A playback device is provided that includes a readout unit that reads out data recorded in a recording medium and a playback unit. Data including a digital stream file obtained by encoding video information is recorded in the recording medium. A recording region of the recording medium has a first recording region where reading is performed at a first read rate, and a second recording region where reading is performed at a second read rate that is faster than the first read rate. In a file system, the data is classified into the digital stream file having real-time attributes and a data file having non-real-time attributes, wherein the data file read in during playback of the digital stream file is recorded in the same recording region where the digital stream file being played is recorded. The readout unit reads out the data without changing the first or second read rate.