diff --git a/local-tool/frontend/src/components/camera/source-selector.tsx b/local-tool/frontend/src/components/camera/source-selector.tsx
index a4bf285..8b43473 100644
--- a/local-tool/frontend/src/components/camera/source-selector.tsx
+++ b/local-tool/frontend/src/components/camera/source-selector.tsx
@@ -239,9 +239,15 @@ export function SourceSelector({ deviceId }: SourceSelectorProps) {
                         {isUploading ? t('common.loading') : t('common.start')}
                       </Button>
                     </div>
-                    <p className="text-xs text-muted-foreground">
-                      {t('camera.urlHelpText')}
-                    </p>
+                    {isUploading ? (
+                      <p className="text-xs text-amber-600 animate-pulse">
+                        正在解析影片連結，YouTube 影片可能需要 10-30 秒，請耐心等待...
+                      </p>
+                    ) : (
+                      <p className="text-xs text-muted-foreground">
+                        {t('camera.urlHelpText')}
+                      </p>
+                    )}
                   </div>
                 )}
               </div>