M4A to MP4

M4A files, such as iPhone voice memos and music from iTunes, are AAC audio in an MPEG-4 container. Some apps and websites only accept files ending in .mp4, and video platforms like YouTube need a picture. This converter handles both.

Choose Audio only for a small MP4 with the same sound, or Add a black picture to create a video you can upload to YouTube, Facebook or Instagram.

How to convert M4A to MP4

1. Upload your M4A file.
2. Choose Audio only or Add a black picture.
3. Click Convert and download your MP4.

M4A to MP4 features

• AAC audio is copied without re-encoding, so the sound quality is unchanged.
• Optional black video track for YouTube and social uploads.
• Works with iPhone voice memos and iTunes audio without copy protection.

Frequently asked questions

Is the audio quality reduced?

No. AAC audio is copied into the MP4 exactly as it is.

Why add a black picture?

Video platforms reject files without a video track. A black picture turns your audio into a valid video while keeping the file small.

Can I convert protected iTunes songs?

No. Files with copy protection (DRM) cannot be converted.

Can I convert the MP4 back to audio?

Yes, use our MP4 to MP3 converter.

Privacy, limits and file safety

Your files are processed on our own server, are never shared with anyone and are deleted automatically 60 minutes after processing. You can upload files up to 500 MB and 60 minutes long. No sign-up, no watermark and no software to install: it works in any modern browser on Windows, Mac, Android and iPhone.

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