retry to increase fps

app.py

@@ -9,7 +9,7 @@ import tempfile
 def extract_waveform_animation(audio_file, window_seconds=5):
     y, sr = librosa.load(audio_file, sr=None)
     duration = librosa.get_duration(y=y, sr=sr)
-    
+    FPS = 30
     fig, ax = plt.subplots()
     line, = ax.plot([], [], lw=2)
     window_length = int(window_seconds * sr)
@@ -27,7 +27,7 @@ def extract_waveform_animation(audio_file, window_seconds=5):
 
     def update(frame):
         # Get current window
-        start = frame * sr
+        start = frame * (sr / FPS)
         end = start + window_length
         window = y[start:end]
         
@@ -40,10 +40,10 @@ def extract_waveform_animation(audio_file, window_seconds=5):
 
     total_frames = int(duration)
     ani = FuncAnimation(fig, update, frames=range(total_frames), 
-                       init_func=init, interval=7, blit=False)
+                       init_func=init, interval=window_seconds, blit=False)
     
     with tempfile.NamedTemporaryFile(delete=False, suffix='.mp4') as tmpfile:
-        ani.save(tmpfile.name, writer='ffmpeg', fps=1)
+        ani.save(tmpfile.name, writer='ffmpeg', fps=FPS)
         video_path = tmpfile.name
     
     return video_path