Recording method and reproduction method

When the Abstract: video data and audio data interleaved recorded system streams (VOB) was carried out reproduction by connecting, at connection of the system stream (VOB), without including video display stop (freeze) occurs an optical disk and an optical disc recording method having a data structure that allows to reproduce naturally as a single title. Between multiple systems streams following the branch (VOB), a same audio least the top one audio frame (Af) above, between multiple systems streams prior to bonding (VOB), are recorded as the same moving picture at least end 1GOP or more that.