the video already has a summary in description , so I will just paste it here
Developed to counter advanced torpedoes, CONTRALTO®-V is based on the confusion/dilution concept. Designed to be integrated within any surface ship, for brand new platforms or during modernisation programs, it includes the reaction system, launching devices and CANTO®-V effectors.
CANTO®-V is immediately effective when deployed reducing the reaction time when the threat is detected at very short distance. The cloud of dozen constantly renewed false acoustic targets created by CANTO®-V effectors disturbs the torpedo in few seconds. The torpedo wastes its energy attacking false targets. Meanwhile, the evasive manoeuvre allows the vessel to leave the area totally safe.
Different Navies use different systems to counter torpedoes, most common counter in USN for example is AN/SLQ-25
rather than being launched it's towed by a vessel in high-threat areas
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