Distributed video coding (DVC) is defined such as a correlated video sequence is transmitted via the distributed independent encoders, and it can be decoded conditionally at the decoder. In the DVC coding, if an encoder encodes the video frame X and the side information Y is at the decoder, where the side information is computed using the adjacent frames of the X known as key frames. The side information Y is considered as a prediction of X, and the correlation noise is defined as a residual error between the transmitted frame and the side information at the decoder. In this paper we analyze the behavior of the correlation noise N for different video sequences. We have analyzed the correlation of the adjacent frames or key frames in Foreman video sequence. This paper also discuss the difference between the channel noise and the correlation noise of the video sequences.