diff --git a/.claude/skills/ui-ux-pro-max/scripts/__pycache__/core.cpython-312.pyc b/.claude/skills/ui-ux-pro-max/scripts/__pycache__/core.cpython-312.pyc
deleted file mode 100644
index 39222d1a1a..0000000000
Binary files a/.claude/skills/ui-ux-pro-max/scripts/__pycache__/core.cpython-312.pyc and /dev/null differ
diff --git a/frontend/app/web-gold/src/views/kling/stores/useDigitalHumanStore.ts b/frontend/app/web-gold/src/views/kling/stores/useDigitalHumanStore.ts
index a16035dad7..ca4e77af0a 100644
--- a/frontend/app/web-gold/src/views/kling/stores/useDigitalHumanStore.ts
+++ b/frontend/app/web-gold/src/views/kling/stores/useDigitalHumanStore.ts
@@ -70,6 +70,9 @@ export const useDigitalHumanStore = defineStore('digitalHuman', () => {
   /** 视频预览URL */
   const videoPreviewUrl = ref('')
 
+  /** 素材库视频的签名URL（用于识别API，不用于播放） */
+  let signedVideoUrl = ''
+
   /** 错误信息 */
   const error = ref('')
 
@@ -278,7 +281,19 @@ export const useDigitalHumanStore = defineStore('digitalHuman', () => {
       if (urlRes.code !== 0 || !urlRes.data) {
         throw new Error(urlRes.msg || '获取播放链接失败')
       }
-      videoPreviewUrl.value = urlRes.data
+      // 保存签名URL用于识别API
+      signedVideoUrl = urlRes.data
+
+      // 下载视频到本地生成blob URL，确保浏览器能正常播放
+      videoStep.value = 'uploading'
+      const response = await fetch(urlRes.data)
+      if (!response.ok) throw new Error('视频下载失败')
+      const blob = await response.blob()
+      // 释放旧的blob URL
+      if (videoPreviewUrl.value?.startsWith('blob:')) {
+        URL.revokeObjectURL(videoPreviewUrl.value)
+      }
+      videoPreviewUrl.value = URL.createObjectURL(blob)
     } catch (err: any) {
       videoStep.value = 'error'
       error.value = err.message || '获取播放链接失败'
@@ -350,8 +365,8 @@ export const useDigitalHumanStore = defineStore('digitalHuman', () => {
 
   /** 识别已存在的视频 */
   async function recognizeExistingVideo(video: Video): Promise<IdentifyData> {
-    // 使用已获取的带签名预览URL
-    return performFaceRecognition(video.id, videoPreviewUrl.value, false)
+    // 使用签名URL调用识别API（blob URL不可被外部API访问）
+    return performFaceRecognition(video.id, signedVideoUrl, false)
   }
 
   /** 执行人脸识别 */
@@ -564,6 +579,7 @@ export const useDigitalHumanStore = defineStore('digitalHuman', () => {
     videoFile.value = null
     selectedVideo.value = null
     videoPreviewUrl.value = ''
+    signedVideoUrl = ''
     videoSelectorVisible.value = false
 
     resetProcess()
diff --git a/yudao-module-tik/src/main/java/cn/iocoder/yudao/module/tik/file/service/TikUserFileServiceImpl.java b/yudao-module-tik/src/main/java/cn/iocoder/yudao/module/tik/file/service/TikUserFileServiceImpl.java
index 52c88f2251..f697fbb712 100644
--- a/yudao-module-tik/src/main/java/cn/iocoder/yudao/module/tik/file/service/TikUserFileServiceImpl.java
+++ b/yudao-module-tik/src/main/java/cn/iocoder/yudao/module/tik/file/service/TikUserFileServiceImpl.java
@@ -339,9 +339,7 @@ public class TikUserFileServiceImpl implements TikUserFileService {
         }
 
         // 视频播放URL不缓存，每次都生成新的签名URL（使用 filePath 而非 fileUrl，避免域名匹配问题）
-        // 根据文件扩展名推断 Content-Type，确保浏览器 <video> 元素能正确渲染
-        String contentType = java.net.URLConnection.guessContentTypeFromName(file.getFilePath());
-        return fileApi.presignGetUrl(file.getFilePath(), PRESIGN_URL_EXPIRATION_SECONDS, contentType);
+        return fileApi.presignGetUrl(file.getFilePath(), PRESIGN_URL_EXPIRATION_SECONDS);
     }
 
     @Override
@@ -356,8 +354,7 @@ public class TikUserFileServiceImpl implements TikUserFileService {
         }
 
         // 音频播放URL不缓存，每次都生成新的签名URL（使用 filePath 而非 fileUrl，避免域名匹配问题）
-        String contentType = java.net.URLConnection.guessContentTypeFromName(file.getFilePath());
-        return fileApi.presignGetUrl(file.getFilePath(), PRESIGN_URL_EXPIRATION_SECONDS, contentType);
+        return fileApi.presignGetUrl(file.getFilePath(), PRESIGN_URL_EXPIRATION_SECONDS);
     }
 
     @Override