Rate Control Technology in Video Coding

Abstract

The data of original video is very large, so it needs to be compressed and coded to facilitate storage and transmission. With the continuous improvement of video resolution and diversification of content, video compression coding standards are facing new challenges. Although the current network bandwidth has been greatly improved, there are still great challenges for video transmission. As one of the core technologies of video coding, rate control plays the role of resource allocation and source output bit stream adjustment. It can optimize the allocation of the current remaining resources according to the channel state, and dynamically adjust the quantization parameters according to the feedback of the encoder, so as to provide the optimal video quality under the condition of limited bandwidth. In this paper, the current research on rate control is reviewed.