You have two options:
1) Start a server on your network that retransmits rtsp as hls.
a) wowza - popular, dear b) live 555 - for free, a lot of work d) ffserver - free and basic, because he gets a lot of work to do the work.
Advantage: No bandwidth limits for cellular or Wi-Fi playing with native players in apples
Inconvenience
High server bandwidth - if you pay for server time, you can watch this. high distance - forget about any kind of live video.
2) Run the player based on FFmpeg on the device
Benefits
:
a) It is much easier than before, we do it all the time b) deal with the lgpl license, clear instructions on ffmpeg.org, and not with a huge hassle c) everything on the device, problems with loading the server.
disadvantages
Limited bandwidth compared to celluar (about 10 minute intervals), unlimited Wi-Fi
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