When the jailers throw the body into the sea from the Chateau D'If, rocks are seen below, but when the body splashes into the water, there are no rocks, only the fortified walls of the Chateau are seen at water level.
After Caderousse punches his nemesis, the guy drops his cane down the stairs, yet when the camera shows him laying on the ground, he is still holding it.
Edmond Dantes (the Count of Monte Cristo) is with two smugglers when he finds the treasure. Yet the two smugglers never think about killing Edmond and taking the treasure for themselves.