LumaTool Editorial Team

Subtitle & YouTube Caption Guides

Practical tutorials for extracting, cleaning, converting, translating and optimizing subtitles.

Featured Guide

YouTube Subtitles

An end-to-end, auditable workflow for extracting, cleaning, converting, translating, timing, checking, and adapting YouTube subtitles for dubbing.

YouTube Subtitles

Choose the safest extraction path for videos you own or can access, and turn the result into an editable subtitle source.

Published 2026-08-02 · Updated 2026-08-10

Subtitle Editing

Repair punctuation, repeated fragments, names, segmentation, and filler noise without destroying the original timing evidence.

Published 2026-08-06 · Updated 2026-08-10

Subtitle Timing

Diagnose constant offset, progressive drift, overlaps, frame-rate mismatch, and auto-caption timing before choosing a repair.

Published 2026-08-07 · Updated 2026-08-10

Subtitle Translation

Translate YouTube captions with a cue-safe workflow for terminology, context, timing, reading speed, and final review.

Published 2026-08-08 · Updated 2026-08-10

TTS & Dubbing

Turn a subtitle track into a speakable, timed dubbing script with pronunciation notes, duration budgets, and segment-level QA.

Published 2026-08-10 · Updated 2026-08-10

YouTube Subtitles

A practical guide to obtaining timestamped YouTube captions, choosing the right source, and validating the file before editing.

Published 2026-08-01 · Updated 2026-08-10

Subtitle Formats

Convert timed YouTube captions to valid SRT while preserving cue text, order, and timing precision.

Published 2026-08-03 · Updated 2026-08-10

Subtitle Formats

Turn a valid SRT file into WebVTT, preserve readable cues, and verify the result in the target player.

Published 2026-08-04 · Updated 2026-08-10

Subtitle Formats

Compare SRT and WebVTT syntax, browser support, styling, metadata, and practical delivery tradeoffs.

Published 2026-08-05 · Updated 2026-08-10