The recording, it seems, was traditionally done from a drone. It shows how a bomb hits a stationary train, after which the tail section is engulfed in thick smoke. Near the train there are soldiers, who disperse after the impact.
The Russian Spring military correspondent channel notes that the attack was probably carried out by Russian aviation using bombs with universal planning and correction modules (UMPC).
It is not specified in which particular area of Ukraine or when the video was filmed.