M4A to MP4 Converter • Online & Free • MConverter

How to convert M4A to MP4?

You can convert M4A to MP4 with MConverter in three easy steps:

Choose M4A files from your device
At the top of this page, drag and drop your M4As.
You can also click to select M4A files using your operating system's file picker.
Another method is to press the keyboard shortcut Ctrl+V (⌘+V on Mac) to paste an M4A file you have copied to clipboard.
Converting a folder with M4A files to MP4 is also supported: simply paste or drag and drop it.
Click or tap on MP4 from the list of target formats
Alternatively, you can use the search field to quickly find the format you need, whether it's MP4 or something else.
Download your MP4 files, after MConverter has finished processing them
There's an option to automatically download the converted MP4 files, so you don't have to press the download icon for each MP4.
On desktop platforms, you can download the MP4 files to a different folder by clicking on SAVE TO...
You may see a share icon as well. Use it to directly share the MP4's with other apps.

About the formats

File extension	.m4a
Category	Audio file formats
Developed by	Apple
Mime type	audio/m4a

Format description

M4A files store audio using the AAC codec. M4A stands for MPEG-4 Audio. It is very similar to MP4 with the difference being the lack of a video/subtitle track in the file.

File extension	.mp4
Category	Video file formats
Developed by	MPEG (Moving Picture Experts Group)
Mime type	video/mp4

Format description

MP4 (short for MPEG-4 Part 14) files store multimedia - video, audio and subtitles. Websites frequently use them for displaying videos because the MP4 format is universally supported.
However, newer video formats, such as WebM, produce smaller file sizes with almost no quality loss. Therefore, you can free up storage by converting your videos to WebM.

Common questions about converting M4A to MP4

Will the video be black?

If the M4A has no embedded album cover, then the video will be a just black background.
If your M4A contains album art, the MP4 video will display it throughout the whole duration.

Can the MP4 be uploaded to YouTube without a "Processing abandoned" error?

Yes, your converted videos can be uploaded to YouTube successfully. Still, keep in mind that music copyright laws may have an impact on your uploads.

Can I convert M4A to MP4 in bulk?

Yes, MConverter supports batch converting of multiple M4As to MP4's simultaneously. You can even drag and drop folders containing M4As to convert to MP4.
Pasting M4A files and folders copied in the clipboard also works: use Ctrl+V.

Can I convert an M4A file to MP4, if its size is 2 GB?

Yes, with MConverter Pro you can convert big M4As, up to 2 gigabytes each.
The free version lets you convert files up to 100 MB. If you need to convert M4A files over 100 megabytes, try MConverter Pro. If your files aren’t over 1 GB, then you can use MConverter Plus instead, as it’s cheaper.

Is converting M4As to MP4 safe with MConverter?

Yes, we encrypt your connection using industry standards. Plus, your M4A files are only accessible by you. 4 hours after the conversion completes, they are automatically deleted from MConverter’s servers. You can also delete your M4As and other converted files immediately after finishing the conversion by clicking the bin icon.
Join thousands who have trusted us to convert over 11,820,531 files so far.

How long does it take to convert M4A to MP4?

For most audio files, the wait is usually around a minute. However, MConverter also supports converting larger audio files, meaning that it could take a while (up to over an hour, for example).