Does VOB → MP4 lose quality?

MP4 uses lossy compression - some detail is always dropped. We pick sensible quality defaults (e.g. JPG q:90, MP3 q:a 2 ~190 kbps) so you wouldn't see / hear the difference.

Which codecs do you use?

For MP4: H.264 (libx264) + AAC. For WebM: VP9 + Opus. For MKV: H.264 + AAC. For AVI: MPEG-4 + MP3. All widely compatible - browsers, phones, TVs.

For H.264 we use CRF 23 (sweet spot - good quality, small size). For VP9 - CRF 32. If you need a smaller file or higher quality, run ffmpeg locally with custom flags.

No. Downloading from YouTube violates their ToS. Get the file on disk first (legally), then upload here.

How long does it take?

Depends on duration and resolution. 5 min HD ~ 30-60 sec. 30 min 4K can take several minutes. The progress bar shows current state.

Is the conversion safe?

Yes. Small files convert inside your browser - never uploaded. Larger ones land on our server temporarily and are wiped automatically: 200 MB after 10 min, 100 MB after 20 min, 50 MB after 30 min, smaller after one hour. You can also delete them instantly after download.

Yes - 200 MB max per file. Larger files get rejected for performance and cost reasons.

Do you preserve original quality?

Depends on the pair. Lossy compression (e.g. JPG, MP3) always trims something - we set sensible defaults. Lossless (FLAC, PNG, ZIP) keeps everything 1:1.

Do I need an account?

No. The converter works right away - no signup, no login, no payment.

YourDevToolsPro

VOB to MP4 converter

VOB to MP4 converter online. Free, no watermarks, no account.

Runs in your browser

VOB → MP4 converter

VOB to MP4 conversion in 3 steps: upload, click convert, download.

Files auto-delete from our server

Anything you upload is wiped 3 minutes after you close this tab or leave the tool. Protects your privacy and keeps our disks clean.

Drop a file here or click to pick one

The file goes to our server, gets converted, and is wiped automatically.

Up to 200 MB per file

Your privacy. Small files convert locally in your browser. Larger ones land on our server temporarily and are wiped automatically, latest after one hour. You can also delete them instantly after downloading.

Convert VOB to MP4

VOB to MP4 converter: upload, click convert, download the result. Free, no watermarks, no account. Small files convert inside your browser (never uploaded). Larger ones go to our server and disappear automatically after a few minutes. Hit "Delete now" to wipe them instantly after download.

How to convert

Pick your VOB file - drag it onto the dropzone or click to choose.
The target format MP4 is already selected.
Hit Convert and wait a few seconds. Larger files take longer.
Download the result. Press Delete now to wipe the server copy immediately.

When to use it

Social media uploads - MOV / MKV / AVI → MP4 (universal everywhere).
Web - MP4 → WebM for lighter in-browser loading.
GIF clips - MP4 → GIF for memes and tutorials.
Extract audio - MP4 / MKV → MP3 / WAV.
VOB → MP4 - the most common reason for this pair.

Frequently asked questions

VOB is the DVD-Video format — fixed MPEG-2, organized in 1 GB chunks for the DVD spec. MP4 with H.264 takes half the space at better quality and plays on phones. Use this to back up DVDs into a modern, portable format.

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