Convert and compress Flip video on Linux with ffmpeg

A quick note to make sure I won’t forget how I did it:
ffmpeg -i hedde-soul_singing.mp4 -acodec mp2 hedde-soul_singing-compressed.mp4

Reduced my 15 second Flip UltraHD movie in mp4 format from 13.8 MB to 2 MB.

The results:

FFMPEG compressed (2 MB)

Original (13.8 MB)