Think you might have a editorial content left under the headline "Installing FFmpeg Check". There are instructions for installing FFmpeg (first I thought it was

Think you might have a editorial content left under the headline "Installing FFmpeg Check". There are instructions for installing FFmpeg (first I thought it was maybe some tool called "FFmpeg Check" to "check" the output of an FFmpeg command line, like in the above screenshot, but this turned out not to be the case :)