Add your M4V file
Drop one or more .m4v 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.
M4V to VOB
Pulling the soundtrack out of a .m4v video into .vob audio keeps what you can hear and drops the picture entirely. 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 M4V 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 MPEG-4 video to DVD video object
Pulling the soundtrack out of a .m4v video into .vob audio keeps what you can hear and drops the picture entirely. An .m4v file is Apple's flavor of the MPEG-4 container, used by iTunes for movies, TV episodes, and music videos. Structurally it is almost identical to .mp4, but the .m4v extension signaled iTunes-specific features such as chapter markers and, on purchased content, FairPlay copy protection.
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. For this route the practical draw is contains the disc's content exactly as authored, with all tracks intact and mPEG-2 decodes in any desktop player without licensing hurdles — balanced against files split at roughly 1 GB boundaries and must be rejoined for continuous playback, which is worth knowing before you commit a large batch.
Why convert M4V to VOB?
The usual reason to take .vob audio out of a .m4v file is that only the sound matters — a talk, interview, song, or podcast segment. Keeping the video stream would waste storage, and a dedicated audio file is easier to trim, tag, and play. On the source side, fairPlay-protected files play only in Apple apps on authorized devices, and no converter can open them; on the target side, the payoff is contains the disc's content exactly as authored, with all tracks intact, which is exactly what you want for backing up home-movie DVDs before the media degrades.
M4V vs VOB at a glance
| Aspect | MPEG-4 video (.m4v) | DVD video object (.vob) |
|---|---|---|
| Format type | Container — quality depends on the codecs and settings inside | Container — quality depends on the codecs and settings inside |
| How it stores data | identical ISO base media layout to MP4, distinguished only by branding atoms and the extension | an MPEG-2 program stream variant extended with navigation packs (PCI/DSI) that DVD players use for menus and seeking |
| Strongest at | playing back iTunes-era video libraries | backing up home-movie DVDs before the media degrades |
| Weak spot | fairPlay-protected files play only in Apple apps on authorized devices, and no converter can open them | files split at roughly 1 GB boundaries and must be rejoined for continuous playback |
| Metadata | full iTunes atom metadata: title, show, season, episode, artwork, chapters, and content ratings | none inside the VOB itself; titles, chapters, and menu logic live in the accompanying IFO files on the disc |
Pick VOB as the output
Select .vob in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if VOB is selectable, the route is real and validated.
Convert on your device
Press Convert. A WebAssembly FFmpeg build demuxes the audio track and re-encodes it locally; the video stream is simply discarded.
Verify and download
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid VOB file. Outputs keep the original filename with the .vob extension.
M4V to VOB questions, answered
Will converting M4V to VOB lose quality?
Since m4v is container-oriented and vob is container-oriented, the conversion preserves the source content exactly as stored; no additional compression pass is applied beyond what .vob itself requires.
Is it private to convert M4V files here?
Yes — the .m4v file is processed inside your browser tab and never uploaded. A WebAssembly FFmpeg build demuxes the audio track and re-encodes it locally; the video stream is simply discarded. Close the tab and the file is gone from memory.
Where will the VOB file work?
VLC and most desktop players open .vob files directly, but phones, TVs, and browsers do not, since the format assumes a DVD player's navigation logic. Home-burned discs convert freely to MP4, while retail discs carry CSS encryption.
Will the VOB file be bigger or smaller than my M4V?
Much smaller — the video stream is usually 80–95% of a .m4v file's weight, and it is discarded entirely. The remaining audio is re-encoded at the bitrate implied by your quality setting.
What happens to the metadata in my M4V 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, full iTunes atom metadata: title, show, season, episode, artwork, chapters, and content ratings; none of it is transmitted anywhere because the file never leaves your browser.
Can I convert VOB back to M4V?
Yes — the reverse route exists as a separate tool. Bear in mind that round-tripping .m4v → .vob → .m4v is not a perfect undo when any lossy step is involved; keep your original if fidelity matters.