Help for packaging Open Streaming Platform

I recently found out about a web app named Open Streaming Platform, which aims to be a free software, self-hosted replacement for Twitch and similar livestream platforms. The installation instructions seem straightforward, as the app is based on Nginx natively and there’s even a Docker image available; however, the web app depends upon a Nginx module to enable RTMP, which I’m not sure would be supported on Debian-stable. What would be the safest way to install the required module via Yunohost, and which cautions should I take to avoid issues with specific versions of Debian?