Prerequisites

This software is a Python script which requires basic CLI commands knowledge. This includes navigation in the file system and invocation of a script.

You need to have Python v2.7+ installed on your system.

Dependencies

• ffmpeg - Windows/Linux/MacOS - needed for the video compression
• Chocolatey - Windows - package manager needed for installing ffmpeg
• Homebrew - MacOS - package manager needed for installing ffmpeg

All dependencies will be installed automatically by the script. However if user agreement is needed you will have to do that yourself.

Usage

1. Open a shell terminal (PowerShell terminal on Windows)
2. Navigate to the directory where the script is contained
3. Call the script with (<target_directory_path> being the relative or absolute path of the directory containing the video files that you want to compress)

python project_script.py <target_directory_path>

NOTE: If the script has no arguments it will compress every video file in the directory it is in, as well as its subdirectories.

Known issues

Windows

None yet.

MacOS

None yet.

Linux

If you get the following error:

E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable) 
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?

It is best if you run linux in recovery mode and choose clean and check dpkg there.

WARNING: The steps below cannot guarantee a healthy state of your system afterwards. But, in the end you can still fix the system in recovery mode as i've mentioned.

1. Open up a terminal
2. Execute ps aux | grep -i apt to check the running processes contanining "apt" (the update process is one of these)
3. If you see a process with name ending with "daily update", BINGO
4. In the second column of that process's row you will see the process ID (e.g. 1321)
5. Execute sudo kill <process-id> (e.g. sudo kill 1321)

If the problems still persists:

1. Run these commands one by one:

sudo lsof /var/lib/dpkg/lock
sudo lsof /var/lib/apt/lists/lock
sudo lsof /var/cache/apt/archives/lock

2. Kill every process you encounter in there with sudo kill -9 <process-id> (do not forget the "-9" parameter)
3. Run these commands

sudo rm /var/lib/apt/lists/lock
sudo rm /var/cache/apt/archives/lock
sudo rm /var/lib/dpkg/lock

4. Reconfigure the packages with sudo dpkg --configure -a
5. Run sudo apt full-upgrade