A bash script that uses FFmpeg to crop a video.

videocrop.sh

#!/bin/bash

# Function that will print requirements if the user passes in the -help flag as the first argument.
function help
{
    echo "Parameters are: "
    echo "  <filename>: The full filename of the video that you want to crop."
}

# Check for '-help' flag.
if [ "$1" == "-help" ];
then
  help 
  exit 0
fi

# Check that the user actually passed in a filename.
if [ $# -eq 0 ]
then
  echo "Error: You must supply the filename of the video that you want to crop."
  exit 1
fi

# Make the directory that will store cropped videos (if it exists).
mkdir -p ./cropped/

# Store the filename that the user passed in.
# This is the file that will be cropped.
file_name=$1 

ffmpeg -i ${file_name} -vf crop=iw/3:ih:2*iw/3:iw -c:a copy ./cropped/cropped-${file_name} && echo "===Succeeded===" || echo "===Failed==="