1. A computer-implemented method for estimating distance to an object using motion measurement and video compression attributes derived from video captured by a single camera, comprising: estimating camera velocity using one or more camera motion values provided by an accelerometer associated with the camera; identifying frame motion vectors generated during compression of video captured by the camera; estimating distance to a target object from the one or more camera motion values provided by the accelerometer and motion vector information; and reporting at least one distance-to-object measurement.