In this work we present a technique for tracking contours from echocardiogram video. Our aim is to calculate area of a heart chamber, say, left ventricle(LV), over time from the video. To do so, we have tried to estimate LV boundary by an ellipse for each frame. The system requires a user drawn ellipse describing the LV in the first frame. For the next frames, this ellipse is adjusted according to the movement of the LV. Tracking of this movement is done using edge information of LV. Finally, in all frames, the elliptic contour is allowed to converge to the desired boundary using active contouring principle.