A method and system are provided for coding or decoding a series of images, wherein base information is determined using a method for source coding, with residual error information being produced during the source coding between the series of images and a coded series of images, the additional information is generated for the gradual display of residual error information, in that the residual error information is subdivided into frequency ranges and gradually scaled, and the series of images is coded using the base information and the additional information, with the additional information guaranteeing a progressive improvement in the coding quality.