What is a VOB file?
VOB — DVD video
Use the format VOB
A concrete example
Prepare a copy MP4 from a VOB that you have.
Useful checks
A VOB may only represent part of the title. Check the duration, ratio, and language of the audio track.
Choose a conversion
Keep the original and open the result in the software or on the device that will need to use it.
Your questions about this format
How to choose between MP4, WEBM, and MKV?
MP4 is suitable for many sharing purposes; WEBM is particularly intended for web playback. MKV may be better suited for content with multiple tracks. Look at the outputs offered for your file and test the result on the player you will actually use.
Can I extract only the audio from my video?
Yes, if MP3 is listed among the outputs of your source. Add the video, choose MP3, and start the conversion. The file must contain an audio track: a silent video cannot produce a sound recording.
Why am I being offered MKV for tracks and subtitles?
Not all outputs retain the same tracks. If the engine indicates that a MKV container is required, go back to the output selection and choose MKV instead of forcing a conversion that would remove elements. This output may fall under NoLimit.
How many videos can I convert for free?
The free offer allows one video per day, within the total quota of ten files and the limit of 100 MB per file. A batch of three files does not add three video rights: the video quota remains shared. A valid NoLimit access adjusts the limits according to the displayed offer.
What is it?
VOB is the format used by video DVDs. It's the file you find in the VIDEO_TS folder of a disc: it holds the picture, sound, subtitles, and menus.
It relies on the MPEG-2 codec, which is light on processing power but heavy on storage — which is why a film can take up several gigabytes where a modern MP4 would manage with a few hundred megabytes.
History & origin
The format was born alongside the DVD in 1996 and dominated home video until Blu-ray and downloading came along.
Its most visible quirk — splitting the film into chunks under one gigabyte each — is a holdover from the file systems of the era.
Why it is useful
Decent quality, a standardized structure, and guaranteed playback on any living-room DVD player.
It preserves the multiple audio tracks and subtitles from the original disc.
Limits & drawbacks
A considerable file size for a resolution that isn't even high definition.
The film is split across several files, and commercial DVDs are encrypted — which blocks copying and conversion.
Practical tips
To archive a DVD you own the rights to, convert the VOB files to MP4: you'll get a single file, ten times smaller, playable on both phones and TVs.
Always check which audio track and subtitles you're keeping: a VOB often contains several, and conversion doesn't necessarily preserve the right one.
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Convert a VOB