1. A method of processing a frame in a video sequence of digital images, the method comprising: determining a global motion vector for the frame relative to a previous frame in the video sequence; deriving a jitter function from the global motion vector, the jitter function comprising an estimate of an undesired motion of the frame relative to the previous frame; determining whether the frame is blurred above a first predetermined threshold; and if the frame is blurred above the first predetermined threshold, stabilising the frame using the jitter function and applying a deblur function to the frame.