Abstract: A television line doubler having a video pixel interpolator and a multi-component motion detector including at least one frame-recursive component for detecting a motion value in the area of the pixel to be interpolated. A second switch switches its output to an interpolated pixel time compression circuit in accordance with the detected motion value. The second switch and the motion detector provide a proportional switch with an onset at approximately 2 to 5 IRE units of motion value and operating in accordance with the absolute amplitude of the motion value. Full switchover to the intra-field interpolator means occurring at approximately 5 to 15 IRE units of motion value amplitude. The motion detector stretches the detected motion to a predetermined number of adjacent pixel location in the line domain and a recirculation loop enables a component of motion to be recirculated.