  Early action proposal consists in generating high quality candidate temporal
segments that are likely to contain an action in a video stream, as soon as
they happen. Many sophisticated approaches have been proposed for the action
proposal problem but from the off-line perspective. On the contrary, we focus
on the on-line version of the problem, proposing a simple classifier-based
model, using standard 3D CNNs, that performs significantly better than the
state of the art.
