internal YoutubeVideo(string title, UnscrambledQuery query, string jsPlayer)
{
_title = title;
_uri = query.Uri;
_jsPlayer = jsPlayer;
_encrypted = query.IsEncrypted;
_formatCode = int.Parse(new Query(_uri)["itag"]);
}
internal YouTubeVideo(string title,
UnscrambledQuery query, string jsPlayer)
{
this.Title = title;
this.uri = query.Uri;
this.jsPlayer = jsPlayer;
this.encrypted = query.IsEncrypted;
this.FormatCode = int.Parse(new Query(uri)["itag"]);
}
internal YouTubeVideo(VideoInfo info, UnscrambledQuery query, string jsPlayer)
{
this.Info = info;
this.Title = info?.Title;
this.uri = query.Uri;
this.uriQuery = new Query(uri);
this.jsPlayer = jsPlayer;
this.encrypted = query.IsEncrypted;
this.FormatCode = int.Parse(uriQuery["itag"]);
}
internal YouTubeVideo(string title,
UnscrambledQuery query, string jsPlayer)
{
this.Title = title;
this.uri = query.Uri;
this.jsPlayer = jsPlayer;
if (DFunctionRegex == null)
{
DFunctionRegex = new Regex(Task.Run(GetDecryptRegex).Result);
}
this.encrypted = query.IsEncrypted;
this.FormatCode = int.Parse(new Query(uri)["itag"]);
}
internal YouTubeVideo(string title, UnscrambledQuery query, string jsPlayer, bool manifestExist = false)
{
this.Title = title;
this.uri = query.Uri;
this.jsPlayer = jsPlayer;
this.encrypted = query.IsEncrypted;
if (manifestExist)
{
// Link contain "key/value"
// separated by slash
string x = uri.Substring(uri.IndexOf("itag/") + 5, 3);
x = x.TrimEnd('/'); // In case format is 2-digit
this.FormatCode = int.Parse(x);
}
else
{
this.FormatCode = int.Parse(new Query(uri)["itag"]);
}
}
private IEnumerable <YouTubeVideo> ParseVideos(string source)
{
IEnumerable <UnscrambledQuery> queries;
string jsPlayer = ParseJsPlayer(source);
if (jsPlayer == null)
{
yield break;
}
var playerResponseMap = Json.GetKey("player_response", source);
var playerResponseJson = JToken.Parse(Regex.Unescape(playerResponseMap).Replace(@"\u0026", "&"));
if (string.Equals(playerResponseJson.SelectToken("playabilityStatus.status")?.Value <string>(), "error", StringComparison.OrdinalIgnoreCase))
{
throw new UnavailableStreamException($"Video has unavailable stream.");
}
var errorReason = playerResponseJson.SelectToken("playabilityStatus.reason")?.Value <string>();
if (string.IsNullOrWhiteSpace(errorReason))
{
var isLiveStream = playerResponseJson.SelectToken("videoDetails.isLive")?.Value <bool>() == true;
string title = playerResponseJson.SelectToken("videoDetails.title")?.Value <string>();
if (isLiveStream)
{
throw new UnavailableStreamException($"This is live stream so unavailable stream.");
}
// url_encoded_fmt_stream_map
string map = Json.GetKey("url_encoded_fmt_stream_map", source);
if (!string.IsNullOrWhiteSpace(map))
{
queries = map.Split(',').Select(Unscramble);
foreach (var query in queries)
{
yield return(new YouTubeVideo(title, query, jsPlayer));
}
}
else // player_response
{
List <JToken> streamObjects = new List <JToken>();
// Extract Muxed streams
var streamFormat = playerResponseJson.SelectToken("streamingData.formats");
if (streamFormat != null)
{
streamObjects.AddRange(streamFormat.ToArray());
}
// Extract AdaptiveFormat streams
var streamAdaptiveFormats = playerResponseJson.SelectToken("streamingData.adaptiveFormats");
if (streamAdaptiveFormats != null)
{
streamObjects.AddRange(streamAdaptiveFormats.ToArray());
}
foreach (var item in streamObjects)
{
var urlValue = item.SelectToken("url")?.Value <string>();
if (!string.IsNullOrEmpty(urlValue))
{
var query = new UnscrambledQuery(urlValue, false);
yield return(new YouTubeVideo(title, query, jsPlayer));
continue;
}
var cipherValue = (item.SelectToken("cipher") ?? item.SelectToken("signatureCipher")).Value <string>();
if (!string.IsNullOrEmpty(cipherValue))
{
yield return(new YouTubeVideo(title, Unscramble(cipherValue), jsPlayer));
}
}
}
// adaptive_fmts
string adaptiveMap = Json.GetKey("adaptive_fmts", source);
if (!string.IsNullOrWhiteSpace(adaptiveMap))
{
queries = adaptiveMap.Split(',').Select(Unscramble);
foreach (var query in queries)
{
yield return(new YouTubeVideo(title, query, jsPlayer));
}
}
else
{
// dashmpd
string dashmpdMap = Json.GetKey("dashmpd", source);
if (!string.IsNullOrWhiteSpace(adaptiveMap))
{
using (HttpClient hc = new HttpClient())
{
IEnumerable <string> uris = null;
try
{
dashmpdMap = WebUtility.UrlDecode(dashmpdMap).Replace(@"\/", "/");
var manifest = hc.GetStringAsync(dashmpdMap)
.GetAwaiter().GetResult()
.Replace(@"\/", "/");
uris = Html.GetUrisFromManifest(manifest);
}
catch (Exception e)
{
throw new UnavailableStreamException(e.Message);
}
if (uris != null)
{
foreach (var v in uris)
{
yield return(new YouTubeVideo(title,
UnscrambleManifestUri(v),
jsPlayer));
}
}
}
}
}
}
}
