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• How do I pass a variable to shell script ?

  18 mars 2017, par Björn

  I´m trying to create a textfile that my ffmpeg-command can use to merge two videofiles. The problem I´m having is getting my folder/file-paths to look like I want. The two lines that cause my problems are :

  set theFile to path to replay_folder & "ls.txt"

  I simply want this path to be the path of replay_folder and ls.txt

  In the shell script line I want the same thing.

  do shell script "cd " & replay_folder & "
   /usr/local/bin/ffmpeg -f concat -i ls.txt -c copy merged.mov"

  I get this path with the shell script Macintosh HD:Users:BjornFroberg:Documents:wirecast:Replay-2017-03-17-12_11-1489749062:

  But I want this /Users/BjornFroberg/Documents/wirecast/Replay-2017-03-17-12_11-1489749062/

  The full code is :

  tell application "Finder"
  
  set sorted_list to sort folders of folder ("Macintosh HD:Users:bjornfroberg:documents:wirecast:") by creation date
  
  set replay_folder to item -1 of sorted_list
  
  set replay_files to sort items of replay_folder by creation date
  
  end tell
  
  
  
  set nr4 to "file '" & name of item -4 of replay_files & "'"
  
  set nr3 to "file '" & name of item -3 of replay_files & "'"
  
  
  
  set theText to nr4 & return & nr3
  
  
  
  set overwriteExistingContent to true
  
  
  
  set theFile to path to replay_folder & "ls.txt" --actual path is: POSIX file "/Users/BjornFroberg/Documents/wirecast/Replay-2017-03-17-12_11-1489749062/ls.txt"
  
  
  
  set theOpenedFile to open for access file theFile with write permission
  
  
  
  if overwriteExistingContent is true then set eof of theOpenedFile to 0
  
  
  
  write theText to theOpenedFile starting at eof
  
  
  
  close access theOpenedFile
  
  
  
  do shell script "cd " & replay_folder & "
  
  /usr/local/bin/ffmpeg -f concat -i ls.txt -c copy merged.mov"

  Any help is appreciated :)

• Unrecognized option 'c copy'

  18 mars 2017, par Eser Comak

  I have been working on a script as a part of both learning process and creating handy tools. I am trying to loop over a list of video files to extract a certain part of each video on the list. By looking at example scripts and ffmpeg documentation I finally came up with this :

  import os
  
  import sys
  
  import subprocess as sp
  
  
  
  from moviepy.tools import subprocess_call
  
  
  
  def ffmpeg_extract_pandomim_subclip():
  
  
  
      with open('videolist.txt') as f:
  
          lines = f.readlines()
  
      lines = [x.strip() for x in lines]
  
  
  
      for video in lines:
  
          name, ext = os.path.splitext(video)
  
          targetname = "%s-pandomim%s" % (name, ext)
  
          t1 = "00:10:00"
  
          t2 = "00:15:00"
  
          cmd = ["ffmpeg",
  
                 "-i", "%s%s" % (name, ext),
  
                 "-ss", t1,
  
                 "-to", t2, "-c copy", targetname]
  
  
  
          subprocess_call(cmd)
  
  
  
  ffmpeg_extract_pandomim_subclip()

  I know this is not the ideal way to do it : I created a videolist.txt and listed all the video file names in that txt file, line by line,(T1-1.mp4, T1-2.mp4,... ) that share the same folder with the python script "new 1.py" and the actual videos which are T1-1.mp4, T1-2.mp4,...

  The error I am getting really confuses me because when I use -c copy from cmd it works just fine.

  The full error is :

  C:\Users\çomak\AppData\Local\Programs\Python\Python35-32\python.exe "C:/ffmpeg/bin/new 1.py"
  
  
  
  [MoviePy] Running:
  
  >>> ffmpeg -i T1-1.mp4 -ss 00:10:00 -to 00:15:00 -c copy T1-1-pandomim.mp4
  
  [MoviePy] This command returned an error !Traceback (most recent call last):
  
    File "C:/ffmpeg/bin/new 1.py", line 28, in <module>
  
      ffmpeg_extract_pandomim_subclip()
  
    File "C:/ffmpeg/bin/new 1.py", line 25, in ffmpeg_extract_pandomim_subclip
  
      subprocess_call(cmd)
  
    File "C:\Users\çomak\AppData\Local\Programs\Python\Python35-32\lib\site-packages\moviepy\tools.py", line 48, in subprocess_call
  
      raise IOError(err.decode('utf8'))
  
  OSError: ffmpeg version N-83975-g6c4665d Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 6.3.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
  
    libavutil      55. 48.100 / 55. 48.100
  
    libavcodec     57. 83.100 / 57. 83.100
  
    libavformat    57. 66.104 / 57. 66.104
  
    libavdevice    57.  3.100 / 57.  3.100
  
    libavfilter     6. 76.100 /  6. 76.100
  
    libswscale      4.  3.101 /  4.  3.101
  
    libswresample   2.  4.100 /  2.  4.100
  
    libpostproc    54.  2.100 / 54.  2.100
  
  Unrecognized option 'c copy'.
  
  Error splitting the argument list: Option not found
  
  
  
  
  
  Process finished with exit code 1
  
  </module>

  I am using Pycharm and if I remove the -c copy part it works, but the process is slow... With -c copy, it is much faster.

  I appreciate your time and effort to help me out !

• How to keep personally identifiable information safe

  23 janvier 2020, par Joselyn Khor
  The protection of personally identifiable information (PII) is important both for individuals, whose privacy may be compromised, and for businesses that may have their reputation ruined or be liable if PII is wrongly accessed, used, or shared.

  Curious about what PII is ? Here’s your introduction to personally identifiable information.

  Due to hacking, data leaks or data thievery, PII acquired can be combined with other pieces of information to form a more complete picture of you. On an individual level, this puts you at risk of identity theft, credit card theft or other harm caused by the fraudulent use of your personal information.

  On a business level, for companies who breach data privacy laws – like Cambridge Analytica’s harvesting of millions of FB profiles – the action leads to an erosion of trust. It can also impact your financial position as heavy fines can be imposed for the illegal use and processing of personally identifiable information.

  So what can you do to ensure PII compliance ?

  On an individual level :

  1. Don’t give your data away so easily. Although long, it’s worthwhile to read through privacy policies to make sure you know what you’re getting yourself into.
  2. Don’t just click ‘agree’ when faced with consent screens, as consent screens are majorly flawed. Users mostly always opt in without reading and without being properly informed what they opt in to.
  3. Did you know you’re most likely being tracked from website to website ? For example, Google can identify you across visits and websites. One of the things you can do is to disable third party cookies by default. Businesses can also use privacy friendly analytics which halt such tracking. 
  4. Use strong passwords.
  5. Be wary of public wifi – hackers can easily access your PII or sensitive data. Use a VPN (virtual private network), which lets you create a secure connection to a server of your choosing. This allows you to browse the internet in a safe manner.

  A PII compliance checklist for businesses/organisations :

  1. Identify where all PII exists and is stored – review and make sure this is in a safe environment.
  2. Identify laws that apply to you (GDPR, California privacy law, HIPAA) and follow your legal obligations.
  3. Create operational safeguards – policies and procedures for handling PII at an organisation level ; and building awareness to focus on the protection of PII.
  4. Encrypt databases and repositories where such info is kept.
  5. Create privacy-specific safeguards in the way your organisation collects, maintains, uses, and disseminates data so you protect the confidentiality of the data.
  6. Minimise the use, collection, and retention of PII – only collect and keep PII if it’s necessary for you to perform your legal business function.
  7. Conduct privacy impact assessments (PIA) to find and prevent privacy risks (identify what and why it’s to be collected ; how the information will be secured etc.).
  8. De-identify within the scope of your data collection and analytics tools.
  9. Anonymise data.
  10. Keep your privacy policy updated.
  11. Pseudonymisation.
  12. A more comprehensive guide for businesses can be found here : https://iapp.org/media/pdf/knowledge_center/NIST_Protecting_PII.pdf

  Unsure of what information could be considered PII ? Check out this list of examples.

  Additional resources :

  • https://www.umassmed.edu/it/security/compliance/what-is-pii/
  • http://www.osec.doc.gov/opog/privacy/PII_BII.html