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• ffmpeg with Popen (python) on Windows

  21 août 2018, par Gabrielle

  I am trying to use ffmpeg with Popen. The ffmpeg command I am trying works on cmd but gives me error with Popen.

  I am using the standalone ffmpeg .exe :

  ffmpeg -f gdigrab -offset_x 10 -offset_y 20 -show_region 1 -i desktop -video_size 1536x864 -b:v 2M -maxrate 1M -bufsize 1M -tune fastdecode -crf 15 -preset ultrafast -pix_fmt yuv420p -r 25 <path>/video.mov -qp 1 -y -an
  
  </path>

  This gives me Invalid argument, but if I remove the last parameters in order to make the output the last thing on the string, I get a different error :

  Output file #0 does not contain any stream

  I tried to use -f dshow -i video="UScreenCapture" instead of the gdigrab, but both give me the same error with and without the parameters in the end.

  Both commands work on command line.

  On command line this ffmpeg -list_devices true -f dshow -i dummy returns this :

  [dshow @ 000001b24fa6a300] DirectShow video devices (some may be both video and audio devices)
  
  [dshow @ 000001b24fa6a300]  "Integrated Webcam"
  
  [dshow @ 000001b24fa6a300]     Alternative name "@device_pnp_\\?\usb#vid_1bcf&pid_2b8a&mi_00#6&2c03619a&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global"
  
  [dshow @ 000001b24fa6a300]  "UScreenCapture"
  
  [dshow @ 000001b24fa6a300]     Alternative name "@device_sw_{860BB310-5D01-11D0-BD3B-00A0C911CE86}\UScreenCapture"
  
  [dshow @ 000001b24fa6a300] DirectShow audio devices
  
  [dshow @ 000001b24fa6a300]  "Microphone (Realtek Audio)"
  
  [dshow @ 000001b24fa6a300]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{35EBFC89-7B09-4557-8032-85AA0B688FE9}"

  But on popen I can’t check it :

  -list_devices true -f dshow -i dummy: Invalid argument

  For the python part of the code I am using this :

  p = subprocess.Popen([getPathForFile("windows/ffmpeg").replace('\\','/'),  " -f gdigrab -offset_x 10 -offset_y 20 -show_region 1 -i desktop -video_size 1536x864 -b:v 2M -maxrate 1M -bufsize 1M -tune fastdecode -crf 15 -preset ultrafast -pix_fmt yuv420p -r 25 -qp 1 -y -an "+ path.replace('\\\\','/').replace('\\','/')+"video.mov"], shell=True)

  The getPathForFile is a custom function that returns the path. this is correct, mainly because the errors I am getting are from the ffmpeg, so...

  I am on a Windows 10. FFmpeg 4.0. Python 3.5.

  Any ideas why am I getting these errors on Popen but not on command line and how to fix them ? (mainly the second error)

• mp4 audio file trimming form url

  4 juillet 2021, par Masum

  I am using a URL for audio and the file type is mp4 which comes to URL. Now I want to trim this audio in my system was using Media store. If I use existing audio from media store it's working fine. Now my question how I use my URL mp4 audio using this system or another.

  


      Cursor c = mAdapter.getCursor();
    int dataIndex = c.getColumnIndexOrThrow(MediaStore.Audio.Media.DATA);
    String filename = c.getString(dataIndex);
    try {


        Intent intent = new Intent(getApplicationContext(), RingdroidEditActivity.class);
        intent.putExtra("was_get_content_intent", mWasGetContentIntent);
        intent.putExtra("mFileName", Uri.parse(filename).toString());
        startActivity(intent);

    } catch (Exception e) {
        Log.e("Ringdroid", "Couldn't start editor");
    }


  


  How can pass the same way my URL mp4 file ?

  


  Mp4 auddio : Link

  


• Anomalie #4665 : Err500 timeout sur SL_nettoyer_superflus

  10 mars 2021, par jluc -

  mm sur irc : « la meilleure alternative serait de faire comme Composer : remplacer les dossiers, genre : mv ecrire old/ecrire && mv new/ecrire ecrire" mais ya le risque que ça plante « dans le mv (et comme le spip-loader charge SPIP pour savoir si tu es loggué)...
  c’est un peu la m. »
  b² : « en même temps ça peut planter à d’autres moments »