This paper describes our diarization system for the Multimodal Person Discovery in Broadcast TV task of the MediaEval 2015 Benchmark evaluation campaign . The goal of this task is naming speakers, who are appearing and speaking simultaneously in the video, without prior knowledge. Our diarization system is based on multimodal approach to combine audio and visual informations. We extract features from a face in each shot to make visual i-vectors , and introduce them to the provided baseline system. In the case of faces are extracted correctly, the performance becomes better, but based on the test run, clear improvement could not be observed.