harder and so here is our also simple idea - and the idea - is that we're going to have as positives again videos with the correct sound but as negatives we're going to have that same video that same audio but we're going to displace it in time a little bit okay now this becomes a much harder problem to solve because it's the router is correct the video is correct the only thing that's not correct now is that there is a little bit of a time lag so this representation really needs to very carefully pay attention to to the