Extract Hardsub From Video -

Video-subtitle-extractor (VSE) is built for this.

Not an OCR tool, but Topaz can upscale and sharpen the subtitle region before you feed it into an OCR engine. This can dramatically improve accuracy for low-resolution videos.

Workflow:

While the technology is mature, users should expect the following frustrations:

AviSub is a dedicated hardsub extractor. It works by comparing frames to detect subtitle changes. extract hardsub from video

How it works:

Pros:

Cons: