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Image Subtitle Converter

The Image Subtitle Converter task converts image-based subtitle tracks (found in raw .sup / PGS streams common on Blu-ray discs) into clean, text-based subtitle files.

Because many media players, devices, and automation workflows cannot read raw image layers directly, this task extracts the graphic layers and uses intelligent text recognition to turn them into readable text.

Configuration Settings​

Concurrent Tasks​

  • Description: The maximum number of image subtitle converter tasks that can run simultaneously.
  • Usage: Converting image subtitles requires a notable amount of system compute. Setting this to 1 or 2 keeps your processing nodes balanced.

LLM​

  • Description: Selects the configured LLM provider instance (e.g., Ollama or LM Studio) used to assist with the text conversion.

Why Use Image Subtitle Converter?​

  • Device Compatibility: Converts unplayable picture subtitles into universally supported text subtitle formats that work flawlessly on any phone, tablet, or smart TV player.
  • Enables Translation (Subtitle Resolver Pipeline): Image subtitles cannot be read or translated by translation engines. This task is heavily utilized by the Subtitle Resolver workflow to bridge the gap—converting those image layers into text first so they can seamlessly be passed along to the Subtitle Translator task.