{
  "format": "sylpheed.timing/1",

  "keyframe_units_per_second": 60,
  "why": [
    "HANDOFF Q1. The disc says a keyframe is at `t=30`; it does not say what a",
    "`t` is. The unit was MEASURED off the running game, not decoded: a declared",
    "15-unit fade lands on round(255*k/15) for all seven of its samples with k",
    "stepping 2,4,6,8,10,12,14 on seven consecutive submitted frames -- so 2",
    "units per rendered frame -- and the idle title presents at 28.3-28.8 fps,",
    "a 30 Hz game, giving 60 units per second. A second line agrees: the",
    "transition quad is declared black for 12 units, and a capture measured the",
    "pure-black plateau at 0.17-0.23 s, where 12/60 = 0.20 s.",
    "",
    "Expressed as units-per-second rather than seconds-per-unit so the value is",
    "exact rather than a repeating decimal a reader has to recognise.",
    "",
    "DELETE THIS FILE when a field on the disc is found that states the unit.",
    "Nothing here is on the disc."
  ],
  "kind": "measured",
  "source": "/reborn docs/port/HANDOFF.md Q1, docs/re/ui-keyframe-time-unit.md",

  "ramp": "linear",
  "ramp_why": [
    "Also HANDOFF Q1, and part of the same measurement: the fade lands on the",
    "linear value at every one of the seven sampled frames, so there is no ease."
  ],

  "exit_ramp_seconds": null,
  "exit_ramp_why": [
    "NOT SET, deliberately. The last keyframe of every group carries no time --",
    "the disc has no time slot there -- so the duration of the ramp INTO the",
    "exit pose is unknown. HANDOFF Q7 measured the screen fade-out at ~0.4 s,",
    "but that is the transition, which is P3's to author with its own evidence.",
    "P2 plays the timed keyframes and holds; it never plays the exit ramp,",
    "because it would have to invent how long it takes."
  ]
}