如何在Windows / Mac上将MP4转换为M4A（免费和在线）

MP4是一种广泛使用的文件格式，可与多个电台和视频播放器一起使用。 MP4文件可以存储视频，音频和其他内容。现在，许多人都喜欢听MP4视频的音轨。为了保持质量，将MP4转换为M4A是个好主意。 M4A代表MPEG 4音频。大多数程序都可以播放M4A文件，包括iTunes，QuickTime，Windows Media Player等。

You might wonder how to extract the audio from MP4 file. There are many ways to turn a MP4 file into a M4A file. Check out this post to figure out how to convert MP4 to M4A for future listening on your mobile devices.

第1部分。最佳的免费在线方法，将MP4转换为M4A而没有质量损失

FVC Free Online Video Converter is a free MP4 to M4A file converter that can convert the MP4 format to not only M4A but others like MP3, WAV, M4R, WMA, AIFF, AC3, etc. It allows you to make a batch conversion so that you can convert multiple MP4 videos to M4A instantly. Also, this free online tool also allows you to convert the MP4 video to MOV, AVI, FLV, and other video formats.

Step 1. Open https://www.free-videoconverter.net/free-online-video-converter/ on your browser. Click the Add Files to Convert button and then you need to download and install its launcher.

Step 2. Upload the MP4 video you want to convert, and then click Open to move on.

Step 3. After uploading your video files to this application, click the Audio icon and choose the M4A format as the output format.

Step 4. In the end, click the Convert button in the bottom right corner. Wait for a while, and you’ll get your M4A audio from the MP4 file.

第2部分。如何使用免费的音频转换器将MP4转换为M4A

FVC Free Audio Converter 是一款免费软件，可让您毫不费力地将 MP4 文件转换为 M4A。它能够将任何视频或音频文件更改为 M4A、MP3、WAV 等。您可以在 Windows PC 上下载并安装它以开始转换。

Step 1. Launch this audio converter on your computer. Click the Add File(s) button to upload the MP4 files to this program.

Step 2. Find the Output formats option and choose the M4A as the output format from its drop-down list.

Step 3. Click the Convert button to start turning MP4 files into M4A.

Apart from M4A, you can use it to convert MP4 to MP3, AAC, or other audio formats.

第3部分。如何使用iTunes将MP4转换为M4A

要使用Windows或Mac版iTunes将MP4转换为M4A，您需要更改iTunes导入设置，然后使用“转换”菜单选项制作M4A副本。

Step 1. Open iTunes on your Windows PC or Mac.

Step 2. Choose Edit, then click on Preferences in the menu bar. Then, go to the General tab, and click Import Settings.

Step 3. Find and click the menu next to Import Using, and then choose the encoding format that you want to convert the video to. Then, click OK.

Step 4. Select the songs in your library that you want to convert. After that, choose File, then click on Create New Version, then create M4A version.

转换后的音频文件将显示在库中原始文件旁边。

第4部分。MP4到M4A转换的常见问题解答

结论

以上三种方式可以帮助您轻松地将MP4免费转换为M4A。如果您希望在线进行转换，那么FVC Free Online Video Converter应该是一个不错的选择。如果您的MP4文件很大，则FVC Free Audio Converter或iTunes将更可靠地将MP4文件转换为M4A。