Finding screen recording

I was creating a YouTube video using the screen recorder. At the end of the video i thought i stopped it but I'm not sure because i could not find the footage of it on my computer, then i went to shut off my computer and there was (i think) a screen recording window and it opened then shut quickly before the computer turned off. It would be super helpful if the footage was still on the computer, is there a chance that it is and if so how do i find it? Thank you!