Go to this site and follow the instruction to clone GPAC into your folder on Linux     https://github.com/gpac/gpac/wiki/GPAC-Build-Guide-for-Linux 2. Make sure you install the ffmpeg including its dependencies      1. Install zlib a dependency for ffmpeg           sudo apt install zlib       2. Install zlib-dev as well to be sure nothing will prevent the installer to work           sudo apt install zlib1g           sudo apt install zlib1g-dev       3. Install ffmpeg          sudo apt install ffmpeg          - Keep in mind that there will be other dependencies required along the way 3. Clone, Compile, Build and Install GPAC (This is very important as #MP4Box comes with GPC)     Remember that GPC is a C-based application, you need to have GCC C Compiler installed on your Linux Machine.     Sometimes LInux comes with C Compiler installed, I did not have to install it.      1. Follow instructions here          https://github.com/gpac/gpac/wiki/GPAC-Build-Guide-for-Linux 4. After you have verified that GPAC is installed      - CD into gpac_public folder where you have cloned the GPAC Repository and run the following command.      [command]: sudo cp bin/gcc/libgpac_static.a /usr/lib     - This will allow you to find MP4Box everywhere, you don't have to be in the bin directory of a gcc in order to use the MP4Box. 5. If you see an error that says "Command 'MP4Box' not found, but can be installed with  sudo apt install gpac      - Then simply install gpac since it is already compiled on your machine. After installing it, try to run MP4Box again and you should be able to see the command arguments displayed ont teminal. -- Good Luck and leave us a comment below if this was helpful.