diff --git a/app/static/public/js/video.js b/app/static/public/js/video.js
index 067db99..b1a38f6 100644
--- a/app/static/public/js/video.js
+++ b/app/static/public/js/video.js
@@ -1462,7 +1462,7 @@
     isRunning = true;
     startBtn.disabled = true;
     updateMeta();
-    resetOutput();
+    resetOutput(true);
     setStatus('connecting', '连接中');
 
     let taskIds = [];
@@ -1483,7 +1483,7 @@
     }
 
     taskStates = new Map();
-    previewCount = 0;
+    previewCount = videoStage ? videoStage.querySelectorAll('.video-item').length : 0;
     for (const taskId of taskIds) {
       const previewItem = initPreviewSlot();
       setPreviewTitle(previewItem, buildHistoryTitle('generated', previewItem && previewItem.dataset ? previewItem.dataset.index : previewCount));
diff --git a/app/static/public/pages/video.html b/app/static/public/pages/video.html
index 98d87ec..7f0c0dc 100644
--- a/app/static/public/pages/video.html
+++ b/app/static/public/pages/video.html
@@ -318,7 +318,7 @@
   <script src="/static/common/js/pwa.js?v=0.1.1"></script>
   <script src="/static/vendor/ffmpeg/ffmpeg.js?v=0.1.0"></script>
   <script src="/static/vendor/ffmpeg/ffmpeg-util.js?v=0.1.0"></script>
-  <script src="/static/public/js/video.js?v=0.5.24"></script>
+  <script src="/static/public/js/video.js?v=0.5.25"></script>
 </body>
 
 </html>