Uwarp

The MP4 keeps the same audio. It does not add a picture. Conversion stays in this browser.

Help Us Improve

—

(—)

Convert an M4A file to MP4

Convert an M4A file to MP4 in your browser. No signup, the audio is copied, and the file stays on your device.

What is an M4A to MP4 converter?

An M4A to MP4 converter takes an M4A audio file and saves it as an MP4. An M4A file is audio-only MPEG-4, the format music apps use for AAC songs, and people also label that file MP4A. MP4 is the container most often used for video, and it can hold the same audio without a picture. This page does that in the browser: you upload an M4A and download an MP4 of that audio.

M4A to MP4 converter features

Save an M4A audio file as an MP4.

  • M4A to MP4

    Upload a .m4a file and download an .mp4 with the same audio.

  • MP4A files

    A .mp4a file is the same MPEG-4 audio. Drop it here to save it as MP4.

  • Audio copied

    AAC audio is copied into the MP4 when the file allows it, so the sound is not re-encoded.

  • Browser-side conversion

    The file stays on your device. No account is required to convert M4A to MP4.

How to convert M4A to MP4

Three steps from an M4A audio file to an MP4.

  1. Add the M4A

    Drop a .m4a or .mp4a file.

  2. Convert to MP4

    Click Convert to MP4. The audio is packed into an MP4 container.

  3. Download the file

    Save the .mp4 and open it in a player that accepts MP4 audio.

Tips for M4A to MP4

Get a usable MP4 from an M4A file.
  • 01

    Expect audio, not a video

    The MP4 has no picture track. Use it when a form or app asks for MP4 and you only have the song.

  • 02

    Keep the original M4A

    Music apps often prefer the .m4a file. Keep it if you still want that extension.

  • 03

    MP4A is the same audio

    If the download is named .mp4a, it is still M4A audio. This page can save it as .mp4.

  • 04

    Need MP3 instead

    Use the M4A to MP3 converter when the next app asks for MP3 rather than MP4.

Great for

Reasons to save M4A as MP4.

  • Uploads that ask for MP4

    Turn an M4A song into an MP4 when the form will not take .m4a.

  • Players that skip M4A

    Open the same audio in a player that lists MP4 and not M4A.

  • Keeping the AAC audio

    The sound is copied when the file is already AAC, so you are not forced through MP3.

  • A private conversion

    Build the MP4 on your device when you do not want to upload the recording.

Why use this converter

A focused M4A to MP4 path in the browser.

  • Free to use

    Convert M4A to MP4 with no signup.

  • Private by default

    Reading the M4A and writing the MP4 stay in the browser.

  • No install

    Open the page, add the file, and download.

  • Same audio

    The MP4 carries the M4A soundtrack instead of a new recording.

Technical details

How this M4A to MP4 conversion works.
Input
An .m4a or .mp4a audio file up to 200 MB.
Output
An .mp4 file with the audio track and no video track. AAC is copied when the source allows it.
Fallback
If the audio cannot be copied, it is encoded as AAC at 192 kbps inside the MP4.
Where it runs
Conversion runs locally in the browser with FFmpeg. The file is not uploaded.

Sources & References

References for the M4A audio file and the MP4 container this converter writes.
  • “Audio-only MPEG-4 files generally have a .m4a (MPEG-4 Audio) extension.”
    — Wikipedia — MP4 file format

    M4A: This tool reads that audio file and packs the soundtrack into an MP4. en.wikipedia.org/wiki/MPEG-4_Part_14

  • “MP4 (formally MPEG-4 Part 14) is a digital multimedia container format most commonly used to store video and audio, but it can also be used to store other data such as subtitles and still images.”
    — Wikipedia — MP4 file format

    MP4: The download is that container with the M4A audio inside and no picture track. en.wikipedia.org/wiki/MPEG-4_Part_14

Frequently Asked Questions

Quick answers about this tool—open a question to read more.