1. A playback apparatus comprising: a first memory; a multimedia processor configured to allocate a first stream buffer area, the first stream buffer area configured to store an encoded video data in the first memory, and the multimedia processor comprising a decoder configured to decode the encoded video data and an arithmetic module configured to execute super-resolution conversion in order to increase a resolution of the decoded video data; an issuing module configured to issue a switching request in order to switch between execution and non-execution of the super-resolution conversion; a second memory; and a main processor configured to execute a decoding program application for decoding the encoded video data, and to execute a switching program application configured to switch a destination where the decoding is executed between the multimedia processor and the decoding program application such that a picture group which is a unit for managing the encoded video data is not separately supplied to two destinations, in response to the switching request issued from the issuing module, wherein the decoding program application is configured to allocate a second stream buffer area in the second memory for storing the encoded video data and a decoding buffer area in the second memory for storing data related to decoding, and wherein the switching program application is configured to switch the destination from the multimedia processor to the decoding program application in a state that the encoded video data is not stored in the first stream buffer area of the first memory, and to switch the destination from the decoding program application to the multimedia processor in a state that the encoded video data is not stored in the second stream buffer area and the data related to decoding is not stored in the decoding buffer area.