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edit//cutmap.py

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+"""Shared cut map: source intervals removed, and source->output time mapping."""
+
+# (start, end) in SOURCE seconds to REMOVE (dead-air / loading / thinking pauses)
+REMOVED = [
+    (268.92, 269.70),   # "fire this up." pause
+    (271.58, 273.16),   # model "thinking" dead-air (keep a beat, drop the rest)
+    (315.70, 316.60),   # loading pause before "20 tokens per second"
+]
+
+SRC_DURATION = 393.79
+
+
+def keep_segments():
+    """Complement of REMOVED over [0, SRC_DURATION]."""
+    segs = []
+    cur = 0.0
+    for a, b in REMOVED:
+        if a > cur:
+            segs.append((cur, a))
+        cur = b
+    if cur < SRC_DURATION:
+        segs.append((cur, SRC_DURATION))
+    return segs
+
+
+def map_time(t: float) -> float:
+    """Map a SOURCE timestamp to the OUTPUT (post-cut) timeline."""
+    removed_before = 0.0
+    for a, b in REMOVED:
+        if t >= b:
+            removed_before += (b - a)
+        elif t > a:           # inside a removed gap -> clamp to gap start
+            return a - removed_before
+    return t - removed_before
+
+
+def out_duration() -> float:
+    return map_time(SRC_DURATION)
+
+
+if __name__ == "__main__":
+    print("keep segments:", [(round(a, 2), round(b, 2)) for a, b in keep_segments()])
+    print("output duration:", round(out_duration(), 2))