METHOD FOR LOCAL PLAYBACK ON MP4 FILE FORMAT FOR SUPPORTING MIDI DATA BY REDUCING SIZE OF SOUND SOURCE

摘要

PURPOSE: A method for local playback on an MP4(MPEG layer 4) file format for supporting the MIDI(Musical Instrument Digital Interface) data is provided to minimize overhead for supporting the MIDI on the MP4 file or similar file formats. CONSTITUTION: Entire MP4 file is recognized as one data and is transferred to a terminal from a server(S100). A file format analyzer of the terminal extracts the MIDI data by interpreting information for the previously known MP4 file format(S110). The extracted MIDI data is transferred to a MIDI decoder, and the MIDI is played simultaneously with a moving image played through a VOD(Video On Demand) decoder(S120).