Information processing apparatus and method and program

An information processing method for an information processing apparatus for processing material data forming content and content data formed by metadata to be attached to said material data, said apparatus including a computer, a processor, and a memory, comprising the steps of:

• executing destructive editing in which data is actually updated for said material data;
• identifying metadata that is affected by the destructive editing of said material data by said material data destructive editing step;
• updating said metadata identified by said metadata identifying step;
• destructively editing said material data;
• updating identification information to be attached to said material data;
• identifying metadata having identification information for identifying metadata to be destructively edited;
• and
• said metadata updating step updating said identification information for identifying said material data to be destructively edited, updating realtime metadata requiring realtime nature in reproducing said realtime metadata at the time of reproducing said material data, said realtime metadata to be added to said material data, and updating nonrealtime metadata requiring no realtime nature in reproduction of said nonrealtime metadata at the time of reproduction of said material data, said nonrealtime metadata to be added to said material data.

A computer-readable medium storing a program that when executed by a computer including a processor and a memory, processes material data forming content and content data formed by metadata added to said material data, said program comprising the steps of:

• executing destructive editing in which data is actually updated for said material data;
• identifying metadata that is affected by the destructive editing of said material data by said material data destructive editing step;
• updating said metadata identified by said metadata identifying step;
• destructively editing said material data;
• updating identification information to be attached to said material data;
• identifying metadata having identification information for identifying metadata to be destructively edited;
• and
• said metadata updating step updating said identification information for identifying said material data to be destructively edited, updating realtime metadata requiring realtime nature in reproducing said realtime metadata at the time of reproducing said material data, said realtime metadata to be added to said material data, and updating nonrealtime metadata requiring no realtime nature in reproduction of said nonrealtime metadata at the time of reproduction of said material data, said nonrealtime metadata to be added to said material data.