A playback device for replaying a bit stream digitally transmitted which includes detecting means for detecting only intra-picture data in the bit stream that is replayed; extracting means for extracting the detected intra-picture data from the replayed bit stream, according to the result of the detection at the detecting means; replay mode designating means for selecting and designating one of normal replay, slow replay and still replay, as a replay mode; and replay data outputting means for storing the extracted intra-picture data, and outputting the detected intra-picture data as replay picture data, according to a mode signal output by said replay mode designating means.