Multicast streams over RTSP/RTP

Hi, I’m very new to ‘Evo Stream’ and to streaming in general. I’m trying to figure out how to setup a local stream to fetch a RTP multicast stream through RTSP. To give a bit more context, I need to get the stream from a Samsung camera which must broadcast the stream using multicast and which only provide it (AFAIK) using RTSP. Secondly, I’d like to push this stream using multicast, and I’m wondering if there’s a possiblity to get it using RTSP ? The goal would to be able to use the lazy pull in order to create streams on demand. Can somebody help ? Thanks a lot, Pascal