Facebook Live: FFmpeg RTMPS error messages

[josev814]

I was able to successfully stream to YouTube, but when trying to stream to Facebook it fails. I updated the api url to be rtmps://live-api-s.facebook.com:443/rtmp/, since 80 is deprecated. When trying to stream to facebook I get the following issues.

This message repeats a couple times, and then hits 100% of size for rfbufsize and keeps repeating.
[dshow @ 000001d3f3a5c4a0] real-time buffer [Microphone (Realtek High Definition Audio)] [audio input] too full or near too full (63% of size: 3041280 [rtbufsize parameter])! frame dropped!

When stopping the process I get these errors which seem to pertain to the additional query string parameters that facebook provides with it's streaming key:
[tls @ 000001d3f74cbc60] Unable to read from socket [tls @ 000001d3f74cbc60] Failed to send close message rtmps://live-api-s.facebook.com:443/rtmp/150700682599743?s_bl=1: I/O error 's_ps' is not recognized as an internal or external command, operable program or batch file. 's_sml' is not recognized as an internal or external command, operable program or batch file. 's_sw' is not recognized as an internal or external command, operable program or batch file. 's_vt' is not recognized as an internal or external command, operable program or batch file. 'a' is not recognized as an internal or external command, operable program or batch file.

[scivision]

I am also seeing FFmpeg not working to Facebook now that RTMPS is mandatory. I will need to look further.

[scivision]

I see different symptoms from Linux and Windows

• Windows FFmpeg 4.1.3: [rtmps ..] ... Resource temporarily unavailable and no video shown on site
• Ubuntu 18.04 FFmpeg 3.4.6 [tls ...] ... The specified session has been invalidated for some reason. and a few seconds of video

This happens with just FFmpeg itself from the command line, so I'm tempted to think it's an FFmpeg issue, I've seen others on the web talking about this. Or maybe I'm missing a command line option.

[scivision]

This appears to be fixed by FFmpeg >= 4.2