I can't get ffmpeg to work with this addon, https://forum.libreelec.tv
it works on CE, Windows, Linux,
i tried https://forum.libreelec.tv
and, https://forum.libreelec.tv
possibly the builds are incompatible with the kernel of this system
I don't know much about it, but since it works on S905 + processors
then I have to look for some very old version of ffmpeg