Subtitle Studio

Extract embedded subtitle tracks from your media files, convert image-based subtitles to searchable SRT with OCR, and clean up subtitle files with three tiers of automated correction.

Subtitle Extraction view with detected tracks and queue

Subtitle Extraction

Detect and extract every subtitle track embedded in your media files. Text-based subtitles are extracted directly in their original format. Image-based subtitles from Blu-ray (PGS) and DVD (VobSub) discs are converted to SRT through a full OCR pipeline — so you get searchable, editable subtitle files from any source.

Subtitle Workshop with tier selection and corrected SRT

Subtitle Workshop

Clean up extracted or existing SRT files with a three-tier correction system. Start with instant local fixes, escalate to cloud-based cleanup, and finish with AI-powered grammar and spelling correction.

Tier 1 — Local Cleanup

Instant, rule-based fixes: strip HTML and formatting tags, fix common OCR errors, remove hearing-impaired annotations, and normalize whitespace.

Tier 1.5 — Cloud Cleanup

Advanced pattern-based cleanup via Subtitle Tools API. Remove watermarks, fix uppercase cues, strip SDH indicators, and merge duplicate entries.

Tier 2 — AI Correction

Grammar, spelling, and punctuation fixes powered by Claude AI. Processes subtitles in batches with multi-language support and cost-efficient Haiku model.

Timeshift & Sync

Fix out-of-sync subtitles by selecting a known line, entering the expected timestamp, and applying the calculated offset to the entire file.

Supported formats