Merge and compress a collection of video files. This works particularly well for video recordings that have been split across multiple files due to file size limitations.

mergevideos.sh

#!/bin/bash

## Make list of video files

TMPFILE=$(mktemp -p .) || exit 1

for file in *.{mp4,MP4}
do
	echo file \'$file\' >> $TMPFILE
done

## Concatenate files

ffmpeg -f concat -safe 0 -i $TMPFILE -c copy video-merged.mp4