youtube-dl DASH video and audio in highest quality without human intervention

Question

With youtube-dl I first look what video quality is available and then in second step I download highest possible quality (in this example -f 137+140). Youtube-d

Answer 1

Or you could just use,

youtube-dl https://www.youtube.com/watch?v=blabla

This will download the highest quality video and audio and merge them automatically. And I think I have heard somewhere that you need ffmpeg installed to have this automatic behavior. But I bet most systems have it already.