A reproducing apparatus comprising: separation means for receiving a stream signal including an encoded video signal and an encoded audio signal from a stream generation apparatus and separating the encoded video signal and the encoded audio signal from the stream signal; video-signal decoding means for decoding the encoded video signal and outputting the decoded video signal to a display apparatus; audio-signal decoding means for decoding the encoded audio signal so as to generate a decoded audio signal and outputting the decoded audio signal to the display apparatus; characterized in that it further comprises: delay time measuring means for measuring a temporal difference between an audio signal returned by the display apparatus through a control signal line and the audio signal decoded by the audio-signal decoding means as a video processing time, audio-signal delaying means for calculating a delay amount by subtracting an audio processing time in which an audio signal is processed in the reproducing apparatus from said video processing time and for delaying the audio signal decoded by the audio-signal decoding means in accordance with said calculated delay amount, and thereafter amplifying the delayed audio signal through amplifier means to create an analog signal which is supplied to an audio outputting apparatus. separation means for receiving a stream signal including an encoded video signal and an encoded audio signal from a stream generation apparatus and separating the encoded video signal and the encoded audio signal from the stream signal; video-signal decoding means for decoding the encoded video signal and outputting the decoded video signal to a display apparatus; audio-signal decoding means for decoding the encoded audio signal so as to generate a decoded audio signal and outputting the decoded audio signal to the display apparatus; characterized in that it further comprises: delay time measuring means for measuring a temporal difference between an audio signal returned by the display apparatus through a control signal line and the audio signal decoded by the audio-signal decoding means as a video processing time, audio-signal delaying means for calculating a delay amount by subtracting an audio processing time in which an audio signal is processed in the reproducing apparatus from said video processing time and for delaying the audio signal decoded by the audio-signal decoding means in accordance with said calculated delay amount, and thereafter amplifying the delayed audio signal through amplifier means to create an analog signal which is supplied to an audio outputting apparatus. delay time measuring means for measuring a temporal difference between an audio signal returned by the display apparatus through a control signal line and the audio signal decoded by the audio-signal decoding means as a video processing time, audio-signal delaying means for calculating a delay amount by subtracting an audio processing time in which an audio signal is processed in the reproducing apparatus from said video processing time and for delaying the audio signal decoded by the audio-signal decoding means in accordance with said calculated delay amount, and thereafter amplifying the delayed audio signal through amplifier means to create an analog signal which is supplied to an audio outputting apparatus.