MKV to AC3 Converter
Extract audio from MKV video files and convert to AC3 (Dolby Digital) format for home theater systems and DVD/Blu-ray authoring. Supports multi-channel surround sound. Professional-quality audio conversion powered by FFmpeg, all processing happens securely in your browser.
Recommended Settings
For Surround Sound
- •448-640 kbps with 5.1 channels
- •Perfect for home theater systems
- •Preserves multi-channel audio
For Stereo Content
- •384 kbps with stereo recommended
- •Excellent quality for 2-channel audio
- •Compatible with all devices
Pro Tips
- •AC3 is the standard for DVD and Blu-ray audio
- •5.1 surround requires source to have multi-channel audio
- •384 kbps provides excellent quality for most uses
Most Popular
Most users choose 384 kbps stereo or 448 kbps 5.1 surround for home theater
When to Use This Tool
Extract audio from MKV videos for use in home theater setups with surround sound support.
Recommended: 384-640 kbps, 5.1 channels
AC3 is the standard audio format for DVD and Blu-ray discs with multi-channel support.
Recommended: 448 kbps, 5.1 channels
AC3 is widely supported on older devices and media players.
Recommended: 384 kbps, stereo
How It Works
Upload your MKV video file
Select desired bitrate and channel configuration
FFmpeg extracts and encodes AC3 audio
Download your AC3 audio file
100% Private
Files never leave your device. All processing happens locally in your browser.
Lightning Fast
Powered by FFmpeg.wasm (WebAssembly) for optimal performance on modern browsers.
Open Source
Built with verified, open-source libraries. Fully transparent.
Frequently Asked Questions
What is AC3 format?
AC3 (Dolby Digital) is a surround sound audio format commonly used in DVDs, Blu-rays, and home theater systems. It supports multi-channel audio including 5.1 surround sound.
What bitrate should I use?
384 kbps is standard for stereo and good quality. 448 kbps is recommended for 5.1 surround sound. 640 kbps provides maximum quality for multi-channel audio.
What are the channel options?
Mono (1) for voice-only content, Stereo (2) for standard audio, and 5.1 (6) for surround sound home theater audio. The source must contain the appropriate channels.
Will this preserve surround sound?
Yes, if your source MKV has 5.1 audio and you select 6 channels, the surround sound will be preserved in the AC3 output.
What devices support AC3?
AC3 is supported on most home theater receivers, DVD/Blu-ray players, game consoles, and many media players. It's the standard for disc-based media.