{
  "id": "scene_timeline_demo",
  "name": "Scene Timeline Demo",
  "description": "Manual two-fader show-clock scaffold mirroring the shape of what create_scene_timeline (Layer-1, v0.7.0) builds: a Timer CHOP playhead and a segments table DAT (intro / drop / outro) are provided as helper scaffolding, plus a chained two-crossfader stack (fadeAB → fadeBC) over three scene sources. Important: the playhead and segments table are NOT auto-wired to fadeAB.cross / fadeBC.cross — RecipeSchema parameters take constants only, no expressions. After import, the artist drives the two Fade knobs manually (live or via exposed controls), or sets fadeAB.cross / fadeBC.cross expressions referencing op('playhead_null')['timer_fraction'] and the segments DAT. Offline-validated against RecipeSchema; live cook-check UNVERIFIED pending TD run.",
  "tags": ["timeline", "scenes", "show-clock", "crossfade", "performable", "automation"],
  "difficulty": "intermediate",
  "td_version_min": "2022",
  "nodes": [
    {
      "name": "playhead",
      "type": "timerCHOP",
      "parameters": {
        "length": 30,
        "lengthunits": "seconds",
        "cyclelimit": 0,
        "cue": 1,
        "play": 1
      },
      "comment": "Show-clock playhead. 30s total, looping. cycleLimit=0 → no auto-stop."
    },
    {
      "name": "playhead_null",
      "type": "nullCHOP",
      "comment": "Stable channel ref for downstream bind_to_channel ('timer_seconds', 'timer_fraction')."
    },
    {
      "name": "segments",
      "type": "tableDAT",
      "comment": "Declarative segments: idx,name,cue,start,end,morph_in,slot. Matches tdmcp_scenes shape from create_scene_timeline."
    },
    {
      "name": "sceneA",
      "type": "noiseTOP",
      "parameters": { "period": 8, "mono": 1 },
      "comment": "Scene A (intro): slow mono noise field."
    },
    {
      "name": "sceneB",
      "type": "rampTOP",
      "parameters": { "type": "radial" },
      "comment": "Scene B (drop): radial ramp."
    },
    {
      "name": "sceneC",
      "type": "constantTOP",
      "parameters": { "colorr": 0.05, "colorg": 0.02, "colorb": 0.12, "alpha": 1.0 },
      "comment": "Scene C (outro): deep violet hold."
    },
    {
      "name": "fadeAB",
      "type": "crossTOP",
      "parameters": { "cross": 0 },
      "comment": "Scene A→B crossfader. Driven manually from the playhead's t_norm via the Cross knob."
    },
    {
      "name": "fadeBC",
      "type": "crossTOP",
      "parameters": { "cross": 0 },
      "comment": "Scene B→C crossfader. Chained after fadeAB."
    },
    {
      "name": "out1",
      "type": "nullTOP",
      "comment": "Final scene timeline output."
    }
  ],
  "connections": [
    { "from": "playhead", "to": "playhead_null" },
    { "from": "sceneA", "to": "fadeAB", "to_input": 0 },
    { "from": "sceneB", "to": "fadeAB", "to_input": 1 },
    { "from": "fadeAB", "to": "fadeBC", "to_input": 0 },
    { "from": "sceneC", "to": "fadeBC", "to_input": 1 },
    { "from": "fadeBC", "to": "out1" }
  ],
  "parameters": [],
  "controls": [
    {
      "name": "Play",
      "type": "toggle",
      "default": 1,
      "bind_to": ["playhead.play"]
    },
    {
      "name": "Rate",
      "type": "float",
      "min": 0.1,
      "max": 4.0,
      "default": 1.0,
      "bind_to": ["playhead.speed"]
    },
    {
      "name": "Fade A to B",
      "type": "float",
      "min": 0,
      "max": 1,
      "default": 0,
      "bind_to": ["fadeAB.cross"]
    },
    {
      "name": "Fade B to C",
      "type": "float",
      "min": 0,
      "max": 1,
      "default": 0,
      "bind_to": ["fadeBC.cross"]
    }
  ],
  "preview_description": "A 30-second show-clock scaffold with three scene sources (slow mono noise, radial ramp, deep violet hold) feeding a manual two-crossfader stack — the artist drives the Fade A→B / Fade B→C knobs by hand (or wires them to the playhead) to blend through intro / drop / outro."
}