A Zed & Two Noughts movie plot

After a car accident killed the wives of two zoologist brothers, they became obsessed with the woman who lost a leg in a car accident while using cameras to record the decay of various animal carcasses. In the still images of the film, the corpses of crocodiles, dogs, swans, and zebras turned black, shriveled, spewed rotting water, and crawled out of maggots. Ultimately, the woman's remaining leg also "died" and was amputated, and she died after giving birth to twins that belonged to two brothers. The two brothers injected poison in front of the camera, using their corpses as the last object of research and display.