I'm not sure how to implement it, but yes it should be allowed.

Think of an application where user uploads audio to their cloud storage and it is automatically categorised. The exact time limit hasn't been decided yet. My task is to do some literature review and experiments to find out the least time needed for fairly high classification accuracy.

I said 1 second based on the amount of time beyond which the user might feel labelling the file himself is more convenient.

Thanks for the ideas