如何在UWP应用程序中播放tube视频

<MediaElement x:Name="mediaPlayer" AutoPlay="True" />

private async void PlayTubeVideo()
{
    // 使用HttpClient获取Tube视频的URL
    HttpClient httpClient = new HttpClient();
    string videoUrl = await httpClient.GetStringAsync("https://www.youtube.com/get_video_info?video_id={video_id}");

    // 解析视频URL
    string[] videoParams = videoUrl.Split('&');
    string videoStreamUrl = string.Empty;
    foreach (string param in videoParams)
    {
        if (param.StartsWith("url_encoded_fmt_stream_map"))
        {
            videoStreamUrl = Uri.UnescapeDataString(param.Split('=')[1]);
            break;
        }
    }

    // 解码视频URL
    string decodedUrl = Uri.UnescapeDataString(videoStreamUrl);
    string[] videoUrls = decodedUrl.Split(',');

    // 获取最高质量的视频URL
    string highestQualityUrl = string.Empty;
    foreach (string url in videoUrls)
    {
        if (url.Contains("type=video/mp4"))
        {
            highestQualityUrl = url.Split('=')[1];
            break;
        }
    }

    // 设置MediaElement的Source为视频URL
    mediaPlayer.Source = new Uri(highestQualityUrl);
}