1. An image processing system including an image processing apparatus and a control apparatus for controlling the image processing apparatus, said control apparatus comprising: a structured document acquiring portion to acquire a structured document including a moving image; a print data generating portion to generate print data, the print data including a still image on which one frame selected from among a plurality of frames included in said moving image is arranged at a position, in a display image for displaying said acquired structured document, where said moving image is displayed, positional information indicating a position within said still image where said frame is arranged, and moving image identification information for identifying said moving image; and a transmitting portion to transmit said generated print data and said moving image to said image processing apparatus, said image processing apparatus comprising, in relation to image forming: a receiving portion to receive said print data and said moving image from said control apparatus; a storing portion to store said received moving image in association with said moving image identification information included in said print data; an embedding portion to embed, in a still image included in said received print data, the moving image identification information for said stored moving image and said positional information included in said received print data; and an image forming portion to form said still image on a recording medium, said image processing apparatus further comprising, in relation to image reading: a reading portion to read said still image formed on said recording medium; an extracting portion to extract said moving image identification information and said positional information from said read still image; a moving image acquiring portion to acquire a moving image identified by said extracted moving image identification information; and a reconfiguration portion to generate a structured document in which said acquired moving image is associated with said read still image in such a manner that said moving image is displayed at a position, in said still image, that is specified by said extracted positional information.