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MP4 to OGG Converter — Free, Online, No Upload

Pull the audio from any MP4 as an open, patent-free OGG file — perfect for game assets and Linux workflows.

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How to convert MP4 to OGG online

  1. 1

    Drop your MP4 file

    Drag your MPEG-4 Part 14 file onto the box above, or click it to pick a file.

  2. 2

    Wait a few seconds

    Conversion starts on its own and runs on your device, not on a server.

  3. 3

    Download your OGG

    Click Download to save the Ogg Vorbis file.

MP4 vs OGG: format overview

MP4

MPEG-4 Part 14

Moving Picture Experts Group · 2001

Compression
lossy
Transparency
No
  • ✓ Universal compatibility across all platforms
  • ✓ Excellent compression with H.264/H.265
  • ✗ H.264 has royalty implications
OGG

Ogg Vorbis

Xiph.Org Foundation · 2000

Compression
lossy
Transparency
No
  • ✓ Royalty-free — no licensing fees
  • ✓ Better quality than MP3 at same bitrate

MP4 magic bytes: 00 00 00 xx 66 74 79 70

OGG magic bytes: 4F 67 67 53

Why convert MP4 to OGG?

You have a video file — a game cutscene, a tutorial recording, a YouTube download — and you need the audio in a format your game engine or Linux app can actually use. MP4 containers carry AAC audio by default, which is patented and can't be used royalty-free in certain open-source contexts. OGG Vorbis is the patent-free alternative that game engines and Linux software prefer.

This converter extracts the audio track from your MP4 and re-encodes it as OGG Vorbis. Godot, Unity, and Unreal Engine all support OGG natively — it's the recommended audio format for game sound assets precisely because of its royalty-free status. Linux media players (Rhythmbox, Clementine, Amarok) handle OGG seamlessly, and web browsers including Chrome, Firefox, and Edge play OGG in HTML5 audio elements without plugins.

Because you're re-encoding from a lossy source (AAC) to another lossy format (OGG Vorbis), there is a small generation loss — the converter decodes the AAC and re-encodes to OGG. At OGG quality level q5 (around 160 kbps), the output sounds excellent for voice and music. Safari does not support OGG natively, so for web use, provide a fallback AAC source.

Quality & file size: MP4 to OGG

Typical sizes: MP4 100–300 MB (1 minute 1080p); OGG 2–5 MB (3-minute song).

OGG output uses Vorbis quality level 5, about 160 kbps.

Re-encoding one lossy format into another adds a second round of compression.

Frequently asked questions

Why convert MP4 audio to OGG instead of MP3?
OGG Vorbis is patent-free and open-source, making it the preferred format for open-source games (Godot, open-source Unity projects) and Linux applications where patent encumbrance matters.
Can I use OGG audio in HTML5 web pages?
Yes — OGG Vorbis is supported in all major browsers except Safari (which prefers AAC). For maximum browser compatibility, provide both OGG and AAC versions.

Your MP4 file never leaves this tab — FormatDrop has no endpoint that receives file data. How it works