About 54 minutes into the movie (the whole video, including previews, etc.) Iago had fooled Aladdin and the Sultan to take a trip to a place where Jafar is supposed to attack. When Jafar captures the Sultan he throws Aladdin into the river. As the river is carrying Aladdin he has no way to save himself until he holds on to a rock in the middle of the river. The funny thing is that if you look closely at the scene, Aladdin flows all the way to past the end of the scene then you see him appear behind the rock as if he had hold on to it the whole time. You don't need to pause this to look at it, it's pretty obvious.