Convert DVD (VOBSUB) subtitles to SRT

If you have ripped a DVD, its subtitles come across as VOBSUB — and like Blu-ray subtitles, they’re images, not text. So converting VOBSUB to SRT takes OCR. The good news: it’s the same simple flow as a Blu-ray track.

What VOBSUB is (and why .sub/.idx)

DVDs store subtitles as sub-pictures: a bitmap of each line drawn over the video. When you rip a DVD, that stream is usually saved as a VOBSUB track — a .sub file holding the images plus a small .idx file describing the timing. Inside an MKV, the same data rides along as a VOBSUB track. Because the words only exist as pictures, a text editor can’t touch them until they’ve been read by OCR. See image-based vs text-based subtitles explained for how VOBSUB compares to the other formats.

Convert VOBSUB to SRT in three steps

VOBSUB works exactly like a Blu-ray PGS track in PGSExtract — same browser flow, same free preview.

1. Open your MKV and pick the VOBSUB track. The file is parsed locally in your browser; only the small subtitle stream is uploaded, never your video.
2. Choose the language and run OCR. DVD subtitles exist in dozens of languages — pick yours from over a hundred, and run the free 100-frame preview to check quality first.
3. Download your SRT. You get a standard SubRip .srt with the original timing, ready to edit or translate.

VOBSUB vs PGS

They’re the disc-specific versions of the same idea: VOBSUB is DVD, PGS is Blu-ray, and both are image-based subtitles that need OCR to become text. PGSExtract detects and handles either one automatically. If your source is a Blu-ray, see how to convert PGS subtitles to SRT. Not sure what’s in your file? Start with how to extract subtitles from an MKV, or read the docs for the full pipeline and FAQ.

Convert your DVD subtitles now — free preview, no account needed.