1. A reproducing apparatus comprising: reproducing means for reproducing image data from a recording medium at a speed higher than a normal reproduction speed; storage means for storing a plurality of pictures of image data reproduced by said reproducing means; and forming means for dividing each of a plurality of pictures of image data stored in said storage means into a plurality of regions and for forming one picture of high-speed-reproduction image data by using the different divided regions of the plurality of pictures of image data.