diff --git a/backend/internal/service/provider.go b/backend/internal/service/provider.go
index 7df413967..62e8ba579 100644
--- a/backend/internal/service/provider.go
+++ b/backend/internal/service/provider.go
@@ -15,6 +15,7 @@ import (
 	"net/http"
 	"net/textproto"
 	"net/url"
+	"path/filepath"
 	"strconv"
 	"strings"
 	"time"
@@ -225,8 +226,41 @@ func (s *Service) hydrateProviderMedia(userID string, media *providerMedia, requ
 		if resource.Status != "ready" {
 			return errors.New("任务参考资源尚未上传完成")
 		}
+		// 本地素材自动迁移到 OSS
 		if resource.Provider == "local" {
-			return errors.New("当前 JSON 视频协议的参考素材需要公网可访问地址，请启用 OSS 后重新上传该素材")
+			setting, storageSettingID, useOSS, ossErr := s.activeResourceOSSSetting(userID)
+			if ossErr != nil || !useOSS || setting.Provider != "aliyun" {
+				return errors.New("当前 JSON 视频协议的参考素材需要公网可访问地址，请启用 OSS 后重新上传该素材")
+			}
+			// 读取本地文件并上传到 OSS
+			_, body, readErr := s.OpenResource(userID, resourceID)
+			if readErr != nil {
+				return fmt.Errorf("读取本地素材失败：%w", readErr)
+			}
+			ossKey := ossObjectKey(setting, userID, resource.Kind, filepath.Base(resource.ObjectKey), time.Now())
+			if _, uploadErr := putOSSObject(setting, ossKey, resource.MimeType, resource.Size, body); uploadErr != nil {
+				body.Close()
+				return fmt.Errorf("素材迁移到 OSS 失败：%w", uploadErr)
+			}
+			body.Close()
+			// 更新资源记录
+			resource.Provider = "aliyun"
+			resource.ObjectKey = ossKey
+			resource.Endpoint = setting.Endpoint
+			resource.Bucket = setting.Bucket
+			resource.StorageSettingID = storageSettingID
+			if saveErr := s.repo.SaveResource(resource); saveErr != nil {
+				return fmt.Errorf("更新资源记录失败：%w", saveErr)
+			}
+			// 生成签名 URL
+			signedURL, signErr := signedOSSObjectURL(setting, ossKey, time.Now().Add(providerResourceURLTTL))
+			if signErr != nil {
+				return fmt.Errorf("生成 OSS 签名地址失败：%w", signErr)
+			}
+			media.URL = signedURL
+			media.DataURL = ""
+			media.MimeType = firstNonEmpty(media.MimeType, resource.MimeType)
+			return nil
 		}
 		setting, err := s.ossSettingForResource(userID, resource)
 		if err != nil {
diff --git a/web/src/components/canvas/canvas-active-task-panel.tsx b/web/src/components/canvas/canvas-active-task-panel.tsx
index 9f9365f23..2bb4c0ea6 100644
--- a/web/src/components/canvas/canvas-active-task-panel.tsx
+++ b/web/src/components/canvas/canvas-active-task-panel.tsx
@@ -13,7 +13,7 @@ export function CanvasActiveTaskPanel({ tasks }: { tasks: GenerationTask[] }) {
     const theme = canvasThemes[useThemeStore((state) => state.theme)];
     const reducedMotion = useReducedMotion();
     const [now, setNow] = useState(() => Date.now());
-    const [open, setOpen] = useState(true);
+    const [open, setOpen] = useState(false);
     const [expandedTaskId, setExpandedTaskId] = useState<string | null>(null);
 
     useEffect(() => {