Adding fix to the logo pause narration

tests/test_chunking_v2.py

@@ -134,10 +134,44 @@ def test_video():
     check("full render includes bg with no seek", bg3 is not None and bg3.skip_override is None)
 
 
+def test_pause_cutscene_chunk_ownership():
+    # A pause_narration cutscene must live WHOLLY in the chunk where it starts: its
+    # end = start + pause_narration overshoots the pre-pause timeline, so it must not be
+    # truncated by range_end nor duplicated into the next chunk (the video6 double-freeze
+    # / one-frame-logo bug).
+    print("pause cutscene chunk ownership:")
+    cutouts = {"fullscreen": CutoutDefinition(x=0, y=0, height=1080, width=1920)}
+    videos = {
+        "logo": VideoSource(source_file="logo.mov", cutout="fullscreen", layer="above",
+                            duration=18.0, pause_narration=18.0),
+    }
+    slides = {f"S{i}": SlideDefinition(image=f"S{i}.png", type="slide") for i in range(1, 6)}
+    markers = [MarkerTiming(marker_id=f"S{i}", timestamp=(i - 1) * 30.0, context="", confidence=1.0)
+               for i in range(1, 6)]
+    # Cutscene triggers at t=100 (between S4=90 and S5=120). Its end = 100+18 = 118.
+    markers.append(MarkerTiming(marker_id="vftp:logo", timestamp=100.0, context="", confidence=1.0))
+    total = 200.0
+
+    # Owning chunk [90, 110): starts inside it. End must NOT be clamped to 110 → full 18s.
+    evs, _ = _extract_video_events(markers, videos, cutouts, slides, total, time_range=(90.0, 110.0))
+    lg = next((e for e in evs if e.video_id == "logo"), None)
+    check("cutscene INCLUDED in the chunk it starts in", lg is not None)
+    if lg is not None:
+        check("cutscene end NOT clamped to range_end (full pause length)",
+              abs((lg.end_time - lg.start_time) - 18.0) < 1e-6,
+              f"duration={lg.end_time - lg.start_time}")
+
+    # Next chunk [110, 200): the cutscene started earlier → must be EXCLUDED (no dupe freeze).
+    evs2, _ = _extract_video_events(markers, videos, cutouts, slides, total, time_range=(110.0, 200.0))
+    check("cutscene EXCLUDED from the next chunk (no duplicate freeze)",
+          not any(e.video_id == "logo" for e in evs2))
+
+
 if __name__ == "__main__":
     test_audio()
     test_crossfade_phase()
     test_video()
+    test_pause_cutscene_chunk_ownership()
     print()
     if _fails:
         print(f"FAILED: {len(_fails)} check(s): {', '.join(_fails)}")