This invention provides a method and apparatus for signal reproduction that can simultaneously reproduce N (N≧2) signals which are previously multiplexed, and simultaneously reproduce N independent signals. This apparatus selectively inputs the independent N coded signals in time division, adds the corresponding stream information to the selected input signal among N kinds of stream information for identifying the input signals, detects the stream information from the respective input signal, decodes the respective input signal by a decoding method corresponding to the respective input signal, which is decided based on the detected stream information, and outputs the decoded signal.