This paper proposes a rate control method providing the maximum subjective video quality using the minimum transmission rate for streaming video services on mobile data terminals. At that time, because user perceptive video quality differs greatly with video contents, we need to consider the control method with reference to them. In this paper, we conduct subjective assessment and analyze the relationship between video content and subjective video quality. The proposed scheme makes it possible to provide high-quality streaming services under the condition of using limited fixed-size monitors.