everything worked ok until Dec 5,
then - whenever I try to mux the flashphoner output I get this error:
ffmpeg -i sh.webm -itsoffset -0.05 -i sh_s.webm -r 30 test.mp4
ffmpeg version 3.4.9 Copyright (c) 2000-2021 the FFmpeg developers
built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-44)...