youtube - 视频上传失败 - 无法转换文件 - 视频编码错误？

Question

我使用.NET创建视频上传应用程序。虽然 与YouTube进行通信并上传文件，但是该文件的处理失败。 YouTube向我发送错误讯息“上传失败 （无法转换视频文件）”。据称这意味着，“你 视频采用了我们的转换器无法识别的格式...”

我有两个不同的视频，这两者的上传 和工艺精细，当我做手工尝试。所以我怀疑我的代码是 a。）没有正确编码视频和/或b。）没有正确发送我的API 请求。

下面是我如何构造我的API PUT请求和编码 视频：

任何建议什么错误可能是，将不胜感激。

谢谢

P.S.我没有使用客户端库，因为我的应用程序将使用 可恢复的上载功能。因此，我手动构建我的API 请求。

文档：http://code.google.com/intl/ja/apis/youtube/2.0/developers_guide_protocol_resumable_uploads.html#Uploading_the_Video_File

代码：

  // new PUT request for sending video 
      WebRequest putRequest = WebRequest.Create(uploadURL); 

      // set properties 
      putRequest.Method = "PUT"; 
      putRequest.ContentType = getMIME(file); //the MIME type of the uploaded video file 

      //encode video 
      byte[] videoInBytes = encodeVideo(file); 

    public static byte[] encodeVideo(string video) 
    { 
     try 
     { 
      byte[] fileInBytes = File.ReadAllBytes(video); 
      Console.WriteLine("\nSize of byte array containing " + video + ": " + fileInBytes.Length); 
      return fileInBytes; 
     } 
     catch (Exception e) 
     { 
      Console.WriteLine("\nException: " + e.Message + "\nReturning an empty byte array"); 
      byte [] empty = new byte[0]; 
      return empty; 
     } 
    }//encodeVideo 

      //encode custom headers in a byte array 
      byte[] PUTbytes = encode(putRequest.Headers.ToString()); 

      public static byte[] encode(string headers) 
      {    
       ASCIIEncoding encoding = new ASCIIEncoding(); 
       byte[] bytes = encoding.GetBytes(headers); 
       return bytes; 
      }//encode 

      //entire request contains headers + binary video data 
      putRequest.ContentLength = PUTbytes.Length + videoInBytes.Length; 

      //send request - correct? 
      sendRequest(putRequest, PUTbytes); 
      sendRequest(putRequest, videoInBytes); 

    public static void sendRequest(WebRequest request, byte[] encoding) 
    { 
     Stream stream = request.GetRequestStream(); // The GetRequestStream method returns a stream to use to send data for the HttpWebRequest. 

     try 
     { 
      stream.Write(encoding, 0, encoding.Length); 

     } 
     catch (Exception e) 
     { 
      Console.WriteLine("\nException writing stream: " + e.Message); 
     } 
    }//sendRequest 

Answer 1

我不知道是什么格式的YouTube正在寻找，但如果它应该是你的Windows系统上识别的格式，我建议你保存将转换的视频转换为磁盘上的文件，然后尝试打开它。

Answer 2

发送请求分两部分完成...您发送标题，包括视频的大小，因为您有... YouTube用URL回应，并将视频发送到该URL ..看起来像你正试图发送一个请求中的所有内容。有点像这样。

Try 
     Try 
      _request = CType(WebRequest.Create(_requestUrl), HttpWebRequest) 

      With _request 
       .ContentType = "application/atom+xml; charset=UTF-8" 
       .ContentLength = _postBytes.Length 
       .Method = "POST" 
       .Headers.Add("Authorization", String.Format("GoogleLogin auth={0}", MasterAccessToken.ClientLoginToken)) 
       .Headers.Add("GData-Version", "2") 
       .Headers.Add("X-GData-Key", String.Format("key={0}", YouTube.Constants.Security.DEVELOPERKEY)) 
       .Headers.Add("Slug", filename) 
      End With 

      _writeStream = _request.GetRequestStream 
      With _writeStream 
       .Write(_postBytes, 0, _postBytes.Length) 
      End With 

      Using _response = CType(_request.GetResponse, HttpWebResponse) 
       With _response 
        If .StatusCode = HttpStatusCode.OK OrElse .StatusCode = HttpStatusCode.Created Then 
         _ans = _response.Headers("Location") 
        Else 
         Throw New WebException("Cannot get ClientLogin upload location", Nothing, WebExceptionStatus.ProtocolError, _response) 
        End If 
       End With 
      End Using 

     Catch ex As Exception 

     Finally 
      If _writeStream IsNot Nothing Then 
       _writeStream.Close() 
      End If 

     End Try 

     _videoUploadLocation = _ans 

     'Got the upload location..... now get the file 
     Dim _file As FileInfo = New FileInfo(filename) 
     Dim _fileLength As Integer 

     Using _fileStream As System.IO.FileStream = _file.OpenRead 
      _fileLength = CType(_fileStream.Length, Integer) 

      If _fileLength = 0 Then 
       Throw New FileLoadException("File appears to be of zero length in UploadVideoFromFileClientLogin:", filename) 
      End If 

      'create the webrequest 
      _request = CType(WebRequest.Create(_videoUploadLocation), HttpWebRequest) 

      'No authentication headers needed.. 
      With _request 
       .Timeout = 6000000  'Timeout for this request changed to 10 minutes 
       .ReadWriteTimeout = 6000000 
       .KeepAlive = True 
       .ContentType = "application/octet-stream" 
       .ContentLength = _fileLength 
       .Method = "POST" 
      End With 

      'and get the stream 
      _writeStream = _request.GetRequestStream 

      'And send it over the net 
      m_StreamUtils.CancelRequest = False 
      m_StreamUtils.SendStreamToStream(_fileStream, _writeStream, AddressOf UploadPogressChanged) 
      m_CancelRequest = m_StreamUtils.CancelRequest 
     End Using 

     If Not (m_CancelRequest) Then 

      Using _response = CType(_request.GetResponse, HttpWebResponse) 
       With _response 
        If .StatusCode = HttpStatusCode.Created Then 
         _ans = _response.ResponseUri.AbsoluteUri 
        Else 
         Throw New WebException("Cannot get ClientLogin upload location", Nothing, WebExceptionStatus.ProtocolError, _response) 
        End If 
       End With 
      End Using 
     Else 
      _ans = String.Empty 

     End If 

     If _writeStream IsNot Nothing Then 
      _writeStream.Close() 
     End If