I am creating an rtp stream by OBS (rtp_mpegts) muxer in recordig mode. It should use recording not streaming for some reason, however it works.

The created rtp stream (9-10Mbps) to a multicast address is works perfect when I open with VLC player.

But on MAG524 stb only works when it goes through an udp proxy server or I play the recorded ts. But the raw rtp stream is black, sometimes showing a frame of pictures but the audio is playing contiuesly. Tried almost everything adding options to the output but no success. RTP streams that are created by other broadcast devices are perfectly shown.