[FFmpeg-user] Ffmpeg doesn't recognize /dev/video0 when run as root?

[christina zou]

> better question - why would anybody start anything dangerous like
multimedia encoders as root? maybe something like SELinux/appamor is
protecting your from yourself

You are probably right.

I want a Ffmpeg command to automatically start when I boot my Pi, without
any interfacing required (login/authentication). I've currently stuck the
command in /etc/rc.local, where everything runs as root. Do you know where
to better place it?