1. A video display device configured to play contents comprising audio, the video display device comprising: a controller configured to receive a request for a condensed version of the contents and to search the contents based on audio characteristics information corresponding to a condensing criterion in order to output the condensed version; and a display configured to display the contents, wherein the condensing criterion comprises at least a specific word, a name of a main character, an original sound track, a sound effect or a voice print of an actor.