How to Open a VOB File

What is a VOB file?

VOB (Video Object) is the file format that holds the actual video, audio and subtitle streams on a DVD-Video disc, stored inside its VIDEO_TS folder alongside .ifo (navigation/menu info) and .bup (backup) files. Structurally, a VOB is a standard MPEG-2 Program Stream — the same general container family used for broadcast and early digital video — carrying MPEG-2 compressed video multiplexed together with one or more audio tracks (commonly Dolby AC-3, DTS, or uncompressed LPCM) and optional bitmap-based subtitle overlays.

Because the DVD-Video spec caps each individual VOB file at just under 1GB (a legacy FAT32 filesystem limit), a full movie is automatically split across several sequentially-numbered files — VTS_01_1.VOB, VTS_01_2.VOB, and so on — that a DVD player or software reads back-to-back as one continuous title. That's exactly the container structure this page's tool reads directly: pack headers carrying real timestamps, the MPEG-2 sequence header describing the picture itself, and every audio/subtitle sub-stream multiplexed alongside it.

How to open a VOB file on Windows

1. Install VLC Media Player (free) — it plays .vob files immediately, with no codec packs needed.
2. Double-click the .vob file, or open VLC and use Media > Open File.
3. Windows Media Player doesn't support VOB out of the box; if you'd rather use it, you'd need a third-party codec pack, which VLC avoids entirely.
4. To convert to a more universally-editable format, use HandBrake (free) to re-encode it as MP4.

How to open a VOB file on Mac

1. Install VLC Media Player for Mac (free) — QuickTime does not play VOB files natively.
2. Open the .vob file directly with VLC, or drag it onto the VLC dock icon.
3. Use HandBrake if you need to convert it to MP4 for use in iMovie or Final Cut Pro, since neither edits VOB/MPEG-2 directly.

How to open a VOB file on Linux

1. Install VLC via your distribution's package manager (e.g. sudo apt install vlc on Debian/Ubuntu) — it plays VOB files immediately.
2. MPV and ffplay (part of ffmpeg) are lightweight command-line alternatives that also play VOB natively.
3. Use ffmpeg directly (ffmpeg -i input.vob output.mp4) to convert it to MP4 from the terminal.

Common VOB file problems and how to fix them

Windows Media Player says it can't play the file

WMP has no built-in MPEG-2/VOB support. Install VLC instead of hunting for a codec pack — it's free, plays VOB natively, and avoids the security risks of unofficial codec packs.

The video plays but there's no sound, or the wrong language is playing

DVDs often bundle multiple audio tracks (different languages, or commentary). In VLC, use Audio > Audio Track to switch. Use the tool on this page first to see every audio sub-stream actually present in the file before opening it.

Only a few minutes of a movie play before it cuts off

This is expected — DVD-Video splits a full title across multiple VOB files (each under 1GB). Make sure all the sequentially-numbered VOB files from the same title are present in the same folder; most players will only follow this automatically if opened from the disc structure (via the .ifo file) rather than a single VOB in isolation.

Related file extensions

Technical references

VOB files use the MPEG-2 Program Stream container, defined by the ITU-T/ISO's MPEG-2 Systems standard.

• ITU-T Recommendation H.222.0 — Information technology: Generic coding of moving pictures and associated audio information: Systems — The formal international standard (identical to ISO/IEC 13818-1) defining the MPEG-2 Program Stream container that DVD .vob files use.

Frequently asked questions