Step 1: Upload your VOB files using the button above or by drag and drop.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Download your converted Opus files.
VOB to Opus Conversion FAQ
How do I extract audio from a VOB video as Opus?
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Upload your VOB video. PDF.to pulls the audio track out, encodes it to Opus, and gives you a Opus-only download. The video stream is discarded.
Will the audio in the Opus match the original VOB quality?
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If the source audio is already in a codec compatible with Opus, we stream-copy without re-encoding — bit-identical to the original. Otherwise we re-encode at 192 kbps by default for near-transparent quality.
What bitrate is the Opus output?
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192 kbps by default. The options panel exposes 96, 128, 192, 256, and 320 kbps — pick higher for music, lower for voice.
Can I extract only part of the VOB as Opus?
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Yes. Use the trim controls on the upload preview to set start and end times before extracting, and only that range becomes Opus.
Does the converter handle VOB files with multiple audio tracks?
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Yes. If your VOB has several language or commentary tracks, you can pick which one(s) to extract as Opus in the options panel.
Will the Opus output have the same sample rate as the source?
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Yes by default. We do not resample unless you explicitly request it. 48 kHz is preserved from movie sources, 44.1 kHz from music sources.
Is the VOB to Opus extraction free?
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Yes for files under 100 MB. PRO supports larger VOB files (5 GB) and parallel batch extraction.
Does PDF.to read or store my VOB content?
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No. The VOB video and the Opus audio output are deleted within an hour. Conversion runs in an isolated worker.
Can I batch-extract audio from multiple VOB files?
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Yes — drop a folder of VOB videos and you will get a ZIP of Opus files back, one per source video.
Will the Opus preserve tags and metadata?
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Title, artist, and album tags are populated from the VOB container metadata when available. You can edit them after extraction with our audio-tag tool.
Does the converter work on streaming video URLs?
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No — PDF.to converts files you upload, not third-party stream URLs. Download the VOB legally first, then upload it for Opus extraction.
Why is the Opus file much smaller than the VOB video?
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Because the video stream (typically 90%+ of file size) is discarded. Only the audio track ends up in the Opus, which is why it can drop from gigabytes to a few megabytes.