A study on new scalabe video coding for quality control

Over the broadband internet, we often use video contents. In addition, not only broadcast but also IPTV are used in large display and PC now. In these cases, basically speaking, we think that they enjoy some video contents in fixed TV environments. Moreover, in this paper, we pay attention to ¿Video Contents Distribution System¿, and once they receive some contents data, we have to consider how to manage them and to control the quality for several user terminals and to support any network environment in integrated video contents delivery and distribution systems. In this paper, we consider an algorithm of scalable video coding in order to control the video quality easily according to the diversity of usage of video contents. We had proposed a video transcoding method using scalable structure based on linear process in quantized domain. Although it is the point that quantization parameters are used between base layer and enhancement layer, when the efficiency of coding prediction goes down, amount of coded bits also goes on increasing at the same time, you know. Its efficiency affects the control of the video quality. In this study, after we consider those situations as noted above, we propose the concept of quantization parameters description and a new modified method of scalable video coding to provide multi-quality video to users.