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Significantly Compress VOB Files for About 80% Space Saving.
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How to Significantly Compress VOB Files - About 80% Space Saving

Author by Oswald

Updated on June 01, 2023

VOB is a container format that holds video data of your DVD. Mostly, there are multiple large VOB files in a DVD folder, which consume too much drive storage. In this post, I'll introduce a decent tool that can help you compress VOB files significantly for better storage & playback. Before reading this post to learn how to shrink VOB file size, you are recommended to download the VOB compressor here:

Things You Should Know About VOB Files

Q: I'm doing a project and I have 8 VOB files, each over 1 GB and altogether they exceed 8 GB. I want to merge these files together into one single file and reduce the file size because it's extremely large (and perhaps convert them to MP4). Thanks in advance.

- From Video Help Forum

DVD directory structureDVD directory structure

A: That's a frequently asked question by users who have ripped their DVDs to digital backups. When it comes to VOB files, we mostly refer them to VIDEO_TS folders containing multiple VOB, IFO, BUP files rather than the VOB video(s) solely. VOB, IFO and BUP files compose the complete Directory Structure of a DVD folder and are indispensable if you want to keep data intact - which is the reason why, to compress DVD files, the right move is to compress the entire VIDEO_TS folder rather than just the VOB files.

It's not as sophisticated as it might sound if you pick the right tool. Here's a decent one I recommend: WonderFox DVD Ripper Pro. It's a top-rated and well-received DVD processing tool that can rip your DVD VOB video with original quality preserved. Besides, with its help, you can easily sort out the messy, scattered DVD files, single out the main title, and convert it to a single video with the full movie plot. 300+ output formats and devices are supported including MP4, MKV, MOV, WMV, AVI, iOS/Android devices, HD TV, etc. In the following, I'll show you the detailed steps on how to compress VOB files, or rather, compress DVD files with WonderFox DVD Ripper Pro.

How to Compress VOB Files with WonderFox DVD Ripper Pro

Load VIDEO_TS folder into the program

Before start, please free downloadfree download the VOB file compressor.

Step 1. Load VIDEO_TS Folder into the VOB Compressor

Launch WonderFox DVD Ripper Pro. At the main workplace, you can define the destination path at the "Output Folder" box. Then click on the "DVD Folder" button to import the whole VIDEO_TS folder to the program. The main movie(s) will be highlighted and automatically selected after the analyzation, and you can right-click the main interface to activate all titles for ripping.

Tips: Manually select all the main titles and neglect the warning message when your VIDEO_TS folder is a TV series, workout video set, or anything with multiple main titles.

Compress VOB to MP4

Step 2. Compress VOB files to MP4

Now let's choose an output file format. It's recommended to convert VOB to MP4 since MP4 format features the best compatibility, preferable quality, and what's more, much better compression that brings about much smaller file size. Click on the output format section on the right side of the interface and select MP4 format from the "Video" category.

Sure, you can also convert VOB to any other preferred video format or device by clicking the corresponding icon. Converting VOB to android, for instance.

Start the VOB Compression

Step 3. Start the Compression Process

Before that, you can transcode your video to an advanced encoder to reduce video size even further, like transcoding DVD to H.265, which enhances video quality as well. If needed, hit the small "Settings" button at the lower-right side of the interface. Note that the compression process gets longer if you do that.

Hit "Run" when it's all set to start the ripping process.


I hope you have learned how to compress VOB files thoroughly. For those who really want to shrink DVD files but are still hesitant, WonderFox DVD Ripper Pro definitely won't let you down – As mentioned previously, not just a VIDEO_TS compressor, the program is also a VOB merger that rearranges and joins the scattered VOB files automatically, so a single compact file is what you'll get as an output. Download this VOB video converter to have it a try!

Also Read: Compress WMV Files | Compress MPG Video Files | Reduce MP4 File Size| Compress Video for YouTube

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Compress All Kinds of DVDs and Videos

Compress All Kinds of DVDs and Videos

WonderFox DVD Video Converter

The most reliable and practical tool designed for DVD and video/audio conversion. If you are looking for a program that can compress any video type – MP4, AVI, MKV, MOV, WMV, HEVC, DVD-Video, or 4K/ 8K videos, etc with the least quality loss, WonderFox DVD Video Converter is exactly the one you seek. Get it below and start your work now!

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