We had some spare meat left over from a chamber experiment so we put it out on a game trail and set up our camera. It took less than one hour for a hyena to find the meat.
To give you perspective on how large a hippo is compared to a hyena, here is a video of a hippo walking by the same area the hyena was just standing.
I love these types of videos because of the sounds you hear. You can really hear the hippo munching on grass and all the sounds of the night in the Mara.