M4A to MP4 converter

Convert an M4A to MP4 in four steps

1. Choose the M4A. On an iPhone, open Voice Memos, tap the recording, tap the three dots, choose Save to Files, then pick it here; or try the short sample memo.
2. Add a photo or cover image, or keep a color background.
3. Add a title, the date or a progress bar if you like, and pick landscape, square or vertical.
4. Press Make MP4 and download the video.

Why convert a voice memo to a video

Voice Memos, GarageBand on iPhone and many Android recorders save M4A files. They play anywhere, but YouTube, Instagram, TikTok and some school and work platforms only take video uploads, and a plain audio file shows up as an attachment rather than something people press play on. Adding a picture turns the memo into a video: a lecture recording with the slide title, a song idea with your cover art, a message for a relative with a family photo. The square and vertical shapes suit Instagram and Stories; landscape suits YouTube.

What happens to the sound

An M4A from Voice Memos is AAC audio, the same codec an MP4 video uses, so nothing is lost in format terms. The tool still decodes and re-encodes it once at 192 kbps and 48 kHz, because many voice memos are mono or use sample rates that video platforms prefer to receive as standard stereo 48 kHz. Speech sounds the same; the file is about the size of the original plus a small picture track. If the memo has a long silence at the start, trim it first with the audio trimmer; if it has pauses you want gone, try the silence remover.

Phones, long recordings and limits

The tool runs in Safari and Chrome on phones as well as on computers, but a phone has less memory and a slower processor. A still picture keeps the work light: one frame per second, with the audio read in a stream, so a one-hour class recording is practical; on our laptop a 60-minute file took about 24 seconds. The animated waveform is limited to recordings of 10 minutes. Safari and phone browsers have not been tested by us yet, so if your browser cannot encode MP4 video, the page will say so; try a computer with Chrome or Edge.

Privacy for personal recordings

Voice memos are often personal: an interview, a family message, a meeting. The recording and the photo are read and encoded inside this browser tab and are never sent to AudioClover or to any server, and the page works offline after your first visit.