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• Resize wma audio files using ffmpeg

  24 juin 2016, par Jinto John

  While I am trying to convert wav file to wma file ,File size is becomes double from original source file, Is there any way to reduce file size of target file.
  and my code is. I use FFmpeg.exe-Its a Executable file and I am saved FFmpeg.exe in my bin folder.

  public void ConvertToWAV()
  
  {
  
      DataTable dtNew = new DataTable();
  
      dtNew.Columns.Add("File");
  
      dtNew.Columns.Add("Status");
  
  
  
      DataRow drow = dtNew.NewRow();
  
      int i = 0;
  
      try
  
      {
  
          string tempFilePath = string.Empty;
  
          string tempWMAFilePath = string.Empty;
  
          string FileName1 = string.Empty;
  
          string tempFilePathMp3 = string.Empty;
  
          string DestinationPath = string.Empty;
  
          string[] Filename = null;
  
          string DestiFilename1 = null;
  
          string[] DestiFilename = null;
  
          string[] Destination = null;
  
          long FileSizeMp3 = 0;
  
          FileName1 = @"D:\wma\"+"45550_AnRepository"+".wma";
  
          DestiFilename1 = @"D:\WMAConvert\" + "45550_AnRepository" + ".wav";
  
          FileName1 = FileName1.Replace(@"\", "/");
  
          Filename = FileName1.Split('/');
  
          DestiFilename1 = DestiFilename1.Replace(@"\", "/");
  
          DestiFilename = DestiFilename1.Split('/');
  
          if (Filename.Length == 3)
  
          {
  
              if (Filename[2] != null)
  
              {
  
                  tempFilePath = @"D:\wma\" + Filename[2].ToString();
  
                  tempFilePath = tempFilePath.Replace("/", @"\");
  
                  tempWMAFilePath = @"D:\WMAConvert\" + DestiFilename[2].ToString();
  
                  tempWMAFilePath = tempWMAFilePath.Replace("/", @"\");
  
  
  
                  string audioType = "wav";
  
  
  
  
  
                  if (File.Exists(tempFilePath))
  
                  {
  
                      if (audioType.ToLower().Contains("wav"))
  
                      {
  
                          try
  
                          {
  
                              //using (MemoryStream wav = new MemoryStream(fileData))
  
                              //{
  
                              tempFilePathMp3 = tempFilePath;
  
                              tempFilePathMp3 = tempFilePathMp3.Replace(@"\", "/");
  
                              Destination = tempFilePathMp3.Split('/');
  
                              tempFilePathMp3 = tempFilePathMp3.Replace("/", @"\");
  
                              tempFilePathMp3 = tempFilePathMp3.Replace(".wma", "");
  
                              DestinationPath = "D:\\WMAConvert\\"  + Destination[2];
  
                              tempFilePathMp3 = "D:\\WMAConvert\\" + Destination[2];
  
  
  
                              if (!Directory.Exists(DestinationPath))
  
                              {
  
                                  // Try to create the directory.
  
                                  DirectoryInfo di = Directory.CreateDirectory(DestinationPath);
  
                              }
  
                              tempFilePathMp3 = tempFilePathMp3.Replace(".wma", "");
  
                              if (!File.Exists(tempFilePathMp3 + ".wav"))
  
                              {
  
                                  Process p = new Process();
  
                                  p.StartInfo.WorkingDirectory = AppDomain.CurrentDomain.BaseDirectory;
  
                                  p.StartInfo.FileName = AppDomain.CurrentDomain.BaseDirectory + "\\ffmpeg.exe";
  
                                  p.StartInfo.CreateNoWindow = true;
  
                                  p.StartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
  
                                  p.StartInfo.Arguments = "-i " + tempFilePath + " -q:a 0 \"" + tempFilePathMp3 + ".wav\"";
  
                                  p.Start();
  
                                  p.WaitForExit();
  
                                  p.Close();
  
                              }
  
                              if (File.Exists(tempFilePathMp3 + ".wav"))
  
                              {
  
                                 // tempWMAFilePath = tempFilePathMp3 + ".wav";
  
                                  tempFilePathMp3 = @"D:\CallRecording\" + "45550_AnRepository" + ".wma";
  
                                  Process p2 = new Process();
  
                                  p2.StartInfo.WorkingDirectory = AppDomain.CurrentDomain.BaseDirectory;
  
                                  p2.StartInfo.FileName = AppDomain.CurrentDomain.BaseDirectory + "\\ffmpeg.exe";
  
                                  p2.StartInfo.CreateNoWindow = true;
  
                                  p2.StartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
  
                                //  ffmpeg -i recording.wav -acodec copy newrecording.wma
  
  
  
                                  p2.StartInfo.Arguments = "-i " + tempWMAFilePath + " -acodec copy \"" + tempFilePathMp3;
  
                                  p2.Start();
  
                                  p2.WaitForExit();
  
                                  p2.Close();
  
  
  
                              }
  
  
  
                          }
  
                          catch (Exception ex)
  
                          {
  
                              //We couldn't convert the file, continue with the original file.                        
  
                          }
  
  
  
  
  
                      }
  
                  }
  
              }
  
          }
  
      }
  
      catch (Exception ex)
  
      {
  
  
  
      }
  
  
  
      //dgList.Refresh();
  
  }

• Recording ip camera stream writing video file [closed]

  10 décembre 2020, par Marc

  We are implementing a camera surveillance system project using python with openCV/ffmpeg and Cuda based on client-server architecture, this system should hold up to 40-60 IP cameras for live, record and playback features.

  


  The problem is that their is delay in live view between our program and the web page of the camera and problem in writing frames into video files(recording).

  


  Does the problem due to the used language or a hardware issue, and does python represents the efficient language for this type of projects ?

  


• concat - audio files using FFmpeg not working in above Android 5.1

  15 juin 2016, par Mehul Kabaria

  I am using FFmpeg to concat three Audio file combine into one

  1. audio.m4a (get from assets)
  2. Recorded audio.m4a (Record using MediaRecorder)
  3. audio.m4a (get from assets)

  its works fine in below Android 5.1 but not working on above Android 5.1,
  In above 5.1 recorded audio file not concat (its playing good when i play from saved internal storage its not corrupt recording).

  I am using following command to concat audio files.

  File mergedFile = new File(cacheDir + "/" + String.format("merged_file_%s.m4a", System.currentTimeMillis()));
  
  
  
  final String[] ffmpegCommand = new String[]{ /* this concat only 1st audio*/
  
              "ffmpeg",
  
              "-f",
  
              "concat",
  
              "-i",
  
              list, /* text file which contains full path of audio files*/
  
              "-c",
  
              "copy",
  
              mergedFile.toString()};
  
  
  
  
  
      final String[] ffmpegCommand = new String[]{  /*its working but not concat recorded file*/
  
              "-y",
  
              "-i",
  
              "concat:" + getStaticFilePath() + "|" + getRecordedFilePath() + "|" + getStaticFilePath(),
  
              "-c",
  
              "copy",
  
              mergedFile.toString()};
  
  
  
  
  
      FFmpeg ffmpeg = FFmpeg.getInstance(this);
  
      try {
  
          ffmpeg.loadBinary(new LoadBinaryResponseHandler() {
  
              @Override
  
              public void onFailure() {
  
                  showUnsupportedExceptionDialog();
  
              }
  
          });
  
      } catch (FFmpegNotSupportedException e) {
  
          showUnsupportedExceptionDialog();
  
      }
  
  
  
      try {
  
          ffmpeg.execute(ffmpegCommand, new FFmpegExecuteResponseHandler() {
  
              @Override
  
              public void onFailure(String s) {
  
                  Log.d(TAG, "FAILED with output : " + s);
  
  
  
              }
  
  
  
              @Override
  
              public void onSuccess(String s) {
  
                  Log.d(TAG, "SUCCESS with output : " + s);
  
              }
  
  
  
              @Override
  
              public void onProgress(String s) {
  
                  Log.d(TAG, "Started command : ffmpeg " + ffmpegCommand);
  
              }
  
  
  
              @Override
  
              public void onStart() {
  
  
  
                  Log.d(TAG, "Started command : ffmpeg " + ffmpegCommand);
  
                  Log.d(TAG, "Processing...");
  
              }
  
  
  
              @Override
  
              public void onFinish() {
  
                  Log.d(TAG, "Finished command : ffmpeg " + ffmpegCommand);
  
              }
  
          });
  
      } catch (FFmpegCommandAlreadyRunningException e) {
  
          // do nothing for now
  
      } 

  list is a text file contains path of all audio which i concat

  #ffmpeg.txt
  
  file '/storage/emulated/0/AudioRecorder/radioStatic.m4a'
  
  file '/storage/emulated/0/AudioRecorder/recordedFile.m4a'
  
  file '/storage/emulated/0/AudioRecorder/radioStatic.m4a'