FFMpeg how to set the -preset flag correctly?

Question

fmpeg

ffmpeg -preset ultrafast -i video4.mp4  -vf scale=1920:1080 video5.mp4

Where is the right place to put the -preset flag to make it work?

Answer 1

ffmpeg -i simplescreenrecorder-2022-02-19_18.58.56.mkv -vf scale=1920:1080 video5.mp4 -preset ultrafast