Extract a Random Frame

[Jay123210599]

How do I extract only one single, individual, and random frame/keyframe from an entire video using ffmpeg?

[Selur]

You could have solved this by using the internet search machine of your choice,...

one single at time code '01:23:45.123':

ffmpeg -ss 01:23:45.123 -i "PATH TO source file" -frames:v 1 g:\output.png

a single random frame can be extracted by using a random time code.

For extracting keyframes or scene changes, read: https://jdhao.github.io/2021/12/25/ffmpeg-extract-key-frame-video/
if you add '-frames:v 1' only one frame will be extracted.
if you add '-ss 01:23:45.123' before the input only the next frame that matches the criteria will be extracted.