Mirror for a Hero (1987) streaming VF HD et 4K - oovap

Sergei and Andrei are walking through a city park and see that a film shoot set just post World War II is taking place . They climb over the park fence to get a better view but hit some cable lying on the ground and find themselves in the past - on May 8, 1949, a day which they seem doomed to relive over and over again..