What happens when you convert VOB to MPG
- If the video inside the VOB is already MPEG-2, the tool first copies the streams straight into the MPG. That takes seconds and loses nothing.
- If a copy is not possible, it re-encodes to MPEG-2 video with MP2 audio, which is slow in a browser: expect several times the video's length for HD footage, less at lower resolutions.
How to convert VOB to MPG online
- Press "Choose VOB files" and select one or more files, or drag them onto the box. You can add files of any size your device can hold in memory.
- Adjust the settings if you need to: resolution and quality control the size of the result. The defaults suit most people.
- Press "Convert to MPG". The first audio or video conversion downloads the converter engine, about 32 MB, which your browser then keeps for next time.
- Save each MPG with its download button. Close the tab and every trace of the files is gone from memory.
Why convert VOB to MPG?
VOB files usually come from the VIDEO_TS folder of a DVD. People convert them to MPG because MPEG-2 is what DVD authoring tools and many broadcast systems accept.
In short, VOB is good at what it was made for, and MPG is the more practical choice when the file has to play, upload or edit somewhere else. VOB does not play in browsers; plays in VLC and DVD software, while MPG does not play in most browsers; plays in VLC and desktop players.
How to convert VOB to MPG on Windows, Mac, iPhone and Android
On Windows
Open this page in Chrome, Edge or Firefox, drag your VOB files in from File Explorer, and press Convert. Each MPG is saved to your Downloads folder. If you prefer a desktop program, VLC can also convert VOB to MPG: choose Media, then Convert / Save.
On a Mac
Safari, Chrome and Firefox all work. Drag the VOB files from Finder onto the drop zone and the MPG files land in Downloads.
On iPhone and iPad
Open the page in Safari and tap Choose VOB files. You can pick from Photos or from the Files app. The converted MPG appears in Files, in the Downloads folder; to put it in your photo library, open it there, tap Share and choose Save Video.
On Android
Open the page in Chrome, tap Choose VOB files and pick them from Files or your gallery. The MPG is saved to the Download folder, where any file manager can find it. Keep the screen on while a long video converts, because Android may pause a tab in the background.
Best settings for VOB to MPG
MPG is written as MPEG-2 video with MP2 audio. The Resolution setting is the one to reach for: 1080p keeps full HD detail, 720p is plenty for phones and laptops and roughly halves the size, and 480p suits email and old devices. Leave Resolution on Keep original and Quality on Standard, and a VOB whose video is already MPEG-2 is copied into the MPG rather than re-encoded, which is fast and loses nothing.
The quality levels map to the H.264 CRF scale where the target uses H.264, and to fixed high-quality settings for older codecs such as MPEG-2, MPEG-4 Part 2, WMV and Theora. Re-encoding always costs a little detail, so convert from the best copy of the VOB you have.
VOB vs MPG: the differences
| VOB | MPG | |
|---|---|---|
| Full name | DVD Video Object | MPEG-1 or MPEG-2 video |
| Type | video | video |
| Created by | the DVD Forum | the Moving Picture Experts Group |
| First released | 1996 | 1993 |
| Compression | Lossy | Lossy |
| Usually contains | MPEG-2 video with AC3, MP2 or PCM audio | MPEG-1 or MPEG-2 video with MP2 audio |
| In a browser | does not play in browsers; plays in VLC and DVD software | does not play in most browsers; plays in VLC and desktop players |
| Common uses | the VIDEO_TS folder of a DVD | camcorder footage, Video CDs and DVD extracts |
| MIME type | video/dvd | video/mpeg |
About VOB and MPG files
What is a VOB file?
VOB files are the video chunks inside a DVD's VIDEO_TS folder, each capped at 1 GB, so one film is split across several. Commercial DVDs are encrypted and will not convert; home-burned discs will.
What is an MPG file?
MPG is the three-letter extension for MPEG program streams. Sony and Panasonic camcorders from the 2000s often recorded straight to MPG.
VOB to MPG not working? Common problems
- The conversion is slow. Audio and container changes take seconds, but re-encoding video runs on your own processor. Lower the resolution to 720p, close other tabs, and keep the device plugged in.
- The tab stops or reloads on a very large file. Browsers limit how much memory one tab can use, around 2 GB and less on phones. Split long recordings or convert them on a computer.
- The VOB will not convert at all. Files bought from iTunes and commercial DVD or Blu-ray discs are copy protected, and no legitimate converter can read them. Home-made files convert normally.
Convert VOB to MPG with ffmpeg
This converter runs ffmpeg inside your browser. If you would rather use the ffmpeg command line on your own computer, this command produces an equivalent MPG with the same kind of settings:
ffmpeg -i input.vob -c:v mpeg2video -q:v 3 -c:a mp2 -b:a 192k -f mpeg output.mpgReplace input.vob with the name of your file. For a whole folder of VOB files, run the command in a loop, or drop them all on the converter above, which processes them one after another.
VOB to MPG converter FAQ
Will I lose quality converting VOB to MPG?
A little. Both formats are lossy, so re-encoding compounds the loss slightly. Keep the default quality or higher and the difference is rarely noticeable.
Why is the MPG a different size from the VOB?
It depends on the settings. At the defaults, the MPG usually comes out close in size to the VOB; lower the quality for a smaller file.
Are my VOB files uploaded anywhere?
No. The conversion runs inside this browser tab using ffmpeg compiled to WebAssembly, so your files stay on your device. You can disconnect from the internet after the page and converter engine have loaded and it still works.
Can I convert several VOB files to MPG at once?
Yes. Select or drop as many files as you like; they are converted one after another and each gets its own download button.
How do I open an MPG file?
MPG does not play in most browsers; plays in VLC and desktop players. MPG is common for camcorder footage, Video CDs and DVD extracts.
Is this VOB to MPG converter free?
Yes. There is no sign-up, no watermark and no limit on how many files you convert. The site is paid for by advertising, and because conversions run on your device there is no server cost per file.
Can I convert VOB to MPG on my phone?
Yes. The converter works in Safari on iPhone and iPad and in Chrome on Android. Long HD videos convert more slowly on a phone than on a computer.