There are a few key differences between online video and connected TV. Connected TV generally refers to a TV that is connected to the internet, while online video refers to video that is accessed through the internet. One key difference is that connected TV usually offers a more traditional television experience, with a focus on live and linear programming, while online video is more often on-demand and non-linear. Additionally, online video is often shorter form and snackable, while connected TV tends to be longer form and more like traditional TV programming. Finally, online video is often free or ad-supported, while connected TV typically requires a subscription.