CentOS

I try to connect to Facebook but they don't support TLS, only SSL.

info: [rtmp stream: 'adv_stream'] Connecting to RTMP URL rtmps://live-api.facebook.com:443/rtmp/...
info: RTMP_Connect1, TLS_Connect failed: -0x7680
info: [rtmp stream: 'adv_stream'] Connection to rtmps://live-api.facebook.com:443/rtmp/ failed: -2


I have installed openssl-devel and compiled OBS with "-DUSE_SSL=ON" according to https://github.com/ewwink/OBS-with-RTMPS-SSL-TLS but it doesn't seem to say anything about SSL support in the build logs.

Any hints are appreciated!

I try to connect to Facebook but they don't support TLS, only SSL.

No, that's wrong. I tested using openssl s_client -connect live-api.facebook.com:443 and it connects just fine using TLS 1.2.

OK.

But why does OBS try to connect with TLS, not SSL?

Because all versions of SSL are insecure and only TLS is worth using? In fact TLS 1.0 shouldn't be used either and it's strongly recommended that you only use 1.2 or higher (though CentOS 7 does not support 1.3).

It works from here also with openssl s_client -connect live-api.facebook.com:443

I tried to compile again and I get the following warning:

CMake Warning:
Manually-specified variables were not used by the project:

USE_SSL

Is USE_SSL=ON deprecated or is there another parameter?

Edit: I changed to USE_SSL=1 and now got no warning. Still same error when connecting.

I found a workaround on the OBS forums:

https://obsproject.com/forum/threads/un ... ost-398580