Apparatus and method for incoding and deconding multi-video

An apparatus and a method for encoding and decoding multi videos are provided to encode the multi videos at an encoding rate higher than an existing multi video encoder, thereby reducing transmission time and transmission bandwidth for transmission of image data. A motion estimator(310) estimates a motion vector for an encoded MB(Macro Block) belonging to an encoded image frame of first image. A motion compensator(320) generates a prediction signal by detecting a reference MB corresponding to a current MB belonging to a current image frame from a reference image frame adjacent to the current image frame based on the estimated motion vector. A difference value calculator(330) calculates a difference value between the current MB and the prediction signal. An image frame selector(340) determines a reference image frame, as an image frame located at the same time axis as the encoded image frame among the encoded image frame and the second frame, as the current image frame and selectively provides the determined frame to the motion compensator. A redundancy removing signal generator(350) generates a redundancy removing signal by calculating difference between a first difference value calculated in correspondence with the encoded image frame and a second difference value calculated in correspondence with the reference image frame.