If you are looking for a lightweight way to offer a presentation for your RTMP and RTSP streams this project may assist. The project is based on the usage of cameras that support RTMP streams (and with a helper RTSP streams).
https://jared.geek.nz/2023/11/streaming-rtmp-with-openwrt/
https://www.nginx.com/products/nginx/modules/rtmp-media-streaming/