Convert VOB to MP4, Free
Upload your VOB file and get a MP4 in seconds. No account, no watermark.
How to convert VOB to MP4
VOB (Video Object) files are the video files stored on DVD discs inside the VIDEO_TS folder. They use MPEG-2 video and Dolby AC3 audio, which are not widely supported on modern devices without special software. Converting VOB to MP4 produces a file that plays on any smartphone, tablet, computer, or streaming device.
BoltConverter converts VOB files to H.264 MP4 on its servers. The MPEG-2 video is re-encoded and the audio is converted to AAC. The resulting MP4 is significantly more compatible than the original VOB and is suitable for archiving home video DVD content.
Upload your VOB file
Click the upload area or drag your .vob file onto the page. VOB files can be large; the file size limit is shown on the page.
Re-encoding runs on the server
The MPEG-2 video and AC3 audio in the VOB are decoded and re-encoded to H.264 MP4.
Download the MP4
Save the MP4 file. It plays on any modern device or media player.
Frequently asked questions
Can I convert copy-protected DVD VOB files?
No. VOB files from commercially copy-protected DVDs are encrypted. This converter handles unprotected VOB files only, such as home recordings.
Why are VOB files so large?
VOB files use MPEG-2 compression, which is less efficient than modern codecs. A typical DVD-quality VOB might be 1 to 2 GB per hour of video. The resulting MP4 will be smaller due to H.264's better compression.
Will the audio be in sync with the video?
Yes. The converter maintains audio-video sync during re-encoding.
Can I combine multiple VOB files from one DVD?
DVD titles are often split across multiple numbered VOB files. Upload them one at a time or combine them into a single video file before uploading.
What quality settings are used for the MP4 output?
The converter uses settings that balance quality and file size for typical DVD content. The output quality is comparable to the original DVD but in a much more compatible format.