How to Extract Audio from VOB to MP3 or WAV

VOB (Video Object) files are the standard container format used on DVD-Video media, housing multiplexed video, audio, and subtitle streams. Extracting the audio track into a standalone format like MP3 (for smaller file sizes and wide compatibility) or WAV (for uncompressed, high-fidelity sound) makes the content playable on standard audio devices and easy to edit. This guide covers the most efficient and reliable methods to extract audio from VOB files using VLC Media Player, FFmpeg, and Audacity.

Method 1: Using VLC Media Player

VLC Media Player is a versatile, cross-platform tool capable of converting media containers directly.

1. Open VLC Media Player.
2. Click on Media in the top menu bar and select Convert / Save (or press Ctrl + R on Windows / Cmd + Shift + S on macOS).
3. Under the File tab, click Add... and locate your VOB file.
4. Click the Convert / Save button at the bottom.
5. In the Profile drop-down menu, select Audio - MP3.
   • To extract as WAV: Click the wrench icon next to the profile dropdown, set the encapsulation to WAV, go to the Audio codec tab, choose WAV from the codec dropdown, and click Save.
6. Click Browse next to the Destination file field, choose a save folder, and enter a name with the appropriate extension (.mp3 or .wav).
7. Click Start to begin the extraction.

Method 2: Using FFmpeg (Command Line)

FFmpeg is a powerful command-line tool that performs conversions quickly without quality degradation.

To Extract to MP3:

Open your terminal or command prompt and run:

ffmpeg -i input.vob -vn -acodec libmp3lame -q:a 2 output.mp3

• -vn: Disables video recording/extraction.
• -acodec libmp3lame: Uses the standard LAME MP3 encoder.
• -q:a 2: Sets a high variable bitrate (VBR) quality level.

To Extract to Uncompressed WAV:

ffmpeg -i input.vob -vn -acodec pcm_s16le -ar 44100 -ac 2 output.wav

• -acodec pcm_s16le: Encodes to standard 16-bit uncompressed PCM audio.
• -ar 44100: Sets the audio sampling frequency to standard CD quality (44.1 kHz).
• -ac 2: Sets the audio channel count to stereo.

Method 3: Using Audacity (Best for Audio Editing)

Audacity allows you to extract, inspect, trim, and edit the waveform directly before saving.

1. Open Audacity. Ensure the optional FFmpeg library is installed (Preferences > Libraries) so Audacity can read VOB files.
2. Go to File > Open (or drag and drop) and select your VOB file. Audacity will demux and load the audio tracks into the timeline.
3. Perform any necessary edits, such as trimming unwanted sections or normalizing volume levels.
4. Go to File > Export Audio...
5. Select either MP3 Files or WAV (Microsoft) from the format menu.
6. Configure your bitrate or bit-depth settings as desired, set a file name, and click Export.