Payload type 26 is MJPEG and wireshark parses these packets like a charm. Payload type more than 96 are dynamic types, there is no reason to stream MJPEG with type 96. What is the source of media? Did you check the type of stream there?
Probably type 96 means h263 or h264 video stream, many cameras do like this. As far as I know, Wireshark cannot decode h264 header/payload.