The title is "The Human Caiman", a caiman is a little crocodile
The video seems to suggest that a man sees a woman on the beach and he trys to impress her with a flower which she rejects and brushes away. The flower flies into the water and the man drinks from a bottle falling into the water. He turns into a caiman and swims towards the woman and eats her. He then throws her up and she is completely naked. He gives her the flower and she happily accepts but it turns out that she is actually a donkey and the flower was a spirit.
The video description says that it is based off a Magdalena River myth and in the comment section there is someone mad about this video saying it shows disrespect to the local traditions