The snakes IS an Anaconda, snakes CAN regurgitate and will when they fell threatened as was explained earlier, and it was NOT a hippo. It was a Capybara. Capybara's reach large sizes and although furry, when covered in a snakes digestive fluids everything looks slimy.
Translation of the video....
"This young 6 meter long snake appeared in the Crocodile River in the __________ region of Sao Paulo. It was taken out of the water, on earth/ground she can't move due to her weight and volume in the principal parts of her body. She felt threatened and seeks to defend herself. She wants to flee, but for this to happen she must be freed of the load she carries. ....not sure...something about her only having one thing to do?..."
Then it goes silent as she regurgitates the prey