.M4A 文件扩展名
MPEG-4 Audio
| 开发者 | Apple |
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什么是 M4A 文件？
An M4A file is an audio file that may store various types of audio content, such as songs, podcasts, and audiobooks. It is saved in the MPEG-4 format and encoded with either the Advanced Audio Coding (AAC) codec or the Apple Lossless Audio Codec (ALAC). Various media players, including Microsoft Windows Media Player 2022 (Windows) and Apple Music (macOS) can open M4A files.
更多信息
MPEG-4 is a multimedia container format that supports video, audio, subtitle, and image data encoded in different codecs. MPEG-4 files that store video bear the .mp4 file extension (.MP4 files). However, if the MPEG-4 file only stores audio, it is saved with the .m4a extension, which stands for "MPEG-4 Audio." This name change helped distinguish between MPEG-4 video files and MPEG-4 audio-only files.
You will most likely encounter M4A files when downloading audio content via the Apple iTunes Store. The content, typically songs, is encoded with AAC compression, which significantly reduces the size of each file. In addition, songs that include copyright protection have an .m4p file extension (.M4P files).
如何打开 M4A 文件
You can play M4A files with various audio players, including Microsoft Media Player (Windows), Apple Music (macOS), Adobe Audition (multiplatform), and VideoLAN VLC media player (multiplatform).
如何转换 M4A 文件
Many audio players and editors, including Adobe Audition, Apple GarageBand, and VideoLAN VLC media player, can convert M4A files to other audio formats.
For example, VLC media player can convert M4A audio to the following formats: