Reverse-proxy nginx + apache modifications

Is it possible to get the reverse-proxy nginx + apache modified to where I can configure the additions installed with nginx?

I'd like to host a small file sharing website and would like to use the nginx rtmp plugin for live streaming and recording.

Is it possible?

Hello,

- Add custom modules to nginx with custombuild 2.0
https://help.directadmin.com/item.php?id=545