nginx-rtmp-module VS galene

Regarding the first solution, I've looked through some of the source code for the NGINX RTMP Module, and I believe the code I would need to modify lives in the ngx_rtmp_cmd_module.c file: https://github.com/arut/nginx-rtmp-module/blob/master/ngx_rtmp_cmd_module.c

You could look at setting up the RTMP module on nginx and securing it with lets encrypt - https://github.com/arut/nginx-rtmp-module

foobar2000 -> OBS -> nginx server running nginx-rtmp-module

If stuck for a server I've used this in the past. nginx with an RTMP module.

Also linking a config file I commented. Unsure if it'll still work and you can definitely simplify it for OP's needs. It was a proof of concept for a streaming service I was thinking up before realising how much money I don't have, haha

https://github.com/arut/nginx-rtmp-module

https://gist.github.com/cohan/7f676d3f561be62d0550785c015f00...

If you can only output something like RTMP, then your options are a bit more limited. Set up an RTMP server somewhere (e.g. https://github.com/arut/nginx-rtmp-module), and connect with another client that will soak up the RTMP into a file - I think ffmpeg should be able to do that, but I've had the most luck with GStreamer. Again, avoid transcoding it on the way into a file, both ffmpeg and GStreamer can be set up to never touch the encoded media (just copy/pass it along).

Are you using the rtmp nginx module?

FROM buildpack-deps:stretch ENV NGINX_VERSION nginx-1.18.0 ENV NGINX_RTMP_MODULE_VERSION 1.2.1 RUN apt-get update && \ apt-get install -y ca-certificates openssl libssl-dev && \ rm -rf /var/lib/apt/lists/* RUN mkdir -p /tmp/build/nginx && \ cd /tmp/build/nginx && \ wget -O ${NGINX_VERSION}.tar.gz https://nginx.org/download/${NGINX_VERSION}.tar.gz && \ tar -zxf ${NGINX_VERSION}.tar.gz RUN mkdir -p /tmp/build/nginx-rtmp-module && \ cd /tmp/build/nginx-rtmp-module && \ wget -O nginx-rtmp-module-${NGINX_RTMP_MODULE_VERSION}.tar.gz https://github.com/arut/nginx-rtmp-module/archive/v${NGINX_RTMP_MODULE_VERSION}.tar.gz && \ tar -zxf nginx-rtmp-module-${NGINX_RTMP_MODULE_VERSION}.tar.gz && \ cd nginx-rtmp-module-${NGINX_RTMP_MODULE_VERSION} RUN cd /tmp/build/nginx/${NGINX_VERSION} && \ ./configure \ --sbin-path=/usr/local/sbin/nginx \ --conf-path=/etc/nginx/nginx.conf \ --error-log-path=/var/log/nginx/error.log \ --pid-path=/var/run/nginx/nginx.pid \ --lock-path=/var/lock/nginx/nginx.lock \ --http-log-path=/var/log/nginx/access.log \ --http-client-body-temp-path=/tmp/nginx-client-body \ --with-http_ssl_module \ --with-threads \ --with-ipv6 \ --add-module=/tmp/build/nginx-rtmp-module/nginx-rtmp-module-${NGINX_RTMP_MODULE_VERSION} && \ make -j $(getconf _NPROCESSORS_ONLN) && \ make install && \ mkdir /var/lock/nginx && \ rm -rf /tmp/build RUN ln -sf /dev/stdout /var/log/nginx/access.log && \ ln -sf /dev/stderr /var/log/nginx/error.log COPY nginx.conf /etc/nginx/nginx.conf EXPOSE 1935 CMD ["nginx", "-g", "daemon off;"]

But, if it's something you want to do, and want to do it inexpensively you want to use Nginx-RTMP - http://nginx-rtmp.blogspot.com/ - this is a free version of AntMedia Server without the $70 per month fee.

I would like to recommend Galene: https://github.com/jech/galene

Runs in my raspberry pi, a single small executable, like in the old good times.

> Do you happen to know of others by any chance.

There's Galene, <https://galene.org>. It's easy to deploy, uses minimal server resources, and the server is pretty solid. The client interface is still a little awkward, though. (Full disclosure, I'm the main author.)

galene - basically selfhosted zoom/jitsi

What latency are you trying to do? Will the professor being communicating with the students while doing this? Will the students all have the same bandwidth, or will you want multiple renditions (low, med, high quality levels)?

If you want AV1 you will not be able to use RTMP. The protocol is orphaned/deprecated, so avoid if possible!

If I was building it this is what I would do, and my reasoning.

* For capture + encoding I would use OBS. You will want to use something that is easy for users to install configure. Professors will also have lots of custom requirements when it comes to layout etc... it will be tempting to do a ffmpeg command directly, but it will fall apart quick I believe.

* To get AV1 out of OBS I would use FFMPEG output. I would have it send RTP. RTP is used to carry video in a sub-second manner. This is the same protocol that WebRTC uses. You know have AV1 + low latency.

* Then for users to watch I would use WebRTC. That will allow them to watch in their web browser. Conceptually it will be like this https://github.com/pion/webrtc/tree/master/examples/rtp-to-w... this takes the RTP packets and puts them in the browser.

Lots of great projects exist that you could use for 'RTP -> WebRTC' like https://galene.org/ and https://livekit.io/ I would suggest checking them all out!

If you have more questions/want to talk to people in the video space always happy to chat on https://pion.ly/slack :)

galene

The most lightweight all-inclusive central solution for video conferences I know is Galene. It runs in under 200 MB RAM.

Even though the default UI is extremely simplistic, I very much like galene. It bundles all the components you need in a single binary. Even a TURN server so you don't have to fiddle with coturn. Not to mention that it's very resource efficient.