@miraiclip/localize

One project, many languages. localizeProject finds every string a viewer sees (text clips, captions, html block text, chapter markers, the project name) plus your narration script, translates them in one batch and returns a variant document per language.

import { chatTranslator, deeplTranslator, localizeMany } from "@miraiclip/localize";
import { synthesizeNarration, alignNarration } from "@miraiclip/narration";

const variants = await localizeMany(baseDoc, deeplTranslator({ apiKey }), ["fr", "de", "hi"], { script, keep: ["Miraiclip"] });
for (const [lang, v] of Object.entries(variants)) {
  const takes = await synthesizeNarration(voice, v.script!, { store });
  const aligned = alignNarration(v.doc, v.script!, takes, { clipIds: ["screen"] }); // re-voiced, re-timed
}

• Translators: any chat model (chatTranslator, good with tone and context) or DeepL (deeplTranslator); bring your own by implementing Translator.
• Kept terms (product names, untranslated UI labels) and {{placeholders}} survive translation.
• Captions keep their word timing when the word count matches and are re-spread evenly when it doesn't. Re-run ASR on the new voice for exact karaoke timing.
• Colours, URLs, numbers and settings in html blocks are left alone (isTextParam, overridable).

Docs: https://docs.miraiclip.com/