MP2 is an extension of compressed MPEG Layer II audio files. This type of file is still the standard format for digital television and radio. However, most users prefer the MP3 format. The MP2 file is compatible with most portable audio players. We emphasize that for certain devices it is necessary to convert MP2 files to MP3 format. Note that MP2 files are not identical to MPEG-2 video files. Typically, an MPEG-2 video file is used as an MPG extension. In some cases, MP2 files are called musicam files, which cannot be considered correct. In the 80s of the last century, specialists developed many versions of MP files. It was then that the developers of the International Standardization Organization Moving Picture Experts Group (MPEG) were engaged in new standards for digital encoding of audio and video data. Part of the initial release of the MP1 files were 3 separate layers of the audio file. In the 90s, they developed the MP2 format. To this day, this format is used for digital television and radio broadcasting. Due to its broad support for MPEG-1, MP2 files can be played, saved, converted and edited by a multitude of multimedia players and audio editors on a wide variety of platforms and operating systems.
3GPP is a multimedia file format that is primarily intended for storing audio and video files, as well as their transfer over 3G networks. This rather sophisticated technology was developed by the consortium Third (3rd) Generation Partnership Project, whose name gave the abbreviated name of this format (3GPP). The developer created this format so that the third generation of mobile phones can use smaller files. Another task is to unify the format of audio and video files for compatibility with various mobile devices. 3GPP files can be played not only on 3G phones, but also on 2G or 4G phones.