fix(cv): resolve infinite page duplication bug caused by playback cursor

run_local.py

@@ -0,0 +1,22 @@
+import cv2
+from pathlib import Path
+from youtube_tab_to_pdf import extract_frames, detect_pattern, extract_unique_scroll, extract_unique_overlay, generate_pdf
+
+video_path = Path("output/サカナクション／新宝島(エレキギターTAB) 難易度★★★ sakanaction shintakarajima.mp4")
+output_pdf = Path("output/shintakarajima_perfect.pdf")
+
+print("1. Extracting frames at 2fps...")
+frames = extract_frames(video_path, fps=2.0)
+
+pattern = detect_pattern(frames)
+print(f"2. Detected Pattern: {pattern}")
+
+if pattern == "overlay":
+    final_chunks = extract_unique_overlay(frames)
+else:
+    final_chunks = extract_unique_scroll(frames)
+
+print(f"3. Generating PDF with {len(final_chunks)} chunks...")
+generate_pdf(final_chunks, output_pdf)
+
+print(f"Done! PDF saved to {output_pdf}")