Image pick-up apparatus for shooting and reproducing a moving image

A non-transitory computer readable recording medium having a program recorded thereon that is executable by a computer of an image pick-up apparatus that includes an image pick-up unit for shooting a scene at a predetermined shooting frame rate to successively produce plural image frames, the program being executable to cause the computer function as units comprising:

• a reproducing unit for reproducing a moving image at a reproducing speed based on the plural image frames produced by the image pick-up unit;
• a standard frame producing unit for adding and combining the image frames in a group of a predetermined number of the image frames produced by the image pick-up unit to produce a standard frame, wherein the standard frame producing unit performs the adding and combining for a plurality of successive groups of the images frames to successively produce a plurality of standard frames to be reproduced at a standard reproducing frame rate by the reproducing unit, wherein the standard reproducing frame rate is lower than the predetermined shooting frame rate;
• and
• a difference information producing unit for successively producing difference information between each standard frame and each of the image frames in the group of the predetermined number of the image frames produced by the image pick-up unit that were added and combined to produce said each standard frame.