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app.py

@@ -140,8 +140,11 @@ def run_session() -> str:
             time.sleep(POLL_INTERVAL)
             continue
 
-        frames = [_decode_jpeg_to_tensor(b) for b in buffer[:need]]
-        buffer = buffer[need:]
+        # Low latency: edit the FRESHEST frames and drop any backlog that piled
+        # up during the previous chunk's compute, so the output tracks "now".
+        chunk_bytes = buffer[-need:]
+        buffer = []
+        frames = [_decode_jpeg_to_tensor(b) for b in chunk_bytes]
         vid = _frames_to_video_tensor(frames)
 
         t0 = time.time()