Abstract: The invention relates to a method of coding an input digital video sequence corresponding to an original color image sequence, said method comprising at least a step for converting the video sequence from the spatial domain to less representation data, a quantizing step, for transforming the converted signals thus obtained into a reduced set of data, and a step for coding said quantized data. According to the invention, said coding method also comprises, before said converting step, a preprocessing step, provided for determining if the input video sequence is in the YUV color space and then transforming said YUV color space into a less redundant color space by means of a non-linear transformation.