According to one embodiment, a moving image decoding apparatus is applied in a video reproducing apparatus and includes a deblocking filter unit for performing deblocking filtering and a processing load detection unit for detecting an intra-unit processing load including a processing load of a decoder. The moving image decoding apparatus sets a judgment threshold value for judging whether or not to perform the deblocking filtering depending on a load level indicating the level of the magnitude of the intra-unit processing load, judges whether or not a processing parameter obtained from adjacent blocks of a plurality of blocks constituting each frame is greater than the judgment threshold value, and conducts control not to perform the deblocking filtering when the processing parameter is smaller than the judgment threshold value.