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• Having issues making an app with py2app ffmpeg and ffprobe

  23 septembre 2024, par Nuno Mesquita

  I have made an app in OSX Python, that uses FFMEG and ffprobe.

  


  It runs fine in my VS Code.

  


  I want to make a self sustained app, that others can use, without needed to install anything themselves. So, I manually included the static libraries in the bin folder of my main app, and am able to run the app using the libraries inside my bin folder.

  


  I have lost many hours trying to figure this out, and am always getting the same error.

  


  My best shot was being able to open the app inside app/contents/resources and running via Python, but still have the issue saying that ffprobe is not available.

  


  I´m losing my mind...

  


  Should I try a completely different approach ?

  


  For now, I just want my OSX friends to be able to use the app, then I will want it to run on Windows too, but baby steps.

  


  I am not quite sure what to include in setup.py, so I would love to include everything that is in my app folder, to avoid all sorts of errors in missing .pngs and stuff.

  


  I also made sure that libraries are executable (they are about 80MB each (ffmpeg and ffprobe))

  


  Can anyone help =D ???

  


  I described above, tested different ways, checked stuff like redirecting the libraries to the folders of the app :

  


  For the last try my setup.py was :

  


  from setuptools import setup

APP = ['mpc.py']
DATA_FILES = [
    ('bin', ['./bin/ffmpeg', './bin/ffprobe']),
    ('theme/dark', ['./theme/dark/*.png']),
    ('theme/light', ['./theme/light/*.png']),
    ('theme', ['./theme/dark.tcl', './theme/light.tcl']),
    '.',  # Add current directory to ensure everything is included
]

OPTIONS = {
    'argv_emulation': False,
    'packages': ['pydub', 'pygame', 'requests', 'freesound'],
    'includes': ['pydub', 'pygame', 'requests', 'freesound'],
    'resources': ['./bin/ffmpeg', './bin/ffprobe', './theme/dark/*.png', './theme/light/*.png',     './theme/dark.tcl', './theme/light.tcl'],
}

setup(
    app=APP,
    data_files=DATA_FILES,
    options={'py2app': OPTIONS},
    setup_requires=['py2app'],
)


  


  And I also had this in the beginning of my Python script :

  


  # Set ffmpeg and ffprobe paths relative to the app's Resources/bin directory
app_dir = os.path.dirname(os.path.abspath(__file__)) 

# Set ffmpeg and ffprobe paths relative to the app's Resources/bin directory
ffmpeg_path = os.path.join(app_dir, 'bin', 'ffmpeg')
ffprobe_path = os.path.join(app_dir, 'bin', 'ffprobe') 
AudioSegment.converter = ffmpeg_path
AudioSegment.ffprobe = ffprobe_path


  


  Don't know what else to try.

  


• sometimes failed to read frame from rtsp with opencv

  7 novembre 2018, par jon

  I got a strange issue.
  my code is quite simple, just read frame from RTSP and do some processing.

  for (;;)
  
  {
  
      cap >> frame;
  
      if (frame.empty()) {
  
          break;
  
      }
  
      // heavy_processing(frame) // 
  
      imshow("cam",frame);
  
  }

  the rtsp streaming is a webcam with 1920x1080P, network traffic is arround 4Mb/s

  without "heavy_processing()" function, basically it runs good. CPU is 45% (i7-7700)

  with "heavy_processing()" function, it will read an empty frame after couple seconds then exit. I can see CPU surge to 95%+ before it exit.

  I built opencv(3.4.3) myself with mostly default option.

  so far I suspect the videocap device shutdown when there are too much frames in the buffer, but it doesn’t make sense.shouldn’t it drop the earliest frame ? or is it possible the frame is corrupted inside ’heavy_processing()’ ?

  ffmpeg probably is 2.8.15, ubuntu 16.04

  ldd result :

  linux-vdso.so.1 =>  (0x00007ffeb5f9b000)
  
  libopencv_dnn.so.3.4 => /usr/local/lib/libopencv_dnn.so.3.4 (0x00007fe5fd796000)
  
  libprotobuf.so.9 => /usr/lib/x86_64-linux-gnu/libprotobuf.so.9 (0x00007fe5fd454000)
  
  libcppkafka.so.0.2 => /usr/local/lib/libcppkafka.so.0.2 (0x00007fe5fd18c000)
  
  libopencv_highgui.so.3.4 => /usr/local/lib/libopencv_highgui.so.3.4 (0x00007fe5fcf74000)
  
  libopencv_videoio.so.3.4 => /usr/local/lib/libopencv_videoio.so.3.4 (0x00007fe5fcd27000)
  
  libopencv_imgcodecs.so.3.4 => /usr/local/lib/libopencv_imgcodecs.so.3.4 (0x00007fe5fc664000)
  
  libopencv_imgproc.so.3.4 => /usr/local/lib/libopencv_imgproc.so.3.4 (0x00007fe5f9d50000)
  
  libopencv_core.so.3.4 => /usr/local/lib/libopencv_core.so.3.4 (0x00007fe5f8e49000)
  
  libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fe5f8ac7000)
  
  libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fe5f87bd000)
  
  libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fe5f85a7000)
  
  libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fe5f81dd000)
  
  libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fe5f7fbf000)
  
  /lib64/ld-linux-x86-64.so.2 (0x0000563d8f116000)
  
  libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007fe5f7da5000)
  
  librdkafka.so.1 => /usr/local/lib/librdkafka.so.1 (0x00007fe5f7a9d000)
  
  libgtk-x11-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 (0x00007fe5f7451000)
  
  libgdk-x11-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0 (0x00007fe5f719c000)
  
  libcairo.so.2 => /usr/lib/x86_64-linux-gnu/libcairo.so.2 (0x00007fe5f6e88000)
  
  libgdk_pixbuf-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0 (0x00007fe5f6c65000)
  
  libgobject-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 (0x00007fe5f6a12000)
  
  libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007fe5f6701000)
  
  librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007fe5f64f8000)
  
  libdc1394.so.22 => /usr/lib/x86_64-linux-gnu/libdc1394.so.22 (0x00007fe5f6282000)
  
  libavcodec.so.58 => /usr/local/lib/libavcodec.so.58 (0x00007fe5f4d93000)
  
  libavformat.so.58 => /usr/local/lib/libavformat.so.58 (0x00007fe5f494b000)
  
  libavutil.so.56 => /usr/local/lib/libavutil.so.56 (0x00007fe5f46d7000)
  
  libswscale.so.5 => /usr/local/lib/libswscale.so.5 (0x00007fe5f4458000)
  
  libjpeg.so.8 => /usr/lib/x86_64-linux-gnu/libjpeg.so.8 (0x00007fe5f41fe000)
  
  libpng12.so.0 => /lib/x86_64-linux-gnu/libpng12.so.0 (0x00007fe5f3fd9000)
  
  libtiff.so.5 => /usr/lib/x86_64-linux-gnu/libtiff.so.5 (0x00007fe5f3d65000)
  
  libjasper.so.1 => /usr/lib/x86_64-linux-gnu/libjasper.so.1 (0x00007fe5f3b0f000)

• correct way to download a mp4 [Audio only] file as a mp3 file via php

  3 février 2018, par Kapil

  I am asking this question because i found it impossible as far my knowledge stands. However i believe here on stackoverflow a lot of genius persons visits so maybe someone can give a good advice / trick.

  My problem is, I am downloading a audio/mp4 file of youtube hosted on googlevideo.com’s server.

  My PHP code for this purpose :
  $mp3path is url of video

  header('Content-Description: File Transfer');
  
  if(strpos($mp3path, "https://") === false) {
  
      header('Content-length: ' . size($mp3path)); //size is custom function
  
  } 
  
      header("Content-Type: audio/MP4A-LATM, audio/MP4A, audio/m4a, audio/mp4, audio/mp4a, audio/mp4-audio, audio/mpeg"); 
  
      header('Content-Type: application/force-download');
  
      header("Accept-Ranges: bytes");
  
      header('Content-Transfer-Encoding: binary'); 
  
      header('Content-disposition: attachment; filename="'.$title.'.mp3"'); 
  
      header('Connection: Keep-Alive');
  
      header('Expires: 0');
  
      header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
  
      header('Last-Modified: ' . gmdate('D, d M Y H:i:s', time()) . ' GMT');
  
      header("Cache-Control: private", false);
  
      header('Pragma: no-cache');
  
      readfile($mp3path);
  
      exit;

  I can download this audio file but few mp3 players are not able to play it when i did some research on by using mp3val [mp3val.sourceforge.net]. I found this file do not contain sample-rate, bit-rate or some other required codecs inside the file.
  Error received from mp3val : Unknown file format

  I know one possible way of doing this which is ffmpeg but i am looking for a less time consuming option of doing this because first ffmpeg download the whole file and then convert it to mp3 and save it on server. It takes a lot of time.

  I am looking for a easiest solution in which, i dont want to save the whole file on my server. I want to call this file from remote server and want to add sample rate, bit-rate in the file and then just somehow with php i want to start download on browser.

  All i mean to say i need a faster solution. I have seen 2 yt to mp3 converter, They are doing the same thing, giving instant download. i dont know how ?

  Please if you think its a stupid question or not possible then dont report to stackoverflow. I am trying to figure it out that’s why i am asking this question here. I hope you’ll understand my curiosity.

  Thanks,