Unfortunately, none of this is correct. Just look up 201a StGB. Basically, it is only forbidden to publish pictures, or to photograph protected areas, or to damage someone's reputation this way. If he made the recordings during your act, he documented an administrative offense that can be used against you as evidence... All in all, actually not worth mentioning. A bad basis for a neighborhood. For all those who are now wrinkling their noses: According to the false prevailing opinion, no one would be allowed to take any vacation photos showing other people anymore. But as a little anecdote, as soon as they are shown at events with more than 5-10 participants (wedding, 60th birthday, etc.), they count as published.