diff --git a/scripts/nodejs/mixcut_replacements.js b/scripts/nodejs/mixcut_replacements.js
new file mode 100644
index 0000000..9a29a10
--- /dev/null
+++ b/scripts/nodejs/mixcut_replacements.js
@@ -0,0 +1,176 @@
+const fs = require("fs");
+const path = require("path");
+
+const IMAGE_EXT = new Set([".jpg", ".jpeg", ".png", ".webp", ".bmp", ".gif"]);
+
+function isImageFile(filePath) {
+  return IMAGE_EXT.has(path.extname(filePath).toLowerCase());
+}
+
+function listMediaFiles(folderPath) {
+  if (!folderPath || !fs.existsSync(folderPath)) return [];
+  const entries = fs.readdirSync(folderPath, { withFileTypes: true });
+  const files = [];
+  for (const entry of entries) {
+    if (!entry.isFile()) continue;
+    const ext = path.extname(entry.name).toLowerCase();
+    if (
+      [".mp4", ".mov", ".webm", ".mkv", ".m4v", ".avi", ...IMAGE_EXT].includes(ext)
+    ) {
+      files.push(path.join(folderPath, entry.name));
+    }
+  }
+  return files.sort();
+}
+
+function pickFromFolder(selectionMode, folderPath, specifiedPath) {
+  if (selectionMode === "specified" && specifiedPath) {
+    return specifiedPath;
+  }
+  const files = listMediaFiles(folderPath);
+  if (!files.length) return null;
+  if (selectionMode === "sequential") {
+    return files[0];
+  }
+  return files[Math.floor(Math.random() * files.length)];
+}
+
+function buildSubtitleModeReplacements(records, subtitleModeConfig, probeVideoDuration) {
+  const mappings = Array.isArray(subtitleModeConfig?.mappings)
+    ? subtitleModeConfig.mappings
+    : [];
+  const replacements = [];
+
+  for (const mapping of mappings) {
+    if (!mapping?.materialPath || !fs.existsSync(mapping.materialPath)) continue;
+    const indices = Array.isArray(mapping.subtitleIndices)
+      ? mapping.subtitleIndices
+      : [];
+    if (!indices.length || !records.length) continue;
+
+    let minStart = Infinity;
+    let maxEnd = -Infinity;
+    for (const idx of indices) {
+      const record = records[idx];
+      if (!record) continue;
+      const startSec = Number(record.start ?? record.startTime ?? 0) / 1000;
+      const endSec = Number(record.end ?? record.endTime ?? 0) / 1000;
+      minStart = Math.min(minStart, startSec);
+      maxEnd = Math.max(maxEnd, endSec);
+    }
+    if (!Number.isFinite(minStart) || !Number.isFinite(maxEnd)) continue;
+    const duration = maxEnd - minStart;
+    if (duration <= 0) continue;
+
+    const isImage = mapping.isImage ?? isImageFile(mapping.materialPath);
+    const materialDuration = isImage
+      ? duration
+      : probeVideoDuration(mapping.materialPath);
+
+    replacements.push({
+      startTime: minStart,
+      duration,
+      materialPath: mapping.materialPath,
+      materialDuration,
+      materialStartOffset: 0,
+      displayMode: mapping.displayMode || "fullscreen",
+      pipPosition: mapping.pipPosition || "bottom-right",
+      pipSizePercent: mapping.pipSizePercent ?? 30,
+      pipScaleMode: mapping.pipScaleMode || "fit",
+      isImage,
+      originalVideoMinimized: mapping.originalVideoMinimized,
+    });
+  }
+
+  return replacements.sort((a, b) => a.startTime - b.startTime);
+}
+
+function buildFixedModeReplacements(fixedModeConfig, videoDuration, probeVideoDuration) {
+  const replacements = [];
+  if (!fixedModeConfig?.enabled) return replacements;
+
+  const segments = [
+    { key: "opening", reason: "片头" },
+    { key: "middle", reason: "片中" },
+    { key: "ending", reason: "片尾" },
+  ];
+
+  for (const { key, reason } of segments) {
+    const seg = fixedModeConfig[key];
+    if (!seg?.enabled) continue;
+
+    const min = Number(seg.timeRange?.durationMin ?? 2);
+    const max = Number(seg.timeRange?.durationMax ?? 5);
+    let startTime = 0;
+    let duration = max - min;
+    if (key === "middle") {
+      const mid = videoDuration / 2;
+      startTime = Math.max(0, mid + min);
+      duration = Math.min(videoDuration, mid + max) - startTime;
+    } else if (key === "ending") {
+      duration = max - min;
+      startTime = Math.max(0, videoDuration - duration);
+    } else {
+      startTime = min;
+      duration = max - min;
+    }
+    if (duration <= 0 || startTime >= videoDuration) continue;
+
+    const materialPath = pickFromFolder(
+      seg.selectionMode || "random",
+      seg.materialFolderPath,
+      seg.specifiedMaterialPath,
+    );
+    if (!materialPath || !fs.existsSync(materialPath)) continue;
+
+    const isImage = isImageFile(materialPath);
+    replacements.push({
+      startTime,
+      duration,
+      materialPath,
+      materialDuration: isImage ? duration : probeVideoDuration(materialPath),
+      materialStartOffset: 0,
+      displayMode: seg.displayMode || "fullscreen",
+      pipPosition: seg.pipPosition || "bottom-right",
+      pipSizePercent: seg.pipSizePercent ?? 30,
+      pipScaleMode: seg.pipScaleMode || "fit",
+      isImage,
+      originalVideoMinimized: seg.originalVideoMinimized,
+      reason,
+    });
+  }
+
+  return replacements.sort((a, b) => a.startTime - b.startTime);
+}
+
+function buildReplacementsFromMixCutSettings(settings, videoDuration, probeVideoDuration) {
+  if (!settings || typeof settings !== "object" || !settings.enabled) {
+    return [];
+  }
+
+  const mode = settings.mode || "subtitle";
+  let replacements = [];
+
+  if (mode === "subtitle") {
+    const records = Array.isArray(settings.records) ? settings.records : [];
+    replacements = buildSubtitleModeReplacements(
+      records,
+      settings.subtitleModeConfig,
+      probeVideoDuration,
+    );
+  } else if (mode === "fixed" && settings.fixedModeConfig?.enabled) {
+    replacements = buildFixedModeReplacements(
+      settings.fixedModeConfig,
+      videoDuration,
+      probeVideoDuration,
+    );
+  }
+
+  return replacements;
+}
+
+module.exports = {
+  buildReplacementsFromMixCutSettings,
+  buildSubtitleModeReplacements,
+  buildFixedModeReplacements,
+};
diff --git a/scripts/nodejs/subtitle_bgm_generate.js b/scripts/nodejs/subtitle_bgm_generate.js
index 108dda2..7f118f5 100644
--- a/scripts/nodejs/subtitle_bgm_generate.js
+++ b/scripts/nodejs/subtitle_bgm_generate.js
@@ -422,6 +422,16 @@ globalThis.__nodejsMain = async function main(params) {
       srtPath = makeOutputPath("subtitle", "srt");
       fs.writeFileSync(srtPath, buildSrtContent(records, maxChars), "utf8");
 
+      if (p.recognizeOnly) {
+        pipelineNative.deleteFile(audioPath);
+        return {
+          success: true,
+          records,
+          srtPath,
+          message: `字幕识别完成，共 ${records.length} 条`,
+        };
+      }
+
       const { width, height } = probeVideoSize(current);
       const assPath = makeOutputPath("subtitle", "ass");
       fs.writeFileSync(
diff --git a/scripts/nodejs/video_edit_process.js b/scripts/nodejs/video_edit_process.js
index 17e4815..a71c4a9 100644
--- a/scripts/nodejs/video_edit_process.js
+++ b/scripts/nodejs/video_edit_process.js
@@ -8,6 +8,9 @@ const fs = require("fs");
 const path = require("path");
 const os = require("os");
 const { spawnSync } = require("child_process");
+const {
+  buildReplacementsFromMixCutSettings,
+} = require("./mixcut_replacements.js");
 
 const IMAGE_EXT = new Set([".jpg", ".jpeg", ".png", ".webp", ".bmp", ".gif"]);
 
@@ -434,6 +437,14 @@ function normalizeReplacements(raw) {
 
 function pickReplacementsFromSettings(settings, videoDuration) {
   if (!settings || typeof settings !== "object") return [];
+  const fromMixCut = buildReplacementsFromMixCutSettings(
+    settings,
+    videoDuration,
+    probeVideoDuration,
+  );
+  if (fromMixCut.length) {
+    return normalizeReplacements(fromMixCut);
+  }
   if (Array.isArray(settings.replacements) && settings.replacements.length) {
     return normalizeReplacements(settings.replacements);
   }