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• 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 ?

• Android ffmpeg needs android.permission.ACCESS_COARSE_LOCATION for compression

  20 septembre 2018, par htafoya

  I’m using FFmpegAndroid library (based on C) on a project in order to compress encode some videos.

  The library requires the use of android.permission.ACCESS_COARSE_LOCATION permission.

  If I remove it the compression fails, but I get no additional detail on where the lib requires the permission.

  The shell command is :

  [/data/user/0/app_package/files/ffmpeg, -y, -i, /storage/emulated/0/WhatsApp/Media/WhatsApp Video/VIdidi.mp4, -async, 1, -c:v, libx264, -profile:v, high, -preset, ultrafast, -b:v, 1400k, -maxrate, 1400k, -r, 30, -vf, scale=-1:960, /storage/emulated/0/appname/out.mp4]

  Do anyone knows on what this is used ? As I don’t want my users to be asked for a permission without clear understanding on the usage.

• I'm trying to use FFmpeg with command prompt in my python program, but it doesnt execute [on hold]

  26 mai 2018, par MilkToast

  I’ve tried to do it a bunch of different ways but each time it execute. The line works fine in the command prompt, but I cant get it to work from python.

  check_output(r"ffmpeg -i C:\Users\jared\Desktop\Rev\videosnshit\howto.mp4 -vn -ar 44100 -ac 1 -b:a 32k -f wav audio.wav", shell=True)

  // This is the bit that works fine in command prompt :

  ffmpeg -i C:\Users\jared\Desktop\Rev\videosnshit\howto.mp4 -vn -ar 44100 -ac 1 -b:a 32k -f wav audio.wav

  I’m probably being dumb, so any help would be great ! thanks !