Success
Can RTMP to WebRTC On iOS 11 up can play.
https://obsproject.com/forum/threads/to-set-up-a-private-stream-server-with-ums.5401/
1、obs： customer steam rtmp://xxx.xxx.xxx.xxx:5130/live/name
5130 is Unreal media server live port
2、Unreal media server： New Live Broadcast -> Rebroadcast live RTMP / RTSP / MEGG-TS / MMS Stream ->
Live broadcast Alias : name
chosese PUSH rtmp:// no auth for test
then
use unreal streamplayer or vlc
vlc
rtmp://xxx.xxx.xxx.xxx:5119/live/name
5119 is Unreal media server players port
