I am studying English with video lecture.
The lecturer often says "I'll see you in just a bit. " before moving to reviewing part.
But I don't get what he means.
Is there anyone who could help me? Does it mean "see you soon?"
Yes, it "means see you soon."
I would say that if I were meeting someone in a short amount of time.
A lecturer on a video might say it when he is going to be off screen for a short while and then come back. Or he might say it meaning that he'll 'see' you when he appears on the next video. (In reality on a video, you see him, he doesn't see you. ) Or perhaps he uses it for another reason.