diff --git a/src/main/export-service.ts b/src/main/export-service.ts
index 56252a8..7db4939 100644
--- a/src/main/export-service.ts
+++ b/src/main/export-service.ts
@@ -584,6 +584,19 @@ const detectAssetExtension = (buffer: Buffer): string | null => {
     return 'webp'
   return null
 }
+const htmlArchiveStickerResourceIsValid = async (
+  outputDir: string,
+  value?: string
+): Promise<boolean> => {
+  const filePath = htmlArchiveResourcePath(outputDir, value)
+  if (!filePath) return false
+  try {
+    return detectAssetExtension(await fs.readFile(filePath)) !== null
+  } catch (error) {
+    if ((error as NodeJS.ErrnoException).code === 'ENOENT') return false
+    throw error
+  }
+}
 async function readAvatarAsset(
   source: string
 ): Promise<{ extension: string; buffer: Buffer } | null> {
@@ -1338,12 +1351,28 @@ async function runSingleExport(
         const reusableImageQuality =
           previous?.exportMediaQuality === 'original' ||
           (request.preferOriginal === false && previous?.exportMediaQuality === 'thumbnail')
+        let reusableMediaExists = false
+        if (reusableMediaType && previous?.exportMediaUrl) {
+          reusableMediaExists = await resourceExists(previous.exportMediaUrl)
+          if (
+            reusableMediaExists &&
+            reusableMediaType === 'sticker' &&
+            !(await htmlArchiveStickerResourceIsValid(outputDir, previous.exportMediaUrl))
+          ) {
+            reusableMediaExists = false
+            resourceExistence.set(previous.exportMediaUrl, Promise.resolve(false))
+            delete previous.exportMediaUrl
+            delete previous.exportMediaType
+            delete previous.exportMediaName
+            delete previous.exportMediaQuality
+          }
+        }
         if (
           reusableMediaType &&
           previous?.exportMediaUrl &&
           (!previous.exportMediaType || previous.exportMediaType === reusableMediaType) &&
           (reusableMediaType !== 'image' || reusableImageQuality) &&
-          (await resourceExists(previous.exportMediaUrl))
+          reusableMediaExists
         ) {
           message.exportMediaUrl = previous.exportMediaUrl
           message.exportMediaType = reusableMediaType
diff --git a/tests/unit/voice-service.test.ts b/tests/unit/voice-service.test.ts
index 5e4bb53..7565f16 100644
--- a/tests/unit/voice-service.test.ts
+++ b/tests/unit/voice-service.test.ts
@@ -2,6 +2,29 @@ import { describe, expect, it, vi } from 'vitest'
 import { VoiceService } from '../../src/main/voice-service'
 
 describe('VoiceService batch lookup', () => {
+  it('writes the decoded sample rate and duration into batch WAV output', async () => {
+    const getVoiceDataBatch = vi.fn().mockResolvedValue([{ success: true, hex: '0102' }])
+    const service = new VoiceService({ getVoiceDataBatch } as never)
+    const decoder = (service as unknown as {
+      decoderRegistry: { decode: ReturnType<typeof vi.fn> }
+    }).decoderRegistry
+    vi.spyOn(decoder, 'decode').mockResolvedValue({
+      pcm: Buffer.alloc(16_000 * 2),
+      sampleRate: 16_000,
+      channels: 1
+    })
+
+    const [result] = await service.resolveVoices([
+      { sessionId: 'session', localId: 10, createTime: 100, svrId: '1000' }
+    ])
+
+    expect(result.success).toBe(true)
+    const wav = Buffer.from(result.data!, 'base64')
+    expect(wav.readUInt32LE(24)).toBe(16_000)
+    expect(wav.readUInt16LE(22)).toBe(1)
+    expect((wav.length - 44) / (wav.readUInt32LE(24) * wav.readUInt16LE(22) * 2)).toBe(1)
+  })
+
   it('retries failed batch entries with the compatible single-item lookup', async () => {
     const getVoiceDataBatch = vi.fn().mockResolvedValue([
       { success: false, error: '获取语音数据失败' },