Multistreaming on adroid can be done very easily with ffmpeg, first install ffmpegui

There you can listen for rtmp and restream to as many links and any format you want; to give you an example you may enter a command like this:
ffmpeg -listen 1 -i rtmp://127.0.0.1:1935/live/mystream -c copy -f flv rtmp://live-lhr04.twitch.tv/app/yourkey -c copy -f rtsp -rtsp_transport tcp rtsp://MyObs/live/stream -c:v libx264 -preset superfast -maxrate 2500k -bufsize 5000k -r 25 -pix_fmt yuv420p -g 50 -c:a aac -b:a 128k -ac 2 -ar 44100 -f flv rtmp://a.rtmp.youtube.com/live2/yourkey

You then point the DJI Go 4 app to stream on rtmp://127.0.0.1/live/mystream

Multistreaming on adroid can be done very easily with ffmpeg, first install ffmpegui

There you can listen for rtmp and restream to as many links and any format you want; to give you an example you may enter a command like this:
ffmpeg -listen 1 -i rtmp://127.0.0.1:1935/live/mystream -c copy -f flv rtmp://live-lhr04.twitch.tv/app/yourkey -c copy -f rtsp -rtsp_transport tcp rtsp://MyObs/live/stream -c:v libx264 -preset superfast -maxrate 2500k -bufsize 5000k -r 25 -pix_fmt yuv420p -g 50 -c:a aac -b:a 128k -ac 2 -ar 44100 -f flv rtmp://a.rtmp.youtube.com/live2/yourkey

You then point the DJI Go 4 app to stream on rtmp://127.0.0.1/live/mystream