Great job on this library!
I was looking for something similar to rtmpdump link from mplayer where we could programatically access containers in rtmp and your library looks promising.
One thing that's not clear:
Is there any way of accessing the flv container from an rtmp stream using this library?
I see you've got the outboundStream struct in outboundstream.go link
Is there any way of accessing the underlying flv container?