1. An apparatus for extracting features from a video comprising: a frame rate converter for performing a frame rate conversion on the video to a preset frame rate; a gray scale converter for performing a grey scale conversion on the frame rate-converted video; a frame size normalizer for performing a frame size normalization on the gray scale-converted video to a preset image size; and a feature extractor for partitioning the normalized video into image blocks of a predetermined size, and extracting features from the image blocks on the basis of luminance values of the image blocks.