RT has been playing that clip along with this image, apparently showing the heavy weapons Putin said have been placed in civilian areas.
"French sea police seized a ship on Saturday that authorities suspect belongs to a Russian company targeted by European Union sanctions over the war in Ukraine, a government official told Reuters. The cargo vessel transporting cars, which was headed for St. Petersburg, is “strongly suspected of being linked to Russian interests targeted by the sanctions,” said Captain Veronique Magnin of the French Maritime Prefecture. The ship was diverted to the port of Boulogne-sur-Mer in northern France between 3 a.m. and 4 a.m., Magnin said, adding ongoing checks were being carried out by customs officials and the ship’s crew was “being cooperative.” French newspaper La Voix Du Nord, which first reported the news, said the vessel was the “Baltic Leader,” which, according to website marinetraffic.com, sails under a Russian flag. Russia’s TASS news agency quoted the Russian embassy as saying all 19 people on board had been allowed to come ashore."
https://www.thehindu.com/news/international/france-seizes-russia-bound-ship-suspected-of-violating-eu-sanctions/article65088041.ece