set default interval to 3s

app.py

@@ -115,7 +115,7 @@ def caption_frame(frame):
 st.title("🎥 Real-Time Camera Captioning with SmolVLM2 (CPU)")
 
 interval_ms = st.slider(
-    "Caption every N ms", min_value=100, max_value=10000, value=1000, step=100
+    "Caption every N ms", min_value=100, max_value=10000, value=3000, step=100
 )
 
 RTC_CONFIG = RTCConfiguration({
@@ -133,7 +133,6 @@ class CaptionProcessor(VideoProcessorBase):
         now = time.time()
         if now - self.last_time >= self.interval:
             self.last_time = now
-            print("DEBUG ▶ CaptionProcessor.recv: time reached, generating caption")
             self.caption = caption_frame(img)
         return av.VideoFrame.from_ndarray(img, format="bgr24")