Add your VOB file
Drop one or more .vob files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
VOB to WEBM
Converting .vob video to .webm means re-encoding the picture and sound into a different container and codec family, and this page does it entirely in your browser. Free, private, and validated — the file never leaves your browser.
Private for supported formats — processed in your browser
Runs on your deviceConvert supported files
Drop VOB files here
Batch files can each use a different output. Nothing uploads for local conversions.
Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.About converting DVD video object to WebM video
Converting .vob video to .webm means re-encoding the picture and sound into a different container and codec family, and this page does it entirely in your browser. A .vob file is a Video Object from a DVD's VIDEO_TS folder, holding the disc's actual movie data. Each .vob multiplexes MPEG-2 video, audio, subtitle subpictures, and navigation commands, split into pieces of about one gigabyte to satisfy the DVD specification.
A .webm file is an open, royalty-free video container built specifically for the web. It restricts itself to free codecs, VP8, VP9, or AV1 for video with Vorbis or Opus for audio, so any browser can play a .webm without patent licensing concerns. For this route the practical draw is free of patent royalties end to end and vP9 and AV1 deliver excellent compression efficiency — balanced against older iPhones and legacy Safari versions cannot play it, which is worth knowing before you commit a large batch.
Why convert VOB to WEBM?
The practical trigger for this conversion is usually a mismatch: with .vob, files split at roughly 1 GB boundaries and must be rejoined for continuous playback. Switching to .webm buys you free of patent royalties end to end, which is why it is the better fit for serving HTML5 video without codec license fees. Because the conversion runs locally, trying it costs nothing but a few seconds of compute on your own machine.
VOB vs WEBM at a glance
| Aspect | DVD video object (.vob) | WebM video (.webm) |
|---|---|---|
| Format type | Container — quality depends on the codecs and settings inside | Container — quality depends on the codecs and settings inside |
| How it stores data | an MPEG-2 program stream variant extended with navigation packs (PCI/DSI) that DVD players use for menus and seeking | structured as a deliberately restricted subset of Matroska's EBML layout |
| Strongest at | backing up home-movie DVDs before the media degrades | serving HTML5 video without codec license fees |
| Weak spot | files split at roughly 1 GB boundaries and must be rejoined for continuous playback | older iPhones and legacy Safari versions cannot play it |
| Metadata | none inside the VOB itself; titles, chapters, and menu logic live in the accompanying IFO files on the disc | only a minimal set of Matroska tags such as title and language is defined for WebM; the spec deliberately omits attachments and rich tagging |
Pick WEBM as the output
Select .webm in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if WEBM is selectable, the route is real and validated.
Convert on your device
Press Convert. The conversion runs on an FFmpeg engine compiled to WebAssembly, executing entirely inside your browser tab.
Verify and download
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid WEBM file. Outputs keep the original filename with the .webm extension.
VOB to WEBM questions, answered
Will converting VOB to WEBM lose quality?
Both sides are re-encoded, so expect a small generation loss controlled by the quality setting: vob is container-oriented and webm is container-oriented. For visually or audibly transparent results keep quality high; for smaller files lower it and compare.
Is it private to convert VOB files here?
Yes — the .vob file is processed inside your browser tab and never uploaded. The conversion runs on an FFmpeg engine compiled to WebAssembly, executing entirely inside your browser tab. Close the tab and the file is gone from memory.
Where will the WEBM file work?
Chrome, Firefox, and Edge have played WebM for over a decade, and Safari added playback in 2021 starting with version 14.1 on macOS, with iOS following in iOS 15. Beyond browsers the picture thins out quickly, since many televisions, set-top boxes, and editors still expect MP4.
Will the WEBM file be bigger or smaller than my VOB?
It depends on the content: structured as a deliberately restricted subset of Matroska's EBML layout. Convert one representative file first and compare before batch-processing a large set.
What happens to the metadata in my VOB file?
This converter strips container metadata deliberately (the FFmpeg command runs with metadata mapping disabled) so exported files do not leak recording details. In the source, none inside the VOB itself; titles, chapters, and menu logic live in the accompanying IFO files on the disc; none of it is transmitted anywhere because the file never leaves your browser.
Can I convert WEBM back to VOB?
Yes — the reverse route exists as a separate tool. Bear in mind that round-tripping .vob → .webm → .vob is not a perfect undo when any lossy step is involved; keep your original if fidelity matters.