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 AAC
Pulling the soundtrack out of a .vob video into .aac audio keeps what you can hear and drops the picture entirely. Free, private, and validated — the file never leaves your browser.
100% private for supported formats
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 AAC audio
Pulling the soundtrack out of a .vob video into .aac audio keeps what you can hear and drops the picture entirely. 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.
An .aac file holds raw Advanced Audio Coding data, usually as an ADTS stream. AAC was designed as MP3's successor and delivers audibly better quality at the same bitrate, though the bare .aac extension is rarer than AAC audio traveling inside .m4a or .mp4 files. For this route the practical draw is noticeably more efficient than MP3 at equal bitrates and hardware decoding in essentially every phone and TV — balanced against raw ADTS files handle tags and cover art poorly, which is worth knowing before you commit a large batch.
Why convert VOB to AAC?
The usual reason to take .aac audio out of a .vob 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, files split at roughly 1 GB boundaries and must be rejoined for continuous playback; on the target side, the payoff is noticeably more efficient than MP3 at equal bitrates, which is exactly what you want for receiving the audio track copied out of MP4 video without re-encoding.
VOB vs AAC at a glance
| Aspect | DVD video object (.vob) | AAC audio (.aac) |
|---|---|---|
| Format type | Container — quality depends on the codecs and settings inside | Lossy — discards detail it judges invisible to shrink files |
| How it stores data | an MPEG-2 program stream variant extended with navigation packs (PCI/DSI) that DVD players use for menus and seeking | a pure MDCT transform codec, free of the hybrid filterbank compromise that limited MP3 |
| Strongest at | backing up home-movie DVDs before the media degrades | receiving the audio track copied out of MP4 video without re-encoding |
| Weak spot | files split at roughly 1 GB boundaries and must be rejoined for continuous playback | raw ADTS files handle tags and cover art poorly |
| Metadata | none inside the VOB itself; titles, chapters, and menu logic live in the accompanying IFO files on the disc | no standard tag container exists for raw ADTS streams; ID3 tags are sometimes prepended but poorly supported, so wrapping in .m4a is the reliable way to tag AAC |
Pick AAC as the output
Select .aac in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if AAC 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 AAC file. Outputs keep the original filename with the .aac extension.
VOB to AAC questions, answered
Will converting VOB to AAC lose quality?
Since vob is container-oriented and aac is lossy-oriented, the conversion preserves the source content exactly as stored; no additional compression pass is applied beyond what .aac itself requires.
Is it private to convert VOB files here?
Yes — the .vob 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 AAC file work?
AAC decoding is built into every browser, phone, and operating system, whether the audio arrives as a raw .aac stream or inside an .m4a wrapper. The last holdouts are elderly MP3-only car stereos and bargain portable players.
Will the AAC file be bigger or smaller than my VOB?
Much smaller — the video stream is usually 80–95% of a .vob 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 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.