old_contents: """
  Configuration of MoviePy
  
  
  This file enables you to specify a configuration for MoviePy. In
  particular you can enter the path to the FFMPEG and ImageMagick
  binaries.
  
  Defaults must be done BEFORE installing MoviePy: first make the changes,
  then install MoviePy with
  
      [sudo] python setup.py install
  
  Note that you can also change the path by setting environment variables.
  e.g.
  
  Linux/Mac:
     export FFMPEG_BINARY=path/to/ffmpeg
  
  Windows:
     set FFMPEG_BINARY=path\to\ffmpeg
  
  Instructions
  --------------
  
  FFMPEG_BINARY
      Normally you can leave this one to its default ('ffmpeg-imageio') at which
      case image-io will download the right ffmpeg binary (at first use) and then
      always use that binary.
      The second option is 'auto-detect', in this case ffmpeg will be whatever
      binary is found on the computer generally 'ffmpeg' (on linux) or 'ffmpeg.exe'
      (on windows).
      Third option: If you want to use a binary at a special location on you disk,
      enter it like that:
  
      FFMPEG_BINARY = r"path/to/ffmpeg" # on linux
      FFMPEG_BINARY = r"path\to\ffmpeg.exe" # on windows
  
      Warning: the 'r' before the path is important, especially on Windows.
  
  
  IMAGEMAGICK_BINARY
      For linux users, 'convert' should be fine.
      For Windows users, you must specify the path to the ImageMagick
      'convert' binary. For instance:
  
      IMAGEMAGICK_BINARY = r"C:\Program Files\ImageMagick-6.8.8-Q16\convert.exe"
  
  """
  
  import os
  
  FFMPEG_BINARY = os.getenv('FFMPEG_BINARY', 'ffmpeg-imageio')
  IMAGEMAGICK_BINARY = os.getenv('FFMPEG_BINARY', 'auto-detect')
new_contents: """
  Configuration of MoviePy
  
  
  This file enables you to specify a configuration for MoviePy. In
  particular you can enter the path to the FFMPEG and ImageMagick
  binaries.
  
  Defaults must be done BEFORE installing MoviePy: first make the changes,
  then install MoviePy with
  
      [sudo] python setup.py install
  
  Note that you can also change the path by setting environment variables.
  e.g.
  
  Linux/Mac:
     export FFMPEG_BINARY=path/to/ffmpeg
  
  Windows:
     set FFMPEG_BINARY=path\to\ffmpeg
  
  Instructions
  --------------
  
  FFMPEG_BINARY
      Normally you can leave this one to its default ('ffmpeg-imageio') at which
      case image-io will download the right ffmpeg binary (at first use) and then
      always use that binary.
      The second option is 'auto-detect', in this case ffmpeg will be whatever
      binary is found on the computer generally 'ffmpeg' (on linux) or 'ffmpeg.exe'
      (on windows).
      Third option: If you want to use a binary at a special location on you disk,
      enter it like that:
  
      FFMPEG_BINARY = r"path/to/ffmpeg" # on linux
      FFMPEG_BINARY = r"path\to\ffmpeg.exe" # on windows
  
      Warning: the 'r' before the path is important, especially on Windows.
  
  
  IMAGEMAGICK_BINARY
      For linux users, 'convert' should be fine.
      For Windows users, you must specify the path to the ImageMagick
      'convert' binary. For instance:
  
      IMAGEMAGICK_BINARY = r"C:\Program Files\ImageMagick-6.8.8-Q16\convert.exe"
  
  """
  
  import os
  
  FFMPEG_BINARY = os.getenv('FFMPEG_BINARY', 'ffmpeg-imageio')
  IMAGEMAGICK_BINARY = os.getenv('IMAGEMAGICK_BINARY', 'auto-detect')
subject: Fix IMAGEMAGICK_BINARY env