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• Extract audio from video in mp3 format using android-ffmpeg-library

  28 mai 2014, par user2870161

  I want extrat audio from any type of video file and save it in mp3 format using android-ffmpeg-library.

  My most of work is done here i am create wav file using this code but problame is when i create mp3 file it make only 0kb file in sdcard.

  I hope I’ve made myself clear, and thanks for taking the time to read this.

      if (inputPath == null || outputPath == null) {
  
          throw new IllegalStateException("Need an input and output filepath!");
  
      }   
  
  
  
      final List<string> cmd = new LinkedList<string>();
  
  
  
  
  
      String baseDir = Environment.getExternalStorageDirectory().getAbsolutePath();
  
      String fileName = "3.mp4";
  
      String fileName1 = "2.mp3";
  
  
  
      String path  = baseDir + "/" + fileName;
  
      String path1  = baseDir + "/" + fileName1;
  
  
  
        File f = new File(path);
  
  
  
        if(f.exists()){
  
            System.out.println("File existed");
  
        }else{
  
            System.out.println("File not found!");
  
        }
  
  
  
        cmd.add(mFfmpegPath);
  
        cmd.add("-i");
  
        cmd.add(path);
  
  
  
        cmd.add("-vn");
  
        cmd.add("-acodec");
  
        cmd.add("copy");
  
  
  
        cmd.add(path1);
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
      final ProcessBuilder pb = new ProcessBuilder(cmd);
  
      return new ProcessRunnable(pb);
  
  </string></string>

• How to Write the Numpy array video to Disk While adding Audio from File using the python ffmpegio

  31 décembre 2023, par soham tilekar

  I Have an A NumPy array Representing the Video in the memory how Can I Use the ffmpegio python module to save it on the File on the disk While adding the audio.

  


  I Try Many things. I Also Ask answer on the python-ffmpegio github page.
Discussinnon link

  


  The Whole module Code is on the vidiopy

  


  I Get an Error : -

  


  Traceback (most recent call last):&#xA;  File "d:\soham_code\video_py\test.py", line 5, in <module>&#xA;    clip.write_videofile(r&#x27;D:\soham_code\video_py\test\test_video.mp4&#x27;)&#xA;  File "d:\soham_code\video_py\vidiopy\video\VideoClips.py", line 190, in write_videofile&#xA;    with ffmpegio.open(&#xA;  File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python312\Lib\contextlib.py", line 137, in __enter__&#xA;    return next(self.gen)&#xA;           ^^^^^^^^^^^^^^&#xA;  File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python312\Lib\site-packages\ffmpegio\__init__.py", line 324, in open&#xA;    stream = StreamClass(*args, **kwds)&#xA;             ^^^^^^^^^^^^^^^^^^^^^^^^^^&#xA;  File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python312\Lib\site-packages\ffmpegio\streams\SimpleStreams.py", line 489, in __init__&#xA;    super().__init__(&#xA;  File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python312\Lib\site-packages\ffmpegio\streams\SimpleStreams.py", line 365, in __init__&#xA;    configure.add_url(ffmpeg_args, "input", *input)&#xA;TypeError: add_url() takes from 3 to 5 positional arguments but 765 were given&#xA;</module>

  


  Modified Code : -

  


      def write_videofile(self, filename, fps=None, codec=None,   
                        bitrate=None, audio=True, audio_fps=44100,
                        preset="medium", pixel_format=None,
                        audio_codec=None, audio_bitrate=None,
                        write_logfile=False, verbose=True,
                        threads=None, ffmpeg_params: dict[str, str] | None = None,
                        logger='bar', over_write_output=True):
        
        # video_np = np.asarray(tuple(self.iterate_frames_array_t(fps if fps else self.fps if self.fps else (_ for _ in ()
        #                                                                                                     ).throw(Exception('Make Frame is Not Set.')))))

        audio_name, _ = os.path.splitext(filename)


        ffmpeg_options = {
            'preset': preset,
            
            **(ffmpeg_params if ffmpeg_params is not None else {}),
            **({'c:v': codec} if codec else {}),
            **({'b:v': bitrate} if bitrate else {}),
            **({'pix_fmt': pixel_format} if pixel_format else {}),
            **({'c:a': audio_codec} if audio_codec else {}),
            **({'ar': audio_fps} if audio_fps else {}),
            **({'b:a': audio_bitrate} if audio_bitrate else {}),
            **({'threads': threads} if threads else {}),
        }

        with tempfile.NamedTemporaryFile(
            suffix=".wav", prefix=audio_name + "_temp_audio_"
        ) as temp_audio_file:
            if self.audio and audio:
                self.audio.write_audio_file(temp_audio_file)
                # audio_file_name = temp_audio_file.name

                ffmpeg_options.update(
                    {"extra_inputs": [temp_audio_file.name], "acodec": "copy", "map": ["0:v", "1:a"]}
                )

            with ffmpegio.open(
                filename,
                "wv",
                fps,
                **ffmpeg_options,
                overwrite=over_write_output,
                show_log=True,) as f:
                
                for I in self.iterate_frames_array_t(fps):  # if fps else self.fps if self.fps else (_ for _ in ()
                #                                                                                             ).throw(Exception('Make Frame is Not Set.'))):
                    f.write(I)


  


  I Tried Many things : -
using transcode, providing the -i flag with audio name While using the ffmpegio.write, etc.

  


• Write tests to check if a ffmpeg is installed

  7 novembre 2018, par gldraphael

  TLDR : I need a test that ensures FooAsync() throws FfmpegNotFoundInPathException if ffmpeg is not in path.

  ---

  I have a method like :

  public Task FooAsync() { /* ... */ }

  that throws an FfmpegNotFoundInPathException if ffmpeg is not in path.
  How do I go about writing tests for this ?

  (It’s okay if the test passes only within docker. I can selectively skip the test outside of Docker using Nate McMaster’s xunit extensions.)

  ---

  For completeness, FooAsync() looks something like this :

  public async Task FooAsync()
  
  {
  
      try
  
      {
  
          new Cli("ffmpeg")
  
              .SetArguments(args)
  
              .EnableStandardErrorValidation(false)
  
              .ExecuteAsync();
  
      }
  
      catch (Exception e)
  
      {
  
          // ...
  
          throw new FfmpegNotFoundInPathException(e);
  
      }
  
  }

  (Cli is from the CliWrap package.)