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MP4 to AC3

Pull space-saving AC3 tracks with rich surround sound from any MP4—100 % free and watermark-free.

or drag & drop up to 100 MB here

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How to convert MP4 to AC3 online

1. Upload your MP4

1. Upload your MP4

Click “Choose files” or drag your video onto the page. HD clips up to 100 MB are transferred over encrypted HTTPS.

2. Pick AC3 settings

2. Pick AC3 settings

AC3 is pre-selected. Open Advanced settings to choose a bitrate (64–640 kbps) or keep source quality, then press “Convert”.

3. Download the AC3

3. Download the AC3

Conversion takes seconds. Save your .ac3 file—ready for home-cinema receivers, media players, or car stereos.

FAQ

Why convert MP4 to AC3?

AC3 files offer multi-channel surround sound while staying smaller than WAV and often smaller than MP3 at comparable quality. They play natively on many TVs, receivers, and Windows PCs.

Can I choose a specific bitrate like 192 kbps?

Yes. After uploading, open Advanced settings and select any bitrate from 64Kbps to 640 kbps, or leave it on Auto for balanced size and quality.

Will converting lower the audio quality?

Selecting a high bitrate (192 kbps or above) keeps the sound very close to the original. Lower bitrates create smaller files but may reduce fidelity.

Does AC3 work on macOS, iOS, or Android?

Most third-party players—VLC, foobar2000, Kodi—on macOS, Linux, and Android open AC3 without issues. On iPhone/iPad you may need a compatible media app.

Is any DRM added to the exported AC3?

No. The converter produces standard, DRM-free AC3 files that you can edit, copy, or share without restrictions.

What is the maximum upload size?

Videos up to 100 MB are supported. Files larger than 100 MB cannot be processed.

How secure are my files?

Files travel over encrypted HTTPS, are processed in volatile memory, and are automatically deleted from our servers minutes after conversion.

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