C ++ RTP Multicast .ts file with SDP error

Question

I am using a VLC player as the receiver for this RTP stream; in the section "Open Network Stream" I have

RTP: //@239.255.255.254: 49150

I created an udp client with the host IP as localhost with host port 49149. I have a .ts file that I read. At first I tried to split the file into a payload of size 1200 and tried to send it to VLC but I get this error:

SDP required: An SDP description is required to receive an RTP stream. Note that rtp: // URIs cannot work with the dynamic RTP payload format (77).

I'm not sure what the error means, and appreciate any help I can get.