An apparatus reproduces a bit stream signal from a disk and the bit stream is controlled to ensure that only requested bit stream data is coupled for MPEG decoding. A transducer is repositioned to obtain requested bit stream data prior to completion of preceding MPEG picture decoding. The bit stream data is read prior to buffer storage to select wanted data for storage and to reject unwanted data. Buffer storage is reallocated for trick play operation and is random accessed to facilitate trick play picture selection. MPEG picture decoding and storage are controlled to facilitate frame decoding within one field period. Decoded pictures are stored and read out substantially concurrently within a field period.
