The uniqueness of M4A file extensions is that they can be used to save both lossy and lossless compression formats.
Since iTunes widely uses the AAC format, the M4A file extension format is also widely used by the same platform. They compress audio files at the MP3 bitrate with very little data loss. Also, the AAC format is always a lossy compression format. What’s more, M4A files are usually encoded using the lossy compression of the AAC codec, however, they can also be encoded using the lossless ALAC codec. M4A is just a file container commonly used by the ACC codec.īesides, M4A files are part of the MPEG-4 audio system, while AAC is part of the MPEG-2 and MPEG-4 specifications. AAC can reduce the size of audio files without affecting audio quality, although some data will be lost during the compression process. The main difference between AAC and M4A is that the former means audio codec, while the latter is the file extension commonly used for these audio codec files. Then, let’s see the differences between AAC and M4A. They are mainly used in iTunes, iPod as well as other Apple devices, and cannot be widely played on many other popular devices. They can all be converted to MP3 format, and they are all audio formats. There are some similarities between AAC and M4A since they are usually used together. Now, let’s see the details about AAC vs M4A including similarities and differences. M4A can be used with either a lossy compression or a lossless compression codec like ALAC.
This table shows the main information about AAC vs M4A.
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Another benefit of M4A files is that it does not carry any Digital Rights Management (DRM) protection related to other files, which means they are less restricted.Īlso see: What Is M4A? How to Open It & How to Convert It? AAC VS M4A This means that they can be decoded back to the original quality when compressed. The main advantage of M4A is that files are compressed but lossless.
Since 2007, music purchased through the iTunes store has been in the M4A format, so it has more than 15 billion files worldwide. M4A can be used to store different types of audio content, such as songs and audiobooks. It is not an official MPEG-4 file, so it cannot support video. What is M4A? M4A file is an audio file developed and promoted by Apple.
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