Why Extract Audio from DVD Files?
VOB files are the video containers found on DVDs, stored in the VIDEO_TS folder. They contain MPEG-2 video along with audio tracks, subtitles, and menu data. When you only need the audio-dialogue, music, or sound effects-extracting it as OGG Vorbis gives you a compact, high-quality file that works with open-source software everywhere.
OGG Vorbis is a completely royalty-free audio format maintained by the Xiph.Org Foundation. Unlike MP3, which historically had licensing issues, OGG has always been free to use. In our testing, OGG at equivalent bitrates produces audio quality comparable to or better than MP3, with smaller file sizes.
How to Convert VOB to OGG
- Upload your VOB file - Drag and drop or browse to select the file from your DVD rip
- Choose OGG as output - Select OGG Vorbis for open-source compatible audio
- Download your audio - Get the extracted audio track ready for any media player
The conversion runs entirely in your browser. No software installation, no account required, and your files remain private.
VOB vs OGG: Technical Comparison
Understanding these formats helps you know what to expect from the conversion:
| Feature | VOB | OGG |
|---|---|---|
| Type | Container (video + audio) | Audio only |
| Codec | MPEG-2 video, AC3/LPCM audio | Vorbis (lossy compression) |
| Typical size | 1GB+ per hour of video | 50-100MB per hour of audio |
| Licensing | Proprietary (DVD-Video spec) | Completely royalty-free |
| Player support | Requires DVD playback software | Works in most modern players |
DVD audio is typically encoded as Dolby AC3 (AC-3/Dolby Digital) at 448 kbps or uncompressed LPCM. When converting to OGG, the audio gets re-encoded using Vorbis compression, typically producing files around 10-20% the size of the original audio stream.
When VOB to OGG Makes Sense
Linux and Open-Source Users
OGG is native to the Linux ecosystem. Players like VLC, Audacious, and Rhythmbox handle OGG without any additional codecs. If you primarily use open-source software, OGG is the natural choice for audio.
Archiving DVD Soundtracks
Extract the audio from concert DVDs, film soundtracks, or audio programs. OGG gives you a portable audio file without needing the full DVD data. A 4GB DVD chapter might become a 50MB OGG file containing just the audio.
Podcast and Streaming Platforms
Some platforms prefer OGG for its open licensing. If you need to extract speech or music from DVD content for a podcast, OGG avoids potential licensing concerns that other formats carry.
Game Development
Many game engines use OGG as their default audio format due to its royalty-free status. Extracting audio from DVDs as OGG makes integration straightforward.
What About Quality?
DVD audio is typically high quality-either Dolby Digital at 448 kbps or uncompressed PCM. When converting to OGG Vorbis:
- Quality setting ~6-8 - Produces roughly 192-256 kbps, transparent quality for most listeners
- Quality setting ~4-5 - Around 128-160 kbps, smaller files with minimal audible difference
- Quality setting 10 - Maximum quality, larger files approaching 500 kbps
Our converter uses a quality level that balances file size with audio fidelity. For most DVD audio extraction, the result is indistinguishable from the original to casual listeners.
Alternatives to Consider
OGG is excellent for open-source workflows, but other formats might suit specific needs better:
- VOB to MP3 - Maximum compatibility across all devices and platforms
- VOB to WAV - Uncompressed audio for editing or professional work
- VOB to FLAC - Lossless compression if storage is not a concern
For general use where open-source compatibility is not critical, MP3 from VOB files offers the widest device support.
Works in Your Browser
Convert VOB to OGG on any device with a modern browser:
- Windows, Mac, Linux, Chrome OS
- Chrome, Firefox, Safari, Edge
- Tablets and smartphones (for smaller VOB files)
No plugins needed. The conversion happens locally, so large files may take longer depending on your device's processing power.