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VOB to MP4 converter

Convert VOB to MP4 in your browser. No upload and no account: the file never leaves your device, so the only size limit is your device’s memory.

I want MP4
Quality

Applies only when the video has to be re-encoded. A straight copy keeps the original quality.

Advanced 2
Always re-encode Rebuilds the picture as H.264 (VP9 for WebM) even when it could be copied. Fixes files that won’t play on older TVs and PCs.

Bytes of your files sent anywhere: 0 B

Related conversions

Other ways to convert VOB

Convert other formats to MP4

Read more about the VOB format and the MP4 format, or see every video tool and all video conversions.

Should you convert VOB to MP4?

Yes, when a device or app needs MP4. MP4 can’t carry the MPEG-2 video found in VOB files, so the picture is re-encoded as H.264 or HEVC (H.265), which takes about as long as the clip on a recent laptop.

MP4 also plays in far more places: every phone, browser, TV, editor, chat app and upload form.

VOB is the MPEG-2 video files inside a DVD’s VIDEO_TS folder; MP4 is the video container that plays on everything, usually holding H.264 video and AAC audio. Use MP4 whenever a video has to be sent, uploaded or played somewhere you don’t control.

VOB and MP4 compared
Property VOB MP4
Usually contains MPEG-2 video with AC-3 or MP2 audio H.264 or HEVC video with AAC audio
Support A legacy format Opens everywhere
Plays on DVD players and VLC; phones, browsers and editors mostly can’t Every phone, browser, TV, editor, chat app and upload form
Best for Playing a DVD structure as it was authored Sharing video anywhere
Introduced 1996 2003

How to convert VOB to MP4

  1. 01

    Add your VOB

    Drop your VOB video onto the box, or click to choose it. It is read from your disk and stays there.

  2. 02

    Check the settings

    The output is already set to MP4. Change the quality if you want to; the defaults suit most files.

  3. 03

    Save the MP4

    Press convert and save the MP4. Several files come back together as a ZIP.

What changes when VOB becomes MP4

Re-encoded, at a quality you choose

Because the video has to be compressed again, a little detail is lost. The default quality keeps the difference invisible; choose High for footage you’ll edit further.

Extra tracks

VOB files can hold several audio and subtitle tracks. The main video and first audio track are converted; use Unpack a Video to save the others as separate files.

Interlaced footage

Tape, DVD and broadcast video is often interlaced, which shows as comb-like lines on movement. Restore Old Video deinterlaces while it converts if the MP4 shows them.

Expect a much smaller file

VOB: Up to 1 GB per VOB, about 30–60 MB a minute. MP4: 1080p phone video runs roughly 60–130 MB a minute. Shrinking the file is often the main reason to make this conversion.

A one-time engine download

VOB is read by FFmpeg compiled to WebAssembly, a 31 MB download the first time. It is slower than your browser’s built-in video decoder, but nothing is uploaded and the engine stays cached for next time.

This page is put together from our notes on each format, choosing only what is true of VOB and MP4, so every pairing states the same facts the same way. How these pages are made.

Why it doesn’t upload

Video files are big, and uploading one just to change its container can take longer than the conversion itself. Your browser can read and write these formats, so the file never has to leave your device.

How to check for yourself

Worth knowing

  • About the VOB. A film is spread across VTS_01_1.VOB, VTS_01_2.VOB and so on; converting one gives you one chunk of it. Commercial discs are usually copy-protected too.
  • About the MP4. An MP4 that won’t play is rarely broken; it usually holds a newer codec such as HEVC or AV1 that the player doesn’t support.
  • MP4, MOV, MKV and WebM are handled by your browser’s own video engine, often with hardware help. AVI, WMV, FLV, MPG and the other older formats use the FFmpeg engine, a one-time 31 MB download, and are slower.

Questions

Does converting VOB to MP4 lose quality?

The video is re-encoded, so a little detail is lost, but the default quality is set high enough that it doesn’t show.

Will a MP4 play on my phone?

MP4 opens everywhere: every phone, browser, TV, editor, chat app and upload form. Every device plays MP4: double-click it, or drag it into a browser tab.

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