I think they were all Mi-2, but difficult to tell. Does anybody have any idea where this was filmed? that might give a clue.
Mi-2 had / has a very weak tail rotor attachment fixture- The Poles told they tried to get the Russians to let them (the Poles) re-design it as it was causing problems. In typical Socialist fashion, they were told - if you re-design it, that means that the original designers didn't know what they were doing, and we can't accept that. Leave it as it is....
That's why the Kania (the Allison engined version of the Mi-2) is so different - the Poles did re-design it. Sadly, they seem to lack any management or sales capability, and have faded out of the market.