First video of cluster munitions used against Russian infantry

Looked like an air-burst munition of sorts? I thought that hit was the hit labelled as use of cluster munition and was readying my downvote, but then the next two was shown and yeah... clusters alright.

Judging by all the turned up dirt when the video starts I'd say these guys walked right through where that thing was already zeroed in on. Good. Dead Russians are good Russians.