: 115");
    headers.push_back("Accept-Encoding: gzip,deflate");
    headers.push_back("Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7");
    headers.push_back("User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.10) Gecko/20100914 Firefox/3.6.10");
    headers.push_back("Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
    headers.push_back("Accept-Language: en-us,en;q=0.5");

    request.setOpt<HttpHeader>(headers);
    request.perform();

    fclose(file);
}

}

有什么想法吗??