Fix oversized SRT/VTT caption cues on export

components/ExportDialog.tsx

@@ -42,6 +42,8 @@ type ExportTab = "video" | "audio" | "transcript" | "timeline";
 
 /** Document formats that support an optional timestamps toggle. */
 const DOC_FORMATS = new Set<TranscriptFormat>(["txt", "md", "docx", "pdf"]);
+/** Caption formats that support the short-cues toggle. */
+const SUBTITLE_FORMATS = new Set<TranscriptFormat>(["srt", "vtt"]);
 
 const VIDEO_FORMATS: { value: VideoExportFormat; label: string }[] = [
   { value: "mp4", label: "MP4" },
@@ -110,6 +112,7 @@ export default function ExportDialog() {
   const [audioFormat, setAudioFormat] = useState<AudioExportFormat>("m4a");
   const [textFormat, setTextFormat] = useState<TranscriptFormat>("txt");
   const [includeTimestamps, setIncludeTimestamps] = useState(false);
+  const [shortCues, setShortCues] = useState(true);
   const [timelineFormat, setTimelineFormat] =
     useState<TimelineExportFormat>("resolve");
   const [timelineFrameRate, setTimelineFrameRate] =
@@ -269,6 +272,7 @@ export default function ExportDialog() {
   ]);
 
   const textSupportsTimestamps = DOC_FORMATS.has(textFormat);
+  const textSupportsShortCues = SUBTITLE_FORMATS.has(textFormat);
 
   const exportText = useCallback(() => {
     // Read live store state at click time so a rename / replace-in-project
@@ -282,20 +286,24 @@ export default function ExportDialog() {
         cuts: liveCuts,
         speakers: speakersFromWords(s.words, s.speakers),
         ...(textSupportsTimestamps ? { timestamps: includeTimestamps } : {}),
+        ...(textSupportsShortCues ? { shortCues } : {}),
       });
       setError(null);
       trackEvent("export_completed", {
         kind: "transcript",
         format: textFormat,
         ...(textSupportsTimestamps ? { timestamps: includeTimestamps } : {}),
+        ...(textSupportsShortCues ? { shortCues } : {}),
       });
     } catch (err) {
       setError(err instanceof Error ? err.message : en["error.export"]);
     }
   }, [
     textFormat,
     textSupportsTimestamps,
+    textSupportsShortCues,
     includeTimestamps,
+    shortCues,
     baseName,
   ]);
 
@@ -506,9 +514,24 @@ export default function ExportDialog() {
                 <span>{t("export.includeTimestamps")}</span>
               </label>
             )}
+            {textSupportsShortCues && (
+              <label className="flex cursor-pointer items-center gap-2.5 rounded-lg bg-zinc-50 px-3 py-2.5 text-sm text-zinc-700 dark:bg-zinc-800/60 dark:text-zinc-200">
+                <input
+                  type="checkbox"
+                  checked={shortCues}
+                  onChange={(e) => setShortCues(e.target.checked)}
+                  className="h-3.5 w-3.5 rounded border-zinc-300 text-zinc-900 focus:ring-zinc-400 dark:border-zinc-600 dark:bg-zinc-900"
+                />
+                <span>{t("export.shortCues")}</span>
+              </label>
+            )}
             <p className="text-xs text-zinc-500 dark:text-zinc-400">
-              {textFormat === "srt" || textFormat === "vtt" || textFormat === "json"
-                ? t("export.subtitlesHelp")
+              {textFormat === "srt" || textFormat === "vtt"
+                ? shortCues
+                  ? t("export.subtitlesHelpShortCues")
+                  : t("export.subtitlesHelp")
+                : textFormat === "json"
+                  ? t("export.subtitlesHelp")
                 : includeTimestamps
                   ? t("export.transcriptHelpTimestamps")
                   : t("export.transcriptHelp")}

lib/i18n/messages/de.ts

@@ -140,13 +140,16 @@ export const de: Record<MessageKey, string> = {
   "export.statCuts": "Schnitte",
   "export.statEdited": "Bearbeitet",
   "export.includeTimestamps": "Zeitstempel einbeziehen",
+  "export.shortCues": "Kurze Untertitel (≤5 s)",
   "export.transcriptHelp": "Text mit Sprecherlabels und entfernten Schnitten.",
   "export.transcriptHelpTimestamps":
     "Text mit Sprecherlabels und entfernten Schnitten. Jeder Abschnitt beginnt mit der Zeit auf der bearbeiteten Timeline.",
   "export.transcriptHelpPdf":
     "PDF nutzt eine lateinische Standardschrift — für volles Unicode (CJK usw.) besser DOCX verwenden.",
   "export.subtitlesHelp":
     "SRT und VTT verwenden die bearbeitete Timeline (Schnitte angewendet). JSON behält die vollständige Wortliste für den erneuten Import.",
+  "export.subtitlesHelpShortCues":
+    "SRT und VTT verwenden die bearbeitete Timeline (Schnitte angewendet), aufgeteilt in kurze satzweise Untertitel (≤5 s). JSON behält die vollständige Wortliste für den erneuten Import.",
   "export.encodingHelp": "Neucodierung mit ffmpeg.wasm — längere Dateien dauern eine Weile.",
   "export.reexport": "Mit neuesten Änderungen erneut exportieren",
   "export.rendering": "Rendering in deinem Browser…",

lib/i18n/messages/en.ts

@@ -141,13 +141,16 @@ export const en = {
   "export.statCuts": "Cuts",
   "export.statEdited": "Edited",
   "export.includeTimestamps": "Include timestamps",
+  "export.shortCues": "Short cues (≤5s)",
   "export.transcriptHelp": "Speaker-labeled text with cuts removed.",
   "export.transcriptHelpTimestamps":
     "Speaker-labeled text with cuts removed. Each turn starts with its edited-timeline time.",
   "export.transcriptHelpPdf":
     "PDF uses a standard Latin font — prefer DOCX for full Unicode (CJK, etc.).",
   "export.subtitlesHelp":
     "SRT and VTT use the edited timeline (cuts applied). JSON keeps the full word list for re-import.",
+  "export.subtitlesHelpShortCues":
+    "SRT and VTT use the edited timeline (cuts applied), split into short sentence-sized cues (≤5s). JSON keeps the full word list for re-import.",
   "export.encodingHelp": "Re-encoding with ffmpeg.wasm — longer files take a while.",
   "export.reexport": "Re-export with latest edits",
   "export.rendering": "Rendering in your browser…",

lib/i18n/messages/es.ts

@@ -140,13 +140,16 @@ export const es: Record<MessageKey, string> = {
   "export.statCuts": "Cortes",
   "export.statEdited": "Editado",
   "export.includeTimestamps": "Incluir marcas de tiempo",
+  "export.shortCues": "Subtítulos cortos (≤5 s)",
   "export.transcriptHelp": "Texto con etiquetas de hablante y cortes eliminados.",
   "export.transcriptHelpTimestamps":
     "Texto con etiquetas de hablante y cortes eliminados. Cada turno empieza con su tiempo en la línea de tiempo editada.",
   "export.transcriptHelpPdf":
     "PDF usa una fuente latina estándar — preferir DOCX para Unicode completo (CJK, etc.).",
   "export.subtitlesHelp":
     "SRT y VTT usan la línea de tiempo editada (con cortes aplicados). JSON conserva la lista completa de palabras para reimportar.",
+  "export.subtitlesHelpShortCues":
+    "SRT y VTT usan la línea de tiempo editada (con cortes aplicados), divididos en subtítulos cortos por frase (≤5 s). JSON conserva la lista completa de palabras para reimportar.",
   "export.encodingHelp": "Recodificando con ffmpeg.wasm — los archivos largos tardan un poco.",
   "export.reexport": "Reexportar con las últimas ediciones",
   "export.rendering": "Renderizando en tu navegador…",

lib/i18n/messages/fr.ts

@@ -140,13 +140,16 @@ export const fr: Record<MessageKey, string> = {
   "export.statCuts": "Coupes",
   "export.statEdited": "Monté",
   "export.includeTimestamps": "Inclure les horodatages",
+  "export.shortCues": "Sous-titres courts (≤5 s)",
   "export.transcriptHelp": "Texte avec étiquettes de locuteur et coupes retirées.",
   "export.transcriptHelpTimestamps":
     "Texte avec étiquettes de locuteur et coupes retirées. Chaque tour commence par son temps sur la timeline montée.",
   "export.transcriptHelpPdf":
     "Le PDF utilise une police latine standard — préférez DOCX pour l’Unicode complet (CJK, etc.).",
   "export.subtitlesHelp":
     "SRT et VTT utilisent la timeline montée (coupes appliquées). JSON conserve la liste complète des mots pour une réimportation.",
+  "export.subtitlesHelpShortCues":
+    "SRT et VTT utilisent la timeline montée (coupes appliquées), découpés en sous-titres courts par phrase (≤5 s). JSON conserve la liste complète des mots pour une réimportation.",
   "export.encodingHelp": "Réencodage avec ffmpeg.wasm — les fichiers longs prennent un moment.",
   "export.reexport": "Réexporter avec les dernières modifications",
   "export.rendering": "Rendu dans votre navigateur…",

lib/i18n/messages/ja.ts

@@ -140,13 +140,16 @@ export const ja: Record<MessageKey, string> = {
   "export.statCuts": "カット",
   "export.statEdited": "編集後",
   "export.includeTimestamps": "タイムスタンプを含める",
+  "export.shortCues": "短い字幕（≤5秒）",
   "export.transcriptHelp": "話者ラベル付きテキスト。カット部分は除外されます。",
   "export.transcriptHelpTimestamps":
     "話者ラベル付きテキスト。カット部分は除外され、各発話は編集後タイムラインの時刻で始まります。",
   "export.transcriptHelpPdf":
     "PDF はラテン系の標準フォントを使います。CJK など完全な Unicode には DOCX を推奨します。",
   "export.subtitlesHelp":
     "SRT と VTT は編集後のタイムライン（カット適用済み）を使用します。JSON は再インポート用に完全な単語リストを保持します。",
+  "export.subtitlesHelpShortCues":
+    "SRT と VTT は編集後のタイムライン（カット適用済み）を使い、短い文単位の字幕（≤5秒）に分割します。JSON は再インポート用に完全な単語リストを保持します。",
   "export.encodingHelp": "ffmpeg.wasm で再エンコード中 — 長いファイルは時間がかかります。",
   "export.reexport": "最新の編集で再書き出し",
   "export.rendering": "ブラウザでレンダリング中…",

lib/i18n/messages/ko.ts

@@ -140,13 +140,16 @@ export const ko: Record<MessageKey, string> = {
   "export.statCuts": "컷",
   "export.statEdited": "편집본",
   "export.includeTimestamps": "타임스탬프 포함",
+  "export.shortCues": "짧은 자막 (≤5초)",
   "export.transcriptHelp": "화자 라벨이 포함된 텍스트이며 컷한 내용은 제거됩니다.",
   "export.transcriptHelpTimestamps":
     "화자 라벨이 포함된 텍스트이며 컷한 내용은 제거됩니다. 각 발화는 편집된 타임라인 시각으로 시작합니다.",
   "export.transcriptHelpPdf":
     "PDF는 표준 라틴 글꼴을 사용합니다. 완전한 유니코드(CJK 등)에는 DOCX를 권장합니다.",
   "export.subtitlesHelp":
     "SRT와 VTT는 편집된 타임라인(컷 적용)을 사용합니다. JSON은 다시 가져오기 위해 전체 단어 목록을 유지합니다.",
+  "export.subtitlesHelpShortCues":
+    "SRT와 VTT는 편집된 타임라인(컷 적용)을 사용하며 짧은 문장 단위 자막(≤5초)으로 나눕니다. JSON은 다시 가져오기 위해 전체 단어 목록을 유지합니다.",
   "export.encodingHelp": "ffmpeg.wasm으로 다시 인코딩 중 — 긴 파일은 시간이 걸립니다.",
   "export.reexport": "최신 편집으로 다시 내보내기",
   "export.rendering": "브라우저에서 렌더링 중…",

lib/i18n/messages/pt.ts

@@ -140,13 +140,16 @@ export const pt: Record<MessageKey, string> = {
   "export.statCuts": "Cortes",
   "export.statEdited": "Editado",
   "export.includeTimestamps": "Incluir marcas de tempo",
+  "export.shortCues": "Legendas curtas (≤5 s)",
   "export.transcriptHelp": "Texto com rótulos de falante e cortes removidos.",
   "export.transcriptHelpTimestamps":
     "Texto com rótulos de falante e cortes removidos. Cada turno começa com o tempo na linha do tempo editada.",
   "export.transcriptHelpPdf":
     "PDF usa uma fonte latina padrão — prefira DOCX para Unicode completo (CJK etc.).",
   "export.subtitlesHelp":
     "SRT e VTT usam a linha do tempo editada (com cortes aplicados). JSON conserva a lista completa de palavras para reimportar.",
+  "export.subtitlesHelpShortCues":
+    "SRT e VTT usam a linha do tempo editada (com cortes aplicados), divididos em legendas curtas por frase (≤5 s). JSON conserva a lista completa de palavras para reimportar.",
   "export.encodingHelp": "Recodificando com ffmpeg.wasm — arquivos longos demoram um pouco.",
   "export.reexport": "Reexportar com as últimas edições",
   "export.rendering": "Renderizando no seu navegador…",

lib/i18n/messages/zh-CN.ts

@@ -142,13 +142,16 @@ export const zhCN: Record<MessageKey, string> = {
   "export.statCuts": "剪除",
   "export.statEdited": "成片",
   "export.includeTimestamps": "包含时间戳",
+  "export.shortCues": "短字幕（≤5 秒）",
   "export.transcriptHelp": "带说话人标签的文本，已移除剪除内容。",
   "export.transcriptHelpTimestamps":
     "带说话人标签的文本，已移除剪除内容。每段以成片时间轴上的时间开头。",
   "export.transcriptHelpPdf":
     "PDF 使用标准拉丁字体 — 完整 Unicode（如中日韩）请优先选择 DOCX。",
   "export.subtitlesHelp":
     "SRT 和 VTT 使用已应用剪除的成片时间轴；JSON 保留完整词表以便重新导入。",
+  "export.subtitlesHelpShortCues":
+    "SRT 和 VTT 使用已应用剪除的成片时间轴，并拆成短句字幕（≤5 秒）。JSON 保留完整词表以便重新导入。",
   "export.encodingHelp": "使用 ffmpeg.wasm 重新编码，较长文件需要更多时间。",
   "export.reexport": "按最新编辑重新导出",
   "export.rendering": "正在浏览器中渲染…",

lib/i18n/messages/zh-TW.ts

@@ -140,13 +140,16 @@ export const zhTW: Record<MessageKey, string> = {
   "export.statCuts": "剪除",
   "export.statEdited": "成片",
   "export.includeTimestamps": "包含時間戳",
+  "export.shortCues": "短字幕（≤5 秒）",
   "export.transcriptHelp": "帶有說話人標籤的文字，已移除剪除內容。",
   "export.transcriptHelpTimestamps":
     "帶有說話人標籤的文字，已移除剪除內容。每段以編輯後時間軸上的時間開頭。",
   "export.transcriptHelpPdf":
     "PDF 使用標準拉丁字型 — 完整 Unicode（如中日韓）請優先選擇 DOCX。",
   "export.subtitlesHelp":
     "SRT 和 VTT 使用已套用剪除的編輯後時間軸。JSON 保留完整詞表以便重新匯入。",
+  "export.subtitlesHelpShortCues":
+    "SRT 和 VTT 使用已套用剪除的編輯後時間軸，並拆成短句字幕（≤5 秒）。JSON 保留完整詞表以便重新匯入。",
   "export.encodingHelp": "使用 ffmpeg.wasm 重新編碼 — 較長的檔案需要一些時間。",
   "export.reexport": "以最新編輯重新匯出",
   "export.rendering": "正在瀏覽器中算出…",