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When you need VOB to MP4
VOB is the format DVD discs use to store video. If you insert a disc into a computer and browse its contents, you will see a VIDEO_TS folder with files like VTS_01_1.VOB, VTS_01_2.VOB, and so on. That is the actual video: a movie, a home recording, or a digitized tape, split into chunks of roughly one gigabyte each.
The problem is that DVD players are disappearing, and modern devices barely understand VOB files. A phone will not open them, a Smart TV will not play them from a USB drive, and you cannot send such a file through a messenger. MP4 solves all of that: it is the universal format that plays on phones, TVs, in browsers, and in any video editor.
What changes after conversion
You get a regular MP4 video file that you can keep on a computer or in the cloud, watch on any device, and share with family. The content stays the same: DVD video quality is limited by the disc itself, and conversion will not improve it, though it should not noticeably degrade it either. The result depends on the condition of the source file.
Keep one DVD quirk in mind: a single movie is often split across several VOB files. Each file is converted separately, so a long recording becomes several MP4 clips in sequence. The disc menu, chapter selection, and audio track switching are features of the DVD structure - they do not carry over into a regular video file.
When this is especially useful
- Your family video archive is on DVDs, and the DVD player broke or was thrown away long ago.
- A disc with a wedding, graduation, or school performance should be watchable on a phone or Smart TV.
- Old discs are starting to fail: scratches appear, the player reads them with errors, and the archive needs to be rescued while the recordings are still readable.
- A videographer once delivered the footage only on discs, and now you need a regular file.
- Recordings from discs need to be gathered in the cloud or on a hard drive together with the rest of your family videos.
Common tasks and search situations
- how to open a VIDEO_TS folder without a DVD player;
- convert home DVD video to MP4 for a phone;
- a tape digitized onto DVD will not open on a computer;
- wedding disc to MP4 to share with relatives;
- a VOB file will not play on a TV from a USB drive;
- save video from a DVD before the disc degrades;
- convert VTS_01_1.VOB to a regular video;
- edit a clip from a DVD in a video editor.
What to check before converting
- Copy the VOB files from the disc to your computer and make sure they open in at least some player. If the disc is scratched and the files copy with errors, conversion may fail or the result may contain artifacts.
- Convert the files from the VIDEO_TS folder, not the auxiliary IFO and BUP files - the video itself is stored in the VOB files.
- If the disc contains several VOB files, start with one and check the result before processing the whole archive.
- Do not throw the disc away right away: keep the original until you are sure every MP4 opens and plays all the way through.
Format and conversion limits
An honest warning: commercial movie DVDs are often copy-protected. VOB files from such discs may not copy correctly or may fail to convert - that is a limitation of the protection, not a service error. Home recordings, discs from videographers, and digitized tapes usually do not have this problem.
The quality of the result is determined by the source. DVD video has standard-definition resolution, noticeably below modern HD, and converting to MP4 will not make the picture sharper. If the VOB contains multiple audio tracks or subtitles, not everything may end up in the final file.
Related tasks
If the DVD video is meant for an old player or a car stereo that only understands AVI, use VOB to AVI.
If your old recordings are stored not on discs but as standalone MPEG or MPG files, for example from a TV tuner, use MPEG to MP4.
What is VOB to MP4 conversion used for
Rescuing a family archive
DVDs degrade over time: scratches and layer damage make recordings unreadable. Converting VOB to MP4 moves home videos to a computer and the cloud while the discs are still readable.
Wedding and graduation discs on a phone
The videographer delivered the footage on a DVD, but you want to watch it on a phone or Smart TV. After converting to MP4, the recording opens on any device and is easy to share with relatives.
Digitized tapes stored on discs
VHS tapes were once transferred to DVD, but now there is nothing to play the discs on either. MP4 settles the question for good: the file can be stored anywhere and plays everywhere.
A DVD clip for editing
Video editors do not work with a VIDEO_TS folder directly. After converting VOB to MP4, the recording opens in any editing app.
Tips for converting VOB to MP4
Copy the files off the disc first
Do not upload VOB files straight from the DVD: old discs read slowly and with errors. Copy the files to your computer, open them in a player, and only then convert.
Convert the files in order
If the recording is split across several VOB files, note the numbers in the file names - they define the order of the parts. That makes it easier to keep the resulting MP4 files straight.
Do not discard the discs right away
Keep the originals until you have checked that every resulting MP4 opens and plays all the way through. Only then consider the archive transferred.