Edit a video file
ffmpeg -i videofilename.format -ss 00:00:00 (fill in the starting time log) -to 00:00:00 (fill in the ending time log) newvideofilename.format

Extract stills from a video file
ffmpeg -i videofilename.format -r 25 (frames/second) img_%02d.png -hide_banner

Here are some of the commands that I use daily 👇🏽

Convert a video codec
ffmpeg -i video filename.format video filename.newformat

Convert a video file into an audio
ffmpeg -i video filename.format audio filename.format

*Breakdown
ffmpeg = calling card
-i = input from