[FFmpeg-user] Segmentation fault with tee and fifo muxers

[Carl Eugen Hoyos]

2016-11-04 21:28 GMT+01:00 Maxim Kozlov <rogat1y at gmail.com>:

> Got Segmentation fault using tee and 2xfifo muxers.
> With tee + one fifo evrything works fine.

> /opt/ffmpeg-git-20161104-64bit-static# ./ffmpeg -re -v verbose -i
> sample.mp4 -vf scale=width=-2:height=320,fps=fps=15 -threads 8 -vcodec
> libx264 -force_key_frames "expr:gte(t,n_forced*4)" -profile:v baseline
> -preset:v ultrafast -x264opts
> no-scenecut:force-cfr=1:vbv_maxrate=256:vbv_bufsize=256 -flags:v +cgop
> -acodec aac -ac 2 -ab 256k -ar 44100 -map 0 -f tee "\
> [f=fifo:onfail=ignore:fifo_format=flv]rtmp://host1/live-restream/demo|[f=fifo:onfail=ignore:fifo_format=flv]rtmp://host1/live-restream/demo0"

Is the crash only reproducible with network output or also with file output?
Is an external encoder necessary to reproduce the issue or does it also
happen with a native encoder?
Is a specific input file needed to reproduce or does it also crash with
-f lavfi -i testsrc?

Alternatively, feel free to provide backtrace, disassembly and register
dump.

Carl Eugen