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• ffmpeg in python script

  24 février 2017, par jawwe

  I would like to run the following command in a python script, I also want to make it loop over several videos in a folder. This is the command I want to run.

  ffmpeg -i mymovie.avi -f image2 -vf fps=fps=1 output%d.png

  I want to fit it in something like this :

  import ffmpy
  
  import os
  
  
  
  path = './Videos/MyVideos/'
  
  for filename in os.listdir(path):
  
      name = filename.replace('.avi','')
  
      os.mkdir(os.path.join(path,name))
  
      *ffmpeg command here*

  I found a wrapper for ffmpeg called ffmpy, could this be a solution ?

• How can I get Python to find ffprobe ?

  4 novembre 2018, par tburrows13

  I have ffmpeg and ffprobe installed on my mac (macOS Sierra), and I have added their path to PATH. I can run them from terminal.

  I am trying to use ffprobe to get the width and height of a video file using the following code :

  import subprocess
  
  import shlex
  
  import json
  
  
  
  
  
  # function to find the resolution of the input video file
  
  def findVideoResolution(pathToInputVideo):
  
      cmd = "ffprobe -v quiet -print_format json -show_streams"
  
      args = shlex.split(cmd)
  
      args.append(pathToInputVideo)
  
      # run the ffprobe process, decode stdout into utf-8 & convert to JSON
  
      ffprobeOutput = subprocess.check_output(args).decode('utf-8')
  
      ffprobeOutput = json.loads(ffprobeOutput)
  
  
  
      # find height and width
  
      height = ffprobeOutput['streams'][0]['height']
  
      width = ffprobeOutput['streams'][0]['width']
  
  
  
      return height, width
  
  
  
  h, w = findVideoResolution("/Users/tomburrows/Documents/qfpics/user1/order1/movie.mov")
  
  print(h, w)

  I am sorry I cannot provide a MCVE, as I didn’t write this code, and I don’t really know how it works.

  It gives the following error :

  Traceback (most recent call last):
  
    File "/Users/tomburrows/Dropbox/Moviepy Tests/get_dimensions.py", line 21, in <module>
  
      h, w = findVideoResolution("/Users/tomburrows/Documents/qfpics/user1/order1/movie.mov")
  
    File "/Users/tomburrows/Dropbox/Moviepy Tests/get_dimensions.py", line 12, in findVideoResolution
  
      ffprobeOutput = subprocess.check_output(args).decode('utf-8')
  
    File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/subprocess.py", line 626, in check_output
  
      **kwargs).stdout
  
    File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/subprocess.py", line 693, in run
  
      with Popen(*popenargs, **kwargs) as process:
  
    File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/subprocess.py", line 947, in __init__
  
      restore_signals, start_new_session)
  
    File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/subprocess.py", line 1551, in _execute_child
  
      raise child_exception_type(errno_num, err_msg)
  
  FileNotFoundError: [Errno 2] No such file or directory: 'ffprobe'
  
  </module>

  If python is not reading from the PATH file, how can I specify where ffprobe is ?

  Edit :
  It appears the python path is not aligned with my shell path.
  Using os.environ["PATH"]+=":/the_path/of/ffprobe/dir" at the beginning of each program allows me to use ffprobe, but why might my python path not be the same as my shell path ?

• Converting mp4 AAC to AVC using Python

  12 janvier 2020, par zion.b.

  i am using ffmpeg to convert video format. I have a video in mp4 aac and want to convert it to mp4 avc. I successfully(!!!) used ffmpeg to covert image to avi/mkv/even copy of the mp4 but nothing gives me what i desire.

  The idea is to have a video file format that will run on mostly all mobile devices such as mp4 avc.
  

  My python code :
  

  import subprocess #need to install ffmpegin terminal/cmd
  
  
  
  def convert_video(video_input, video_output):
  
      cmds = ['ffmpeg', '-i', video_input, video_output]
  
      subprocess.Popen(cmds)
  
  
  
  
  
  convert_video("videoName.mp4", "videoNameCopy.mp4")