The two numbers the port asked for, both from one capture so nothing
crosses runs.
Title rate, which unit 4 flagged as an assumption and is now measured:
ptcopyright declares alpha 0->255 across t=138..160, 22 units, and the
rising run is 22 frames. So 1.0000 title units per frame, with the step
agreeing independently (255/22 = 11.6 against a measured modal 12). That
also confirms the splash's 1 unit/present on a second screen, which it had
never been checked against.
Leaf rate, anchored on the wrap rather than the endpoint: first drawn at
frame 746, wraps at 1914, so 1168 frames for the declared 600-unit loop =
0.5137 units/frame. This SUPERSEDES unit 3's 0.463, which divided 540 units
by 1167 frames -- but the declared track is stationary from t=540 to t=600,
so that endpoint is where motion stops, not where the loop ends.
So: offset +40 title units (confirmed, and the title rate being 1.000 makes
frames and units interchangeable there), rate 0.514x the title's, within 3%
of exactly one half. leaf_t = 0.514 x (title_t - 40).
Flagging rather than smoothing, as they asked: the port runs the leaf
unscaled at 1.0x where this measures 0.514x, so their sweep should cross
twice too fast -- which a viewer ought to notice alongside the early start,
yet the human reports the animation looks correct. Either "looks correct"
is about the effect rather than its speed, or one of the two measurements
is wrong. My rate rests on a single wrap; a longer title capture giving a
wrap-to-wrap period would settle it.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Jc4pciRArGHfxGGhEbwp5t
fbc008a0ab