How to Convert M4A to OGG

You recorded something on your iPhone or exported a track from GarageBand, and now it's going into a game, a Linux app or an open-source project that wants OGG. Here's the quick conversion.

Why OGG Vorbis?

• Royalty-free: no licensing questions for games and open-source software.
• Game engines: Godot, Unity and others handle OGG Vorbis well, especially for music that loops.
• Linux: supported out of the box by nearly every player.
• Good quality at modest sizes: comparable to AAC and MP3.

How to convert M4A to OGG with ZapMorph

1. Open the converter

Go to the M4A to OGG converter.

2. Add files and choose the quality

Drop in .m4a or .aac files and pick 96 kbps (voice), 160 kbps (recommended) or 256 kbps (best).

3. Convert and download

Click Convert to OGG.

Tip

If you have the original project in GarageBand, export it as WAV or AIFF and convert that with WAV to OGG (or the audio converter for AIFF). One compression step sounds better than two.

Tips for game audio

• Music and ambience: 160 kbps is plenty. Players won't hear the difference, and download size matters.
• Short sound effects: many engines prefer WAV for tiny clips because it decodes instantly. Keep OGG for longer sounds.
• Looping music: trim silence at the start and end before converting, so loops are seamless.
• Consistent volume: normalise all tracks in an editor first, so nothing jumps out.

Getting M4A off an iPhone

• Voice Memos: tap a recording → ⋯ → Save to Files, or share it to your Mac with AirDrop.
• GarageBand for iOS: Share → Song → choose AAC (M4A).

Troubleshooting

"The file isn't supported." Protected iTunes Store purchases from before 2009 (.m4p) are DRM-locked and can't be converted.

Output sounds slightly different. Converting from one compressed format to another adds a little loss. Starting from WAV avoids it.

Summary

The M4A to OGG converter takes Apple-format audio into the open OGG format in a couple of clicks.