diff --git a/danmaku_workflow.py b/danmaku_workflow.py
index a5a5abd..a59fcc6 100644
--- a/danmaku_workflow.py
+++ b/danmaku_workflow.py
@@ -475,6 +475,9 @@ class WorkerThread(QThread):
         duration = self.get_video_real_duration(file)
         current_sec = 0
         while current_sec < duration:
+            if (current_sec + VIDEO_CLIP_OVERFLOW_SEC * 2) > duration:
+                print("[-]Less than 2 overflow sec, skip")
+                break
             current_dt = (create_dt + timedelta(seconds=current_sec)).strftime("%Y%m%d_%H%M_")
             print("CUR_DT", current_dt)
             print("BIAS_T", current_sec)
@@ -559,6 +562,7 @@ def danmaku_to_subtitle(file: Union[os.PathLike[str], str], time_shift: float):
     process.wait()
     return new_subtitle_name
 
+
 # Create a set of arguments which make a ``subprocess.Popen`` (and
 # variants) call work with or without Pyinstaller, ``--noconsole`` or
 # not, on Windows and Linux. Typical use::