diff --git a/nodes/compute_video_point.py b/nodes/compute_video_point.py
index 5bd9d3a..d4aa267 100644
--- a/nodes/compute_video_point.py
+++ b/nodes/compute_video_point.py
@@ -10,7 +10,8 @@ def validate_time_format(time_str):
 
 def get_duration_wave(audio):
     waveform, sample_rate = audio["waveform"], audio["sample_rate"]
-    return waveform.shape[2] / sample_rate
+    # 防止话说不完
+    return ceil(waveform.shape[2] / sample_rate) + 1
 
 
 class VideoStartPointDurationCompute:
@@ -40,5 +41,5 @@ class VideoStartPointDurationCompute:
         start_sec = (start_dt - datetime(1900, 1, 1)).total_seconds()
         start_point = int(start_sec * fps)
         print("audio duration %.2f s"%get_duration_wave(audio))
-        duration = ceil(get_duration_wave(audio) * fps)
+        duration = get_duration_wave(audio) * fps
         return (start_point, duration,)