Unfinished business does not let me sleep.
I did the first video again, I had the full material from two cams - the other shot at normal speed, I then accelerated it to 2x. Its a longer film now, but much more pleasant to the eye -actually you can now catch quite some sights from the city. Subtitles are available. Not too much comment, though. I also paid more attention to sound.
Those who have watched the first version, I invite you to try again this one. The first pack was fine because it nicely matched the music's length, but in this one there is much more to see. 5 times as much.
The question now is: do I need a third camera?
[deleted April 18th 2020]
The whole way how this thing goes shows me what I should have known: you never stop learning and experimenting (did I really say two days ago that I would...?!) , and you never stop gathering experience. Baby steps.