Person 1: How do I make <thing on a video or an audio file> on Linux?

Person 2: Just use ffmpeg.

Ffmpeg's manual: G̴̢̛̱͒̍͆̐̑̈́͒ͅI̵̝̬̲͕̔͒͗̓̽̔V̵̧̛͈͔̦͉̥̞͓͎̞̗͂͐͜E̸̥̳̠̱̲̟̩̅̓̂̂̈͑̐̀͊͑͆͠ ̸̖̣͔̥̆̅̓̍̐̔U̴̯̣͋P̵̨͚͉̥̳͋̌͋͌ ̶̭͙̤̣̯̉̂͗ͅẢ̷̢͓͇̳̹̼͚̘͗̽̈̋͌L̴̹̟͇͇̯̼͉̽̌́͌̚̕Ḽ̶̨̮͓͓̠͕͖͋͛͜ ̸̢̨̩̫̳̹͕̥̗̝̉̽̎͘H̴̢͓̫͍̞̋́͗̏͂̽̓̚O̸̝̫̲̱͘P̵̮̩̦͔̲͚̏̂͗̅̎̈̀̈́́̕͝E̶̛̻̳̳͎̩̹̠͈̒́̐͒̄̊̈́̆̑̚͘