diff --git a/components/SmartChatBox/InputBar.tsx b/components/SmartChatBox/InputBar.tsx
index ea3cde8..0f70fe0 100644
--- a/components/SmartChatBox/InputBar.tsx
+++ b/components/SmartChatBox/InputBar.tsx
@@ -268,7 +268,7 @@ export function InputBar({ onSend, setVideoPreview, initialVideoUrl, initialVide
             <motion.div layout key="text-input" className="flex-1 flex">
               <textarea
                 ref={textareaRef}
-                placeholder="输入文字…"
+                placeholder="Describe your idea..."
                 className="w-full pl-2 pr-2 py-4 rounded-2 leading-4 text-sm border-none bg-transparent text-white placeholder:text-white/[0.40] focus:outline-none resize-none min-h-[48px] max-h-[120px] overflow-y-auto"
                 rows={1}
                 value={text}
diff --git a/components/SmartChatBox/SmartChatBox.tsx b/components/SmartChatBox/SmartChatBox.tsx
index 1253216..a9fae09 100644
--- a/components/SmartChatBox/SmartChatBox.tsx
+++ b/components/SmartChatBox/SmartChatBox.tsx
@@ -175,13 +175,6 @@ export default function SmartChatBox({
             <span className="w-2 h-2 bg-gray-400 rounded-full animate-bounce"></span>
           </div>
         )}
-        
-        {/* Error message */}
-        {error && (
-          <div className="text-red-500 text-center py-2 text-sm">
-            {error.message}
-          </div>
-        )}
 
         {/* Back to latest button */}
         {isViewingHistory && !isAtBottom && (
diff --git a/components/ui/shot-tab-content.tsx b/components/ui/shot-tab-content.tsx
index 2ded065..7a1095e 100644
--- a/components/ui/shot-tab-content.tsx
+++ b/components/ui/shot-tab-content.tsx
@@ -63,15 +63,16 @@ export const ShotTabContent = forwardRef<
   const [updateData, setUpdateData] = useState<VideoSegmentEntity[]>([]);
 
   useEffect(() => {
-    console.log('shotTabContent-----shotData', shotData);
-  }, [shotData]);
+    console.log('shotTabContent-----selectedSegment', selectedSegment);
+  }, [selectedSegment]);
 
   useEffect(() => {
-    console.log('-==========shotData===========-', shotData);
+    console.log('-==========shotTabContent===========-', shotData, currentSketchIndex, originalVideos);
     // 只在初始化且有角色数据时执行
     if (isInitialized && shotData.length > 0) {
       setIsInitialized(false);
-      setSelectedSegment(shotData[0]);
+      const defaultSelectIndex = currentSketchIndex >= shotData.length ? 0 : currentSketchIndex;
+      setSelectedSegment(shotData[defaultSelectIndex]);
     }
   }, [shotData, isInitialized]);
 
@@ -118,7 +119,6 @@ export const ShotTabContent = forwardRef<
       // 清空检测状态 和 检测结果
       setScanState('idle');
       setDetections([]);
-      setSelectedSegment(shotData[0]);
     }
   }, [shotData, selectedSegment]);
 
@@ -314,7 +314,7 @@ export const ShotTabContent = forwardRef<
           <HorizontalScroller
             itemWidth={128}
             gap={0}
-            selectedIndex={originalVideos.findIndex(shot => selectedSegment?.videoUrl.some(url => url.video_id === shot.video_id))}
+            selectedIndex={originalVideos.findIndex(shot => selectedSegment?.id === shot.video_id)}
             onItemClick={(i: number) => handleSelectShot(i)}
           >
             {originalVideos.map((shot, index) => (
@@ -322,7 +322,7 @@ export const ShotTabContent = forwardRef<
                 key={shot.video_id || index}
                 className={cn(
                   'relative flex-shrink-0 w-32 aspect-video rounded-lg overflow-hidden cursor-pointer group',
-                  selectedSegment?.videoUrl.some(url => url.video_id === shot.video_id) ? 'ring-2 ring-blue-500' : 'hover:ring-2 hover:ring-blue-500/50'
+                  selectedSegment?.id === shot.video_id ? 'ring-2 ring-blue-500' : 'hover:ring-2 hover:ring-blue-500/50'
                 )}
                 whileHover={{ scale: 1.02 }}
                 whileTap={{ scale: 0.98 }}
@@ -361,11 +361,11 @@ export const ShotTabContent = forwardRef<
           <HorizontalScroller
             itemWidth={'auto'}
             gap={0}
-            selectedIndex={originalVideos.findIndex(shot => selectedSegment?.videoUrl.some(url => url.video_id === shot.video_id))}
+            selectedIndex={originalVideos.findIndex(shot => selectedSegment?.id === shot.video_id)}
             onItemClick={(i: number) => handleSelectShot(i)}
           >
             {originalVideos.map((shot, index) => {
-              const isActive = selectedSegment?.videoUrl.some(url => url.video_id === shot.video_id);
+              const isActive = selectedSegment?.id === shot.video_id;
               return (
                 <motion.div
                   key={shot.video_id || index}
@@ -611,3 +611,5 @@ export const ShotTabContent = forwardRef<
     </div>
   );
 });
+
+ShotTabContent.displayName = 'ShotTabContent';
\ No newline at end of file