I've been struggling to learnt he FFMpeg CLI - as well as MEncoder CLI - theres a lot of things in the CLI that overwhelm me - but I feel guilty for using the GUI frontends rather than using the CLI because I'm on Linux.

I guess my question is, is it so bad to use the GUI of a program like FFMpeg for converting my multimedia rather than using the CLI (or atleast using it at this point in time)? Because I've had people tell me that if I don't understand it I shouldn't be using Linux..

Is is possible to learn the CLI from the output that the GUI frontend puts out?