Point in the sky over Vilnius: drone or something else?

A 30-second clip shows a small, distant point in the sky over Vilnius. It appears almost stationary, then seems to drift slowly downward. The object cannot be identified from the frame, so the footage does not establish whether it is a drone or something else.

The person who posted the clip says it was filmed on September 20, 2024, and that no sound could be heard from the object. The post title asks whether it is a drone, but the clip offers no confirmed identification.