Pretty much, yeah.

Rather than jot down in a text file the various ffmpeg commands I use frequently...

Raktajino@laptop:~/Downloads$ history | grep ffmpeg
   12  sudo apt install audacity gimp ffmpeg mplayer
  184  history | grep ffmpeg
  215  ffmpeg -i source.mkv -ss 629 -t 7 out.mkv
  217  ffmpeg -i out.mkv -s 0.5 -vf scale=1280:720 out.mp4
  218  ffmpeg -i out.mkv -ss 0.5 -vf scale=1280:720 out.mp4
  231  ffmpeg -i out.mp4 -vf "subtitles=out.srt" final.mp4
  503  ffmpeg -i toofat.wav toofat.mp3
  ...
  682  history | grep ffmpeg
  684  ffmpeg -i 1.gif -i 2.gif -filter_complex "[1:0] [2:0] concat=n=2" out.gif
  685  ffmpeg -i 1.gif -i 2.gif -filter_complex "[1:0] [2:0] concat=n=2:v=1" out.gif
  686  ffmpeg -i 1.gif -i 2.gif -filter_complex "[1:0] [2:0] concat=n=2:v=1" -map '[v]' out.gif
  687  history | grep ffmpeg
  688  ffmpeg -i 1.gif -i 2.gif -filter_complex "[0:0] 12:0] concat=n=2:v=1" -map '[v]' out.gif
  689  ffmpeg -i 1.gif -i 2.gif -filter_complex "[0:0] 1:0] concat=n=2:v=1" -map '[v]' out.gif
  690  ffmpeg -i 1.gif -i 2.gif -filter_complex "[0:0] [1:0] concat=n=2:v=1" -map '[v]' out.gif
  691  ffmpeg -i 1.gif -i 2.gif -filter_complex "[0:0] [1:0] concat=n=2"  out.gif
  694  history | grep ffmpeg