1. An image encoding method, comprising; generating a succession of decoded images from a respectively corresponding succession of original images with the aid of a first encoding method; generating a succession of second images from a respectively corresponding group of images from the succession of original images with the aid of a second encoding method comprising: generating at least one image area of one of the second images with the aid of an INTER-coding mode of the second encoding method, whereby the second image represents a first original image of the original images, and using at least one of the decoded images as a reference image to generate the image area with the aid of the INTER-coding mode, whereby the decoded image used as the reference image represents a second original image of the original images, and selecting the reference image such that the first original image differs from the second original image.