In an information processing apparatus, an extracting unit extracts a feature quantity from a subject content. A detecting unit detects from the second content a similar portion where a degree of coincidence between each feature quantity extracted from the second content and the feature quantity included in the key information is higher than a first threshold value, and outputs range information specifying a range of the similar portion. A correspondence generating unit retrieves the similar portion included in the range indicated by the detected range information, and generates correspondence information associating the retrieved similar portion with the key information. A presenting unit presents the key information selectably based on the correspondence information.