28. A short film generation/reproduction apparatus for generating a video using at least one still picture and reproducing the video, the short film generation/reproduction apparatus comprising: an input unit operable to obtain a still picture inputted from outside; a database unit operable to store the at least one still picture, a style including (i) a predetermined number of effects specifying what kind of visual effect is used to reproduce the at least one still picture which is a target of each of the predetermined number of effects and (ii) a parameter, and music used for the video to be generated, and a scenario generation unit operable to generate a scenario of the video, based on a predetermined feature of the style and a predetermined feature of the music, wherein the input unit includes an object information extraction unit operable to automatically extract an object included in a still picture every time a still picture is inputted from outside by a user, and to store, in the database unit, object information including a position of the extracted object, and wherein the scenario generation unit includes: an effect arrangement unit operable to select effects one by one from among a group of effects stored in the database unit, and to arrange the selected effects one by one in a time domain; a still picture assignment unit operable to automatically assign a still picture to each of the effects arranged in the time domain by the effect arrangement unit, each of the effects having the still picture assigned thereto based on the object information stored in the database unit, the still picture satisfying a picture feature required by the respective effects; and a parameter setting unit operable to generate the scenario by describing a parameter indicating processing to be performed on the object suitable for each of the effects arranged in the time domain by the effect arrangement unit, and to store the generated scenario in the database unit.
28. A short film generation/reproduction apparatus for generating a video using at least one still picture and reproducing the video, the short film generation/reproduction apparatus comprising: an input unit operable to obtain a still picture inputted from outside; a database unit operable to store the at least one still picture, a style including (i) a predetermined number of effects specifying what kind of visual effect is used to reproduce the at least one still picture which is a target of each of the predetermined number of effects and (ii) a parameter, and music used for the video to be generated, and a scenario generation unit operable to generate a scenario of the video, based on a predetermined feature of the style and a predetermined feature of the music, wherein the input unit includes an object information extraction unit operable to automatically extract an object included in a still picture every time a still picture is inputted from outside by a user, and to store, in the database unit, object information including a position of the extracted object, and wherein the scenario generation unit includes: an effect arrangement unit operable to select effects one by one from among a group of effects stored in the database unit, and to arrange the selected effects one by one in a time domain; a still picture assignment unit operable to automatically assign a still picture to each of the effects arranged in the time domain by the effect arrangement unit, each of the effects having the still picture assigned thereto based on the object information stored in the database unit, the still picture satisfying a picture feature required by the respective effects; and a parameter setting unit operable to generate the scenario by describing a parameter indicating processing to be performed on the object suitable for each of the effects arranged in the time domain by the effect arrangement unit, and to store the generated scenario in the database unit. 29. The short film generation/reproduction apparatus according to claim 28 , wherein the picture feature required by each of the effects is a feature of the object.