Recherche avancée

Sur d’autres sites (10307)

• Convert wma stream to mp3 stream with C# and ffmpeg

  24 septembre 2012, par user1363468

  Is it possible to convert a wma stream to an mp3 stream real time ?

  I have tried doing something like this but not having any luck :

      WebRequest request = WebRequest.Create(wmaUrl);
  
      HttpWebResponse response = (HttpWebResponse)request.GetResponse();
  
      int block = 32768;
  
      byte[] buffer = new byte[block];
  
  
  
      Process p = new Process();
  
      p.StartInfo.UseShellExecute = false;
  
      p.StartInfo.ErrorDialog = false;
  
      p.StartInfo.RedirectStandardInput = true;
  
      p.StartInfo.RedirectStandardOutput = true;
  
      p.StartInfo.RedirectStandardError = true;
  
      p.StartInfo.FileName = "c:\\ffmpeg.exe";
  
      p.StartInfo.Arguments = "-i - -y -vn -acodec libspeex -ac 1 -ar 16000 -f mp3 ";
  
  
  
      StringBuilder output = new StringBuilder();
  
  
  
      p.OutputDataReceived += (sender, e) =>
  
      {
  
        if (e.Data != null)
  
        {
  
          output.AppendLine(e.Data);
  
          //eventually replace this with response.write code for a web request
  
        }
  
      };
  
  
  
      p.Start();
  
      StreamWriter ffmpegInput = p.StandardInput;
  
  
  
      p.BeginOutputReadLine();
  
  
  
      using (Stream dataStream = response.GetResponseStream())
  
      {
  
         int read = dataStream.Read(buffer, 0, block);
  
  
  
         while (read > 0)
  
         {
  
            ffmpegInput.Write(buffer);
  
            ffmpegInput.Flush();
  
            read = dataStream.Read(buffer, 0, block);
  
         }
  
      }
  
  
  
      ffmpegInput.Close();
  
  
  
      var getErrors = p.StandardError.ReadToEnd();

  Just wondering if what I am trying to do is even possible (Convert byte blocks of wma to byte blocks of mp3). Open to any other possible C# solutions if they exist.

  Thanks

• How to convert video file to all formats using ffmpeg ? [closed]

  14 février 2013, par Lex

  How to convert 1 file to many files with different formats using ffmpeg ?

• fastest way to convert any audio file to low bitrate ? [migrated]

  16 février 2013, par kain

  using ffmpeg I'd like to have some directions/parameters to :

  • encode any audio file to a poor bitrate
  • strip artwork from file
  • optimize for speed
  • optimize for size

  My goal is to have a bare-bone file encoded in mp3 in the fastest time possible, quality does not matter (even 96kbps or less), it just needs to be extremely fast and result in small size.

  Any preset to share ?