/// <summary>
/// Obtiene la Url de un vídeo de YouTube
/// </summary>
public async Task <string> GetUriYouTubeVideoAsync(string videoCode)
{
try
{
Tools.YouTubeUri uri = (await new Tools.YouTube().GetVideoUriAsync(videoCode, Tools.YouTubeUri.YouTubeQuality.QualityMedium));
if (uri != null)
{
return(uri.Uri.ToString());
}
else
{
return(null);
}
}
catch (Exception exception)
{
System.Diagnostics.Debug.WriteLine(exception.Message);
return(null);
}
}
/// <summary>Returns all available URIs (audio-only and video) for the given YouTube ID. </summary>
public async Task <YouTubeUri[]> GetUrisAsync(string youTubeId, CancellationToken token)
{
YouTubeDecipherer decipherer = new YouTubeDecipherer();
var urls = new List <YouTubeUri>();
string javaScriptCode = null;
var response = await HttpGetAsync($"https://www.youtube.com/watch?v={youTubeId}&nomobile=1", token);
var match = Regex.Match(response, "url_encoded_fmt_stream_map\": ?\"(.*?)\"");
var data = Uri.UnescapeDataString(match.Groups [1].Value);
match = Regex.Match(response, "adaptive_fmts\": ?\"(.*?)\"");
var data2 = Uri.UnescapeDataString(match.Groups [1].Value);
var arr = Regex.Split($"{data},{data2}", ",(?=(?:[^\"]*\"[^\"]*\")*[^\"]*$)"); // split by comma but outside quotes
foreach (var d in arr)
{
string url = "";
string signature = "";
YouTubeUri tuple = new YouTubeUri();
foreach (var p in d.Replace("\\u0026", "\t").Split('\t'))
{
int index = p.IndexOf('=');
if (index != -1 && index < p.Length)
{
try
{
string key = p.Substring(0, index);
string value = Uri.UnescapeDataString(p.Substring(index + 1));
if (key == "url")
{
url = value;
}
else if (key == "itag")
{
tuple.Itag = int.Parse(value);
}
else if (key == "type" && (value.Contains("video/mp4") || value.Contains("audio/mp4")))
{
tuple.Type = value;
}
else if (key == "sig")
{
signature = value;
}
else if (key == "s")
{
if (javaScriptCode == null)
{
string javaScriptUri;
Match urlMatch = Regex.Match(response, "\"\\\\/\\\\/s.ytimg.com\\\\/yts\\\\/jsbin\\\\/html5player-(.+?)\\.js\"");
if (urlMatch.Success)
{
javaScriptUri = $"http://s.ytimg.com/yts/jsbin/html5player-{urlMatch.Groups[1]}.js";
}
else
{
// new format
javaScriptUri = "https://s.ytimg.com/yts/jsbin/player-" +
Regex.Match(response, "\"\\\\/\\\\/s.ytimg.com\\\\/yts\\\\/jsbin\\\\/player-(.+?)\\.js\"").Groups[1] + ".js";
}
javaScriptCode = await HttpGetAsync(javaScriptUri, token);
}
signature = decipherer.Decipher(value, javaScriptCode);
}
}
catch (Exception exception)
{
throw new YouTubeUriException($"YouTube parse exception: {exception.Message}");
}
}
}
if (!string.IsNullOrEmpty(url))
{
if (url.Contains("&signature=") || url.Contains("?signature="))
{
tuple.Uri = new Uri(url, UriKind.Absolute);
}
else
{
tuple.Uri = new Uri(url + "&signature=" + signature, UriKind.Absolute);
}
if (tuple.IsValid)
{
urls.Add(tuple);
}
}
}
return(urls.ToArray());
}
