Since this is activated after starting the output, it assumes there is
no need to read anything from the connection as RTMP is send-only from
that point on. However with TLS, reading protocol messages is required
for proper operation, causing it to immediately fail on RTMPS
connections. This is a complex fix due to the way it interacts with
librtmp and mbedTLS so let's just disable it for now to avoid breaking
things for users.
9411c548d3