Hi,

I use the version : 18.0.063 x64

When I test on Facebook.. it's okay.

But don't on RTMP Custom.

I changed login:pass willingly.

We installed a server on Debian : CRTMP.

ffmpeg started on 2017-12-15 at 14:37:48
Report written to "C:\ProgramData\vMix\streaming\streaming 20171215-143748.log"
Command line:
"C:\\Program Files (x86)\\vMix18of\\streaming\\ffmpeg.exe" -report -rtbufsize 256M -f dshow -i "video=vMix Video:audio=vMix Audio" -codec:v libx264 -s:v 640x360 -pix_fmt:v yuv420p -threads 4 -bufsize:v 400k -g:v 50 -preset:v veryfast -profile:v baseline -level:v 3.1 -b:v 400k -maxrate:v 440k -codec:a libfaac -b:a 96k -strict -2 -rtmp_flashver "FMLE/3.0 (compatible; vMix/18.0.0.63)" -f flv rtmp://login:pass@www.web13tv.tv/flvplayback/live
ffmpeg version 2.8.git Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 4.8.1 (rev2, Built by MinGW-W64 project)
configuration: --enable-gpl --enable-version3 --enable-libx264 --enable-zlib --enable-libfaac --enable-nonfree --cpu=i686 --enable-nvenc
libavutil 55. 2.100 / 55. 2.100
libavcodec 57. 3.100 / 57. 3.100
libavformat 57. 2.100 / 57. 2.100
libavdevice 57. 0.100 / 57. 0.100
libavfilter 6. 9.100 / 6. 9.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.100 / 2. 0.100
libpostproc 54. 0.100 / 54. 0.100
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, dshow, from 'video=vMix Video:audio=vMix Audio':
Duration: N/A, start: 439158.708000, bitrate: 1536 kb/s
Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 640x360, 25 tbr, 10000k tbn, 25 tbc
Stream #0:1: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
[tcp @ 06ee7260] TCP Buffer has been set to 1240064 bytes
[tcp @ 06ee7260] TCP Buffer has been set to 1240064 bytes
[rtmp @ 06f5bc20] Ignoring unsupported var reason
[tcp @ 06ee7260] TCP Buffer has been set to 1240064 bytes
[rtmp @ 06f5bc20] Server error: Specified stream not found in call to releaseStream
[rtmp @ 06f5bc20] Server error: call to function _checkbw failed
rtmp://login:pass@www.web13tv.tv/flvplayback/live: Unknown error occurred

We can't read the stream on server :
Log server :
1513340076:2:/build/crtmpserver-cg4puE/crtmpserver-1.0~dfsg/thelib/src/protocols/rtmp/basertmpappprotocolhandler.cpp:1241:ProcessInvokeGeneric:Default implementation of ProcessInvokeGeneric: Request: _checkbw

An idea ?? Please
Thks you all

Agreed.