🌱 Merge videos with ffmpeg

Source

$ cat file1.mp4 file2.mp4 > file3.mp4

$ ffmpeg -i file3.mp4 -qscale:v 2 output.avi

Make a list of files to concatenate

$ cat inputs.txt
	2	file sample_mpeg4.mp4
	3	file sample_mpeg4.mp4
	4	concatenate

$ ffmpeg -f concat -i inputs.txt -c copy out.mp4