An HDTV codec for digital VCR system is developed. The codec employs an intrafield DCT coding algorithm which is suitable for consumer VCR system. In this paper, the coding algorithm and the construction of codec are described. The coding bit rate is about 120Mbps, which the source signal has about 800Mbps with 44.55MHz sampling, so the compression rate is about five. With this compression technique, it becomes possible that long sequences are recorded.