The compact size of these files led to their widespread use in computers, mobile phone ringtones, webpage authoring, and musical greeting cards.Īudio-only MPEG-4 files generally have a. The device interprets the commands in the MIDI file and reproduces the music-related events. M4A stands for MPEG 4 Audio and is a filename extension used to represent audio files.Ī MIDI file does not contain any music but instructions about music events and objects. However, it can also be used to store other data such as subtitles and still images. MPEG-4 Part 14 or MP4 is a digital multimedia container format most commonly used to store video and audio. International Organization for Standardization
Musical Instrument Digital Interface (MIDI)
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