1. A method for scene change detection, the method comprising: accessing a first video signal and a second video signal, wherein both the first video signal and the second video signal represent the same video content but at a different color grade; for a sequence of consecutive frames in the first and second video signals: computing prediction coefficients for a prediction model to generate predicted frames of the first video signal given data of the second video signal; computing prediction errors signals between the generated predicted frames and the corresponding frames of the first input signal; and determining a scene change in the sequence of the consecutive frames based on the prediction error signals, wherein determining a scene change between frames j−1 and j in the sequence of the consecutive frames based on the prediction error signals further comprises computing whether 
 D j−1,j >D j,j+i for i=1, 2,. .. , Ts, where Ts is an integer and D j,k denotes a prediction error computed for the k-th frame in the first video signal using prediction model coefficients computed with data of the first and second video signals up to the j-th frame.