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• How to convert video file to audio file by using FFMPEG ?

  15 janvier 2020, par Aamir Naseer

  I’m making video to audio converter app but need help to convert video to audio using ffmpeg. I checked many answers and websites but their answers are not easy to understand and I’m confused with command that is used to convert. What is the proper command to convert video to audio and is I’m executing the command in right way ?

  public class VideoConvertActivity extends AppCompatActivity {
  
  
  
      private VideoView videoView;
  
      private Button convertButton;
  
      private String filePath;
  
      private FFmpeg ffmpeg;
  
  
  
  
  
      @Override
  
      protected void onCreate(Bundle savedInstanceState) {
  
          super.onCreate(savedInstanceState);
  
          setContentView(R.layout.activity_video_convert);
  
  
  
          videoView = findViewById(R.id.videoviewID);
  
          convertButton = findViewById(R.id.convertbuttonID);
  
  
  
          ffmpeg = FFmpeg.getInstance(VideoConvertActivity.this);
  
  
  
  // in variable video i'm getting the path of video path from previous activity through intent and that video will have to convert to audio file
  
          Intent extras = getIntent();
  
          final String video = extras.getStringExtra("video");
  
  
  
          videoView.setVideoPath(video);
  
          videoView.start();
  
  
  
          convertButton.setOnClickListener(new View.OnClickListener() {
  
              @Override
  
              public void onClick(View v) {
  
  
  
                  try {
  
  
  
                      File moviesDir = Environment.getExternalStoragePublicDirectory(
  
                              Environment.DIRECTORY_MUSIC
  
                      );
  
  
  
                      String filePrefix = "convert_audio";
  
                      String fileExtn = ".mp3";
  
                      File dest = new File(moviesDir, filePrefix + fileExtn);
  
  
  
                      int fileNo = 0;
  
                      while (dest.exists()) {
  
                          fileNo++;
  
                          dest = new File(moviesDir, filePrefix + fileNo + fileExtn);
  
                      }
  
                      filePath = dest.getAbsolutePath();
  
  
  
                      // to execute "ffmpeg -version" command you just need to pass "-version"
  
                      String[] command = {"-y", "-i", video, "-vn", "-ar", "44100", "-ac", "2", "-b:a", "256k", "-f", "mp3", filePath};
  
                      ffmpeg.execute(command, new ExecuteBinaryResponseHandler() {
  
  
  
                          @Override
  
                          public void onStart() {
  
                              Toast.makeText(VideoConvertActivity.this,"Started",Toast.LENGTH_LONG).show();
  
                          }
  
  
  
                          @Override
  
                          public void onProgress(String message) {
  
                              Toast.makeText(VideoConvertActivity.this,"Progress",Toast.LENGTH_LONG).show();
  
                          }
  
  
  
                          @Override
  
                          public void onFailure(String message) {
  
                              Toast.makeText(VideoConvertActivity.this,"Failed",Toast.LENGTH_LONG).show();
  
                          }
  
  
  
                          @Override
  
                          public void onSuccess(String message) {
  
                              Toast.makeText(VideoConvertActivity.this,"Succeed",Toast.LENGTH_LONG).show();
  
                          }
  
  
  
                          @Override
  
                          public void onFinish() {
  
                              Toast.makeText(VideoConvertActivity.this,"Finished",Toast.LENGTH_LONG).show();
  
                          }
  
                      });
  
                  } catch (FFmpegCommandAlreadyRunningException e) {
  
                      // Handle if FFmpeg is already running
  
                  }
  
  
  
                   Toast.makeText(VideoConvertActivity.this,"Converted Successfully",Toast.LENGTH_SHORT).show();
  
  
  
              }
  
          });
  
  
  
      }
  
  
  
  }

• Invalid argument error in writing video file using moviepy and ffmpeg

  28 janvier 2024, par Kresreb

  I have this code that used to work fine and now isn't. I have this error :

  


      Traceback (most recent call last):&#xA;  File "D:\videos\tiktoks\faitsasavoir\bot\mre.py", line 18, in <module>&#xA;    clip_final.write_videofile(f"rendus_finaux/output.mp4", fps=24)&#xA;  File "", line 2, in write_videofile&#xA;  File "C:\Users\Brice\AppData\Local\Programs\Python\Python39\lib\site-packages\moviepy\decorators.py", line 54, in requires_duration&#xA;    return f(clip, *a, **k)&#xA;  File "", line 2, in write_videofile&#xA;  File "C:\Users\Brice\AppData\Local\Programs\Python\Python39\lib\site-packages\moviepy\decorators.py", line 135, in use_clip_fps_by_default&#xA;    return f(clip, *new_a, **new_kw)&#xA;  File "", line 2, in write_videofile&#xA;  File "C:\Users\Brice\AppData\Local\Programs\Python\Python39\lib\site-packages\moviepy\decorators.py", line 22, in convert_masks_to_RGB&#xA;    return f(clip, *a, **k)&#xA;  File "C:\Users\Brice\AppData\Local\Programs\Python\Python39\lib\site-packages\moviepy\video\VideoClip.py", line 300, in write_videofile&#xA;    ffmpeg_write_video(self, filename, fps, codec,&#xA;  File "C:\Users\Brice\AppData\Local\Programs\Python\Python39\lib\site-packages\moviepy\video\io\ffmpeg_writer.py", line 228, in ffmpeg_write_video&#xA;    writer.write_frame(frame)&#xA;  File "C:\Users\Brice\AppData\Local\Programs\Python\Python39\lib\site-packages\moviepy\video\io\ffmpeg_writer.py", line 180, in write_frame&#xA;    raise IOError(error)&#xA;OSError: [Errno 22] Invalid argument&#xA;&#xA;MoviePy error: FFMPEG encountered the following error while writing file rendus_finaux/output.mp4:&#xA;&#xA; b&#x27;rendus_finaux/output.mp4: No such file or directory\r\n&#x27;&#xA;</module>

  


  It tried different versions of moviepy, Python and reinstalling ffmpeg etc, but couldn't solve it. My main idea is that is a version problem, but i can't find out.

  


  I recreated the error with this mre, it's just a code to make a video from multiple images. Thank you for your help.

  


  from moviepy.editor import ImageClip, CompositeVideoClip, concatenate_videoclips
    
    DURATION_PER_IMAGE = 5
    
    images = ["D:/videos/image1.png","D:/videos/image1.jpg"]
    
    clips = []
    for image in images:
        #Main image
        clip = ImageClip(image).set_duration(DURATION_PER_IMAGE).resize(width=1080)
        clip = clip.resize(lambda t : 1+0.02*t)
    
        #Create clip composite
        clip_composite = CompositeVideoClip([clip.set_position("center")], size=(1080,1920))
        clips.append(clip_composite) # Add created clip to the list of clips
    
    clip_final = concatenate_videoclips(clips)
    clip_final.write_videofile(f"rendus_finaux/output.mp4", fps=24)


  


• Unable to extract KLV data from .mpg file

  2 novembre 2023, par Arjun Shastry

  I need to extract the klv data embedded in the following file :
https://samples.ffmpeg.org/MPEG2/mpegts-klv/Day%20Flight.mpg

  


  Currently, I am doing it using ffmpeg and python.
The code works for .ts files like the example given below, but not the above mpg file. :
https://www.arcgis.com/home/item.html?id=55ec6f32d5e342fcbfba376ca2cc409a

  


  I used the following python command, using subprocess, ffmpeg to extract klv data in a binary file and then using klvdata library to tranlate to a readable text file.

  


  #Extract klv data and output as binary file
command=['ffmpeg', '-i', input_video, '-map', 'd','-codec','copy','-f', 'data','out.bin']
process=subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout, stderr = process.communicate()

print(stdout)
print(stderr)

#Open text file to write json data
outjson=open("./outjson.txt","w")
print("Flag 1")

# Open the out.bin file for reading as binary
with open("./out.bin", "rb") as f:
    sample=[]
    cnt=0
    for packet in klvdata.streamparser.StreamParser(f):
        pack=[]
        metadata = packet.MetadataList()
        for i in (5,6,7,13,14,15,18,19,23,24,25,26,27,28,29,30,31,32,33):#Only extracting required data
            pack.append(metadata[i][-1])
        sample.append(pack)
    sampleLength=(len(sample))
    json.dump(sample,outjson,indent=4) # Convert the metadata to a string and write it to outtext.txt


  


  When doing it for "Day Flight.mpg", the following error occurs :

  


  58. 19.100 / 58. 19.100\r\n  libavcodec     60. 26.100 / 60. 26.100\r\n  libavformat    60. 11.100 / 60. 11.100\r\n  libavdevice    60.  2.101 / 60.  2.101\r\n  libavfilter     9. 11.100 /  9. 11.100\r\n  libswscale      7.  3.100 /  7.  3.100\r\n  libswresample   4. 11.100 /  4. 11.100\r\n  libpostproc    57.  2.100 / 57.  2.100\r\n[mpegts @ 0000026bb99387c0] start time for stream 1 is not set in estimate_timings_from_pts\r\nInput #0, mpegts, from 'C:/Users/ashastry/Downloads/Day Flight.mpg':\r\n  Duration: 00:03:14.88, start: 10.000000, bitrate: 4187 kb/s\r\n  Program 1 \r\n  Stream #0:0[0x1e1]: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p(progressive), 1280x720, 60 fps, 60 tbr, 90k tbn\r\n  Stream #0:1[0x1f1]: Data: klv (KLVA / 0x41564C4B)\r\nOutput #0, data, to 'out.bin':\r\n  Metadata:\r\n    encoder         : Lavf60.11.100\r\n  Stream #0:0: Data: klv (KLVA / 0x41564C4B)\r\nStream mapping:\r\n  Stream #0:1 -> #0:0 (copy)\r\nPress [q] to stop, [?] for help\r\nsize=       0kB time=00:00:00.00 bitrate=N/A speed=N/A    \rsize=       0kB time=00:00:00.00 bitrate=N/A speed=   0x    \rsize=       1kB time=00:00:00.00 bitrate=N/A speed=   0x    \r[out#0/data @ 0000026bbb61b300] video:0kB audio:0kB subtitle:0kB other streams:1kB global headers:0kB muxing overhead: 0.000000%\r\nsize=       1kB time=00:00:00.00 bitrate=N/A speed=   0x    \r\n"
Flag 1
Traceback (most recent call last):

  File C:\ProgramData\anaconda3\Lib\site-packages\spyder_kernels\py3compat.py:356 in compat_exec
    exec(code, globals, locals)

  File c:\users\ashastry\desktop\gis\javascript\extract.py:34
    metadata = packet.MetadataList()

AttributeError: 'UnknownElement' object has no attribute 'MetadataList'