{
  "$schema": "https://ui.shadcn.com/schema/registry-item.json",
  "name": "caption-karaoke",
  "title": "Caption Karaoke",
  "description": "Transcript captions where each word fills with colour left to right exactly as it is spoken, the whole phrase readable before the voice reaches it.",
  "dependencies": ["remotion", "@remotion/captions"],
  "registryDependencies": ["@remocn/caption-core"],
  "files": [
    {
      "path": "registry/remocn/caption-karaoke/index.tsx",
      "content": "\"use client\";\n\nimport { Fragment } from \"react\";\nimport { Easing, interpolate } from \"remotion\";\nimport {\n  type CaptionBaseProps,\n  DEFAULT_HOLD_MS,\n  getExitWindowMs,\n  groupCaptionWords,\n  useCaptions,\n} from \"@/lib/remocn/caption-core\";\n\nexport interface CaptionKaraokeProps extends CaptionBaseProps {\n  activeColor?: string;\n  shadow?: boolean;\n}\n\nconst ENTER_MS = 160;\nconst EXIT_MS = 220;\nconst RISE_EM = 0.14;\nconst LEGIBILITY_SHADOW =\n  \"0 2px 3px rgba(0, 0, 0, 0.5), 0 4px 16px rgba(0, 0, 0, 0.35)\";\n\nconst enterEasing = Easing.bezier(0.2, 0.8, 0.2, 1);\n\nexport function CaptionKaraoke({\n  captions,\n  combineTokensWithinMilliseconds = 1200,\n  holdMs = DEFAULT_HOLD_MS,\n  fontSize = 64,\n  fontWeight = 800,\n  color = \"#ffffff\",\n  activeColor = \"#facc15\",\n  shadow = true,\n  className,\n}: CaptionKaraokeProps) {\n  const state = useCaptions({\n    captions,\n    combineTokensWithinMilliseconds,\n    holdMs,\n  });\n  if (!state) return null;\n\n  const enter = interpolate(\n    state.previous ? ENTER_MS : state.sinceStartMs,\n    [0, ENTER_MS],\n    [0, 1],\n    {\n      easing: enterEasing,\n      extrapolateLeft: \"clamp\",\n      extrapolateRight: \"clamp\",\n    },\n  );\n  const exit = state.endsInSilence\n    ? interpolate(\n        state.untilEndMs,\n        [0, getExitWindowMs(state, EXIT_MS)],\n        [0, 1],\n        {\n          extrapolateLeft: \"clamp\",\n          extrapolateRight: \"clamp\",\n        },\n      )\n    : 1;\n\n  return (\n    <div\n      className={className}\n      style={{\n        fontSize,\n        fontWeight,\n        color,\n        lineHeight: 1.2,\n        textAlign: \"center\",\n        opacity: Math.min(enter, exit),\n        transform: `translateY(${(1 - enter) * RISE_EM}em)`,\n      }}\n    >\n      {groupCaptionWords(state.tokens).map((word, w) => (\n        <Fragment key={`${state.pageIndex}-${word[0].index}`}>\n          {w > 0 && \" \"}\n          <span style={{ display: \"inline-block\", whiteSpace: \"nowrap\" }}>\n            {word.map(({ index, token }) => (\n              <span\n                key={index}\n                style={{ position: \"relative\", display: \"inline-block\" }}\n              >\n                <span\n                  style={{ textShadow: shadow ? LEGIBILITY_SHADOW : undefined }}\n                >\n                  {token.text}\n                </span>\n                <span\n                  aria-hidden\n                  style={{\n                    position: \"absolute\",\n                    inset: 0,\n                    color: activeColor,\n                    clipPath: `inset(0 ${(1 - token.progress) * 100}% 0 0)`,\n                  }}\n                >\n                  {token.text}\n                </span>\n              </span>\n            ))}\n          </span>\n        </Fragment>\n      ))}\n    </div>\n  );\n}\n",
      "type": "registry:component",
      "target": "components/remocn/caption-karaoke.tsx"
    }
  ],
  "type": "registry:component"
}