it is no problem particularly since the sampling numbers in the high and low band widths are the same as each other a processing amount and memory amount in the decoding apparatus in the low band width the adder 35 frame memory 34 and intraframe decoder 36 are the same as those in the high band width the adder 40 frame memory 29 and intraframe decoder 41 there is described a coding apparatus according to a third embodiment of the present invention fig8 is a block diagram showing the coding apparatus according to the third embodiment of this invention the components same as those of the second embodiment shown in fig6 are represented by the same numerals the different portions between fig6 and fig8 reside in that there is a motion compensation interframe prediction coding in which an interframe processing is not performed by hierarchical manner and only an intraframe processing is performed by hierarchical manner since the motion compensation processing can be predicted more properly by performing it in the condition of the precise sampling density the motion compensation processing is performed in the above manner before sub sampling is performed a motion vector mv determiner 51 and a motion compensator 52 are newly provided and the predictive subtracter 32 and the frame memory 34 are provided by one respectively the predictive subtracter 32 subtracts a predictive signal delivered by the motion compensator 52 from an image signal inputted through the image input 1 thereby supplying a predictive residual signal to the vertical sub sampler 2 and subtracter 8 a low band width processing is performed in the vertical.