ffmpeg version 4.0.1-static https://johnvansickle.com/ffmpeg/
Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516

configuration:
--enable-gpl
--enable-version3
--enable-static
--disable-debug
--disable-ffplay
--disable-indev=sndio
--disable-outdev=sndio
--cc=gcc-6
--enable-fontconfig
--enable-frei0r
--enable-gnutls
--enable-gray
--enable-libaom
--enable-libfribidi
--enable-libass
--enable-libvmaf
--enable-libfreetype
--enable-libmp3lame
--enable-libopencore-amrnb
--enable-libopencore-amrwb
--enable-libopenjpeg
--enable-librubberband
--enable-libsoxr
--enable-libspeex
--enable-libvorbis
--enable-libopus
--enable-libtheora
--enable-libvidstab
--enable-libvo-amrwbenc
--enable-libvpx
--enable-libwebp
--enable-libx264
--enable-libx265
--enable-libxml2
--enable-libxvid
--enable-libzimg

libavutil      56. 14.100 / 56. 14.100
libavcodec     58. 18.100 / 58. 18.100
libavformat    58. 12.100 / 58. 12.100
libavdevice    58.  3.100 / 58.  3.100
libavfilter     7. 16.100 /  7. 16.100
libswscale      5.  1.100 /  5.  1.100
libswresample   3.  1.100 /  3.  1.100
libpostproc    55.  1.100 / 55.  1.100

Hyper fast Audio and Video encoder

usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...

ERROR DOMException: Failed to read the 'buffered' property from 'SourceBuffer': This SourceBuffer has been removed from the parent media source.