Short shell script for concatenating video files with ffmpeg's "concat" demuxer, using command line arguments.

ffmpegconcat.sh

#!/bin/bash
# Usage:
#     ./ffmpegconcat.sh input1.mp4 input2.mp4 input3.mp4 output.mp4
# See: https://trac.ffmpeg.org/wiki/Concatenate
for input in "${@:1:$#-1}"; do echo "file '$input'"; done > filelist.txt
ffmpeg -f concat -safe 0 -i filelist.txt -c copy "${@: -1}"
echo "Concatenated:" && cat filelist.txt && rm -f filelist.txt