hint! this script works! BUT: it can not deal with complex filenames, it needs “easy filenames” (yes no kidding).

so something like: 2.mp4 and 3.mp4 in the same directory will work.

or it will output:

concat Unsafe file name: Operation not permitted

tested on

cat /etc/os-release; # tested on
PRETTY_NAME="Debian GNU/Linux 11 (bullseye)"

make sure ffmpeg is installed

apt update
apt install ffmpeg
could make a script call it vim /scripts/ffmpeg_concat_videos.sh
for f in *.mp4; do echo "file '$f'" >> ffmpeg_concat_videos.txt; done
ffmpeg -f concat -i ffmpeg_concat_videos.txt -c copy output.concat.mp4
rm -rf ffmpeg_concat_videos.txt; # tidy up

:wq, save, close

mark runnable:

chmod +x /scripts/*.sh



creditz: https://shotstack.io/learn/use-ffmpeg-to-concatenate-video/

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