Extract audio from MPG video and save as AC3 Dolby Digital. Supports 5.1 surround sound. Free.
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Supports: MPG, MPEG
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Need help?How to Convert MPG to AC3
- Upload Your MPG File — Click "Choose Files" or drag and drop your MPG or MPEG video file. Both extensions are accepted.
- Set Audio Quality — Under File Compression, choose from: Quality Preset (Highest through Lowest), File Size Percentage (1-100% slider), Specific File Size (MB/KB), Custom Bitrate (enter any value in kbps), Constant Bitrate (32-384 kbps presets), or Variable Bitrate.
- Adjust Audio Settings (Optional) — Under Audio Codec, the default is AC3 (Dolby Digital). Set Audio Channel to Original, Mono, or Stereo. Change Audio Sample Rate from 8000 Hz through 48000 Hz.
- Trim (Optional) — Under Trim, set a Start Time and Duration in seconds or HH:MM:SS.sss format.
- Convert & Download — Click "Convert" and download your AC3 file.
Why Convert MPG to AC3?
AC3 (Audio Coding 3), also known as Dolby Digital, is the standard audio format for DVDs, Blu-ray discs, and home theater systems. It supports up to 5.1 surround sound. Converting MPG to AC3 extracts the audio track as Dolby Digital for preparing audio tracks for DVD or Blu-ray authoring, extracting surround sound audio from MPEG recordings, creating Dolby Digital audio files for home theater systems, and integrating audio into multimedia projects requiring AC3 format.
AC3 (Dolby Digital) Overview
| Feature | AC3 |
|---|---|
| Full name | Audio Coding 3 (Dolby Digital) |
| Developer | Dolby Laboratories |
| Channels | Up to 5.1 surround |
| Bitrate range | 64-640 kbps |
| Standard for | DVD, Blu-ray, HDTV |
| Best for | Home theater, surround sound |
AC3 Bitrate Guide
| Bitrate | Channels | Best For |
|---|---|---|
| 192 kbps | Stereo | Standard DVD audio |
| 384 kbps | 5.1 surround | DVD surround sound |
| 448 kbps | 5.1 surround | Blu-ray standard |
| 640 kbps | 5.1 surround | Maximum quality |
What is AC3 / Dolby Digital?
AC3 is Dolby's multi-channel audio compression format. It is the standard audio codec for DVD-Video and Blu-ray discs, supporting stereo and 5.1 surround sound configurations.
What bitrate should I use?
For stereo, 192 kbps is standard. For 5.1 surround, use 384-448 kbps (DVD standard) or 640 kbps (maximum quality).
Can I trim the audio during conversion?
Yes. Under Trim, switch to "Trim" and enter a Start Time and Duration.
Does this preserve surround sound?
If the MPG source contains multi-channel audio, AC3 can preserve up to 5.1 surround. Set Audio Channel to Original to maintain the source channel layout.
What players support AC3?
VLC, Windows Media Player (with codecs), all DVD/Blu-ray players, and home theater receivers support AC3 natively.