Concatenating the MP4/MPEG Video isn’t the same as merging pure data files – as MP4/MPEG video files contain header information.

We can do this via FFMPEG, see this for instance:

1

ffmpeg -f concat -safe 0 -i 'videos.lst' -c copy 'output.mp4'

ffmpeg -f concat -safe 0 -i 'videos.lst' -c copy 'output.mp4'

For the videos.lst it lists each video file segment line by line:

file 1.mp4
file 2.mp4
file 3.mp4
...