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• ffmpeg not working if run from py2app

  28 juin 2018, par dprogramz

  I’m trying to build a simple app that concats 2 mp4 files. It works fine if I run it from the command line, but if I run it from py2app app it doesn’t work. If I run the app from within the py2app in the console (eg ’dist/addTag.app/Contents/MacOS/addTag’), it works fine. It only doesn’t work if i run the app by double clicking on it. Any ideas ? code below

  #! /usr/bin/python
  
  import argparse
  
  import ffmpeg
  
  import os
  
  import shutil
  
  import sys
  
  from Tkinter import *
  
  import time
  
  
  
  fields = 'Input Video', 'Tag Video', 'Output Name'
  
  
  
  def fetch(entries, bu, lb, rt):
  
      bu['state'] = 'disabled'
  
      lb['text'] = 'working'
  
      rt.update()
  
      ffmpeg.concat(ffmpeg.input(entries[0][1].get()), ffmpeg.input(entries[1][1].get())).output(os.path.expanduser("~/desktop/")+entries[2][1].get()).run()
  
      bu['state'] = 'normal'
  
      lb['text'] = 'Ready'
  
      rt.update()
  
  
  
  
  
  def makeform(root, fields):
  
     entries = []
  
     for field in fields:
  
        row = Frame(root)
  
        lab = Label(row, width=15, text=field, anchor='w')
  
        ent = Entry(row)
  
        row.pack(side=TOP, fill=X, padx=5, pady=5)
  
        lab.pack(side=LEFT)
  
        ent.pack(side=RIGHT, expand=YES, fill=X)
  
        entries.append((field, ent))
  
     return entries
  
  
  
  if __name__ == '__main__':
  
     root = Tk()
  
     root.title("Video Maker")
  
     ents = makeform(root, fields)
  
     root.bind('<return>', (lambda event, e=ents: fetch(e))) 
  
     label = Label(root, text="Ready")
  
     label.pack(side=LEFT)  
  
     b1 = Button(root, text='Make Video',
  
            command=(lambda e=ents: fetch(e, b1, label, root)))
  
     b1.pack(side=LEFT, padx=5, pady=5)
  
     b2 = Button(root, text='Quit', command=root.quit)
  
     b2.pack(side=LEFT, padx=5, pady=5)
  
  
  
     root.mainloop()
  
  </return>

• Install python's 'albumentations' in Kaggle's R kernel ?

  22 avril 2022, par dfrankow

  I can start an R kernel on Kaggle, run

  


  library(reticulate)
py_install('albumentations')


  


  Works for awhile, then finishes.

  


  However, importing it produces an error :

  


  reticulate::import('albumentations')


  


  


  Error in py_module_import(module, convert = convert) : ImportError : libopenh264.so.5 : cannot open shared object file : No such file or directory

  


  


  This looks like this stackoverflow question.

  


  The problem seems to be in ffmpeg, but I'm not sure what or how to install something to get that library.

  


  Below is ldd output of ffmpeg, showing the library is not found.

  


  conda_update doesn't help.

  


  system2("which",
        args=c('ffmpeg'),
        stdout=T, stderr=T)


  


  


  '/root/.local/share/r-miniconda/envs/r-reticulate/bin/ffmpeg'

  


  


  system2("ldd",
        args=c('/root/.local/share/r-miniconda/envs/r-reticulate/bin/ffmpeg'),
        stdout=T, stderr=T)


  


  


  '\tlinux-vdso.so.1 (0x00007ffcba3f6000)''\tlibavdevice.so.58 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/libavdevice.so.58 (0x00007f324e66f000)''\tlibavfilter.so.7 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/libavfilter.so.7 (0x00007f324e33a000)''\tlibavformat.so.58 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/libavformat.so.58 (0x00007f324e0d2000)''\tlibavcodec.so.58 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/libavcodec.so.58 (0x00007f324cc01000)''\tlibavresample.so.4 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/libavresample.so.4 (0x00007f324cbdf000)''\tlibpostproc.so.55 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/libpostproc.so.55 (0x00007f324cbbd000)''\tlibswresample.so.3 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/libswresample.so.3 (0x00007f324cb9e000)''\tlibswscale.so.5 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/libswscale.so.5 (0x00007f324cb10000)''\tlibavutil.so.56 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/libavutil.so.56 (0x00007f324ca06000)''\tlibm.so.6 => /usr/lib/x86_64-linux-gnu/libm.so.6 (0x00007f324c8b7000)''\tlibpthread.so.0 => /usr/lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f324c894000)''\tlibc.so.6 => /usr/lib/x86_64-linux-gnu/libc.so.6 (0x00007f324c6a0000)''\tlibfreetype.so.6 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/./libfreetype.so.6 (0x00007f324c5eb000)''\tlibbz2.so.1.0 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/./libbz2.so.1.0 (0x00007f324c5d7000)''\tlibgmp.so.10 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/./libgmp.so.10 (0x00007f324c531000)''\tlibz.so.1 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/./libz.so.1 (0x00007f324c517000)''\tlibgnutls.so.30 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/./libgnutls.so.30 (0x00007f324c343000)''\tlibvpx.so.5 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/./libvpx.so.5 (0x00007f324bec2000)''\tlibmp3lame.so.0 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/./libmp3lame.so.0 (0x00007f324be49000)''\tlibopus.so.0 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/./libopus.so.0 (0x00007f324bde8000)''\tlibx264.so.157 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/./libx264.so.157 (0x00007f324bb1b000)''\tlibopenh264.so.5 => not found''\tlibrt.so.1 => /usr/lib/x86_64-linux-gnu/librt.so.1 (0x00007f324baf9000)''\t/lib64/ld-linux-x86-64.so.2 (0x00007f324e6c5000)''\tlibpng16.so.16 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/././libpng16.so.16 (0x00007f324bac0000)''\tlibnettle.so.8 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/././libnettle.so.8 (0x00007f324ba7f000)''\tlibhogweed.so.6 => /root/.local/share/r-miniconda/envs/r-reticulate/bin/../lib/././libhogweed.so.6 (0x00007f324ba29000)''\tlibdl.so.2 => /usr/lib/x86_64-linux-gnu/libdl.so.2 (0x00007f324ba21000)'

  


  


• FFmpeg.AutoGen example of how to split audio file

  7 mars 2018, par Sven

  I want to use the FFmpeg.AutoGen project from here : https://github.com/Ruslan-B/FFmpeg.AutoGen

  I’m not familiar with the ffmpeg API, so I wanted to get an example of how to split an audio file into little files, for example the audio file is about 2 hours long (can be mp3,ogg,wav,etc.) and I want to split it into several little files of x minutes. The splitting should be done on the main audio file with timestamps from and to, for example from = 00:25:00 (meaning 25 minutes), to = 00:31:12 (meaning 31 minutes, 12 seconds) and the output should be the section from the main audio file, the result is 00:06:12 (meaning 6 minutes, 12 seconds) long.

  How can this task be achieved with the project ? Also a C example can help me, I would try to convert it into the framework.

  Thanks for your responses.