Concat video file by directory

ffmpeg-concat.sh

#!/usr/bin/env sh

# Usage: ffmpeg-concat your-output-prefix output-directory
#
# Note: make sure that output directory is exists and writeable
#
# TODO: add output directory option
# TODO: add filename prefix
prefix=$1
output_directory=$2

# Get avalaible directory
for dir in $(ls -D);
  do for file in $(ls $dir);
    # Generate temporary file list
    do echo "file '$dir/$file'" >> list.txt;
  done;
  ffmpeg -f concat -safe 0 -i list.txt -c copy -y "$output_directory/${prefix}_${PWD##*/}_$dir.mp4";
  # Remove temporary file list
  rm list.txt;
done