Timeout when streaming to Facebook

[DanielFrankDK]

Question

I've set up an RTMP/RTSP streaming-service with MediaMTX on my desktop.

From OBS Studio, I'm then streaming to:

Server: rtmp://localhost/
Stream Key: stream

This leaves me with 2 streams:

RTMP: rtmp://localhost/stream
RTSP: rtsp://localhost:8554/stream

MediaMTX is then set up to re-distribute the stream to YouTube, Twitch, and Facebook simultaneously, using ffmpeg.

Streaming to YouTube and Twitch is no problem. But whenever I'm trying to stream to Facebook, I always get timeout errors.

The command

C:/mediamtx_v1.3.0/ffmpeg.exe -i "rtmp://localhost/stream"
-c:v libx264 -b:v 4500k -r 60 -g 120 -f flv "rtmp://a.rtmp.youtube.com/live2/YOUTUBE_STREAM_KEY"
-c copy -f flv "rtmp://ber.contribute.live-video.net/app/TWITCH_STREAM_KEY"
-c copy -f flv rtmps://live-api-s.facebook.com:443/rtmp/FACEBOOK_STREAM_KEY

This part of the code, is what fails:

-c copy -f flv rtmps://live-api-s.facebook.com:443/rtmp/FACEBOOK_STREAM_KEY

Let's try streaming to Facebook only:

C:/mediamtx_v1.3.0/ffmpeg.exe -i "rtmp://localhost/stream" -c copy -f flv rtmps://live-api-s.facebook.com:443/rtmp/FACEBOOK_STREAM_KEY

2023/11/20 10:15:25 INF MediaMTX v1.3.0
2023/11/20 10:15:25 INF configuration loaded from C:\mediamtx_v1.3.0\mediamtx.yml
2023/11/20 10:15:25 DEB [path stream] created
2023/11/20 10:15:25 DEB path manager created
2023/11/20 10:15:25 INF [RTSP] listener opened on :8554 (TCP), :8000 (UDP/RTP), :8001 (UDP/RTCP)
2023/11/20 10:15:25 INF [RTMP] listener opened on :1935
2023/11/20 10:15:25 INF [HLS] listener opened on :8888
2023/11/20 10:15:25 INF [WebRTC] listener opened on :8889 (HTTP), :8189 (ICE/UDP)
2023/11/20 10:15:25 INF [SRT] listener opened on :8890 (UDP)
2023/11/20 10:15:30 INF [RTMP] [conn [::1]:55162] opened
2023/11/20 10:15:30 INF [path stream] runOnReady command started
2023/11/20 10:15:30 INF [RTMP] [conn [::1]:55162] is publishing to path 'stream', 2 tracks (H264, MPEG-4 Audio)
ffmpeg version N-112782-g07c303b708-20231118 Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 13.2.0 (crosstool-NG 1.25.0.232_c175b21)
  configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --disable-w32threads --enable-pthreads --enable-iconv --enable-libxml2 --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-libharfbuzz --enable-libvorbis --enable-opencl --disable-libpulse --enable-libvmaf --disable-libxcb --disable-xlib --enable-amf --enable-libaom --enable-libaribb24 --enable-avisynth --enable-chromaprint --enable-libdav1d --enable-libdavs2 --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libkvazaar --enable-libaribcaption --enable-libass --enable-libbluray --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librist --enable-libssh --enable-libtheora --enable-libvpx --enable-libwebp --enable-lv2 --enable-libvpl --enable-openal --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-librav1e --enable-librubberband --enable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --disable-libdrm --enable-vaapi --enable-libvidstab --enable-vulkan --enable-libshaderc --enable-libplacebo --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-ldexeflags= --extra-libs=-lgomp --extra-version=20231118
  libavutil      58. 32.100 / 58. 32.100
  libavcodec     60. 33.100 / 60. 33.100
  libavformat    60. 17.100 / 60. 17.100
  libavdevice    60.  4.100 / 60.  4.100
  libavfilter     9. 13.100 /  9. 13.100
  libswscale      7.  6.100 /  7.  6.100
  libswresample   4. 13.100 /  4. 13.100
  libpostproc    57.  4.100 / 57.  4.100
2023/11/20 10:15:30 INF [RTMP] [conn [::1]:55163] opened
2023/11/20 10:15:30 INF [RTMP] [conn [::1]:55163] is reading from path 'stream', 2 tracks (H264, MPEG-4 Audio)
Input #0, flv, from 'rtmp://localhost/stream':
  Duration: N/A, start: 0.066000, bitrate: N/A
  Stream #0:0: Video: h264 (High), yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 30.30 fps, 30 tbr, 1k tbn
  Stream #0:1: Audio: aac (LC), 48000 Hz, stereo, fltp
Output #0, flv, to 'rtmps://live-api-s.facebook.com:443/rtmp/FACEBOOK_STREAM_KEY:
  Metadata:
    encoder         : Lavf60.17.100
  Stream #0:0: Video: h264 (High) ([7][0][0][0] / 0x0007), yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 30.30 fps, 30 tbr, 1k tbn
  Stream #0:1: Audio: aac (LC) ([10][0][0][0] / 0x000A), 48000 Hz, stereo, fltp
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
2023/11/20 10:15:53 INF [RTMP] [conn [::1]:55163] closed: write tcp [::1]:1935->[::1]:55163: i/o timeout
[vost#0:0/copy @ 0000023806b8ac00] Error submitting a packet to the muxer: End of file
[flv @ 0000023806b8a940] Failed to update header with correct duration.
[flv @ 0000023806b8a940] Failed to update header with correct filesize.
[out#0/flv @ 0000023806af45c0] Error writing trailer: End of file
[out#0/flv @ 0000023806af45c0] Error closing file: End of file
[out#0/flv @ 0000023806af45c0] video:58kB audio:194kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
size=       3kB time=00:00:08.39 bitrate=   3.4kbits/s speed=0.07x
Conversion failed!
2023/11/20 10:17:43 INF [path stream] runOnReady command exited: command exited with code 0

Instant timeout only occurs when using flv format. When using another format like mpegts, I can stream for up to a minute, and then timeout occurs. The stream never hits Facebook, though.

I want to mention that I've tried streaming exclusively to Facebook from within OBS Studio, and this works fine. So, I'm certain that I'm doing something wrong when using ffmpeg.

Can someone help me crack this nut?

[DanielFrankDK]

OK, so after a lot of digging, it seems that this whole ordeal is due to Facebook-s retirement of rtmp-streamingneither. They've switched to rtmps, which MediaMTX, nginx or ffmpeg doesn't natevely doesn't support. Here's a workaround:

https://josuesworld.wordpress.com/2019/04/05/how-to-use-rtmp-and-rtmps-with-nginx-on-windows/

[aler9]

Hello, MediaMTX does support RTMPS, the problem here is that you're performing stream forwarding, which at the moment can only be achieved by using an external integration, like FFmpeg or GStreamer. Both supports RTMPS too.

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