A processor encoded with instructions for carrying out a content-reproduction-propriety-determination-notification method, the method comprising:
- recording a plurality of types of content-data items to be recorded onto at least one predetermined recording medium in a first predetermined format by using recording means;
- making a reproduction-propriety determination by determining whether or not the plurality of types of content-data items recorded onto the recording medium, at the recording step, includes at least one content-data item for which reproduction is inhibited for a reproduction device because the reproduction device supports a second predetermined format;
- and
- making a notification according to a predetermined method when it is determined that the content-data item for which reproduction is inhibited is included, at the reproduction-propriety-determination step, the notification indicating details on the determination,
- wherein at the recording step, information about a notification indicating that the content-data item for which reproduction is inhibited is included is written onto the recording medium when the content-data item for which reproduction is inhibited for the reproduction device is recorded onto the recording medium, and
- when the plurality of types of content-data items are distributed and recorded onto a plurality of the recording mediums, the notification step makes a notification which allows for differentiating between the recording medium including the content-data item for which reproduction is inhibited for the reproduction device and the recording medium including the content-data item that can be reproduced by the reproduction device.