Information signal edition apparatus, information signal edition method, and information edition program

An information signal editing device for editing stream data constituted by video data and audio data, comprising:

• a separation means for separating the audio data and the video data from the stream data;
• a time information obtaining means for obtaining time information from the output data from the separation means;
• an audio decoding means for decoding the audio data separated by the separation means;
• a time matching means for performing time matching by adding or deleting part of data to/from the output data from the audio decoding means;
• an audio encoding means for compressing the output data from the time matching means in a prescribed format;
• and
• a multiplexing means for multiplexing the video data separated by the separation means and the output from the audio encoding means.

An information signal editing method comprising:

• separating audio data and video data from stream data constituted by the video data and the audio data, and obtaining time information from the separated audio data and video data;
• decoding the separated audio data, performing time matching on the basis of the time axis information, and encoding the time-matched audio data;
• and
• multiplexing the separated video data and the encoded audio data.

An information signal editing program for making a computer perform an information signal editing process of editing an information signal that includes a first information file constituted by plural signals with different size of capacities, which signals are independent and relevant from/to each other;

• and a first management information for managing the first information file, comprising:
• a first program for making the computer perform a recording process of recording either the first information file or the first management information file in a memory;
• and
• a second program for making the computer perform a management information file storage process of storing a second management information file for managing either the first information file or the first information file recorded in the memory, in the memory according to a proscribed editing process.

An information signal editing program for making a computer perform an information signal editing process of editing stream data constituted by video data and audio data, comprising:

• a first program for making the computer perform a separation process of separating the audio data and the video data from the stream data;
• a second program for making the computer perform a time information obtaining process of obtaining time information from the separated audio data and video data;
• a third program for making the computer perform an audio data process for decoding the separated audio data, performing time matching on the basis of the time axis information, and encoding the time-matched audio data;
• and
• a fourth program for making the computer perform a multiplexing process of multiplexing the separated video data and the encoded audio data.