Is a multimedia format container which is widely used for packaging video and audio streams, posters, subtitles and metadata. Exists support for streaming. Metadata is sent with the file, which contains all information necessary for broadcasting. Exists possibility to pack multiple streams simultaneously and MPEG-4 standard, which belongs to the format, supports a reasonable amount of data formats.
is the most common format for storing audio. Almost any player on any platform can open mp3 files. The audio is compressed with loss of quality, but the loss is negligible for the typical user, and the file size is usually less than that of the original files.