1. A method to be executed at least in part in a computing device for providing a sharpness metric associated with received video quality in a video conference system, the method comprising: receiving a decoded video frame at a post-processing module; dividing the frame into blocks; determining edge blocks; computing local sharpness metrics for each of the edge blocks based on a kurtosis and a motion vector for each respective edge block; and computing an overall sharpness metric for the frame by pooling the local sharpness metrics over the entire frame.