RTP payload formats explain what types of data can be sent in an RTP (Real-Time Protocol) packet. RTP packets are like little packages that carry data over the internet. These packages can carry different types of data like audio, video, 3D graphics, etc. RTP payload formats tell us which type of data can go in a package and how it is arranged (formatted). This helps computers and devices communicate properly. So, RTP payload formats help the packages get to their destination safely with the right data inside.