{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "AI Pro Video Edit Plan 2.1",
  "type": "object",
  "required": ["version", "timeline", "format", "scenes"],
  "properties": {
    "version": {"const": "2.1"},
    "timeline": {
      "type": "object",
      "required": ["path", "sha256", "expected_duration"],
      "properties": {
        "path": {"type": "string"},
        "sha256": {"type": "string", "minLength": 64, "maxLength": 64},
        "expected_duration": {"type": "number", "exclusiveMinimum": 0}
      }
    },
    "format": {
      "type": "object", "required": ["width", "height", "fps"],
      "properties": {"width":{"type":"integer","minimum":360},"height":{"type":"integer","minimum":640},"fps":{"type":"number","minimum":23}}
    },
    "scenes": {
      "type": "array", "minItems": 1,
      "items": {
        "type": "object",
        "required": ["id", "anchor_word_start", "anchor_word_end", "purpose", "visual", "speaker_visible"],
        "properties": {
          "id": {"type":"string"},
          "anchor_word_start": {"type":"integer","minimum":0},
          "anchor_word_end": {"type":"integer","minimum":0},
          "resolved_start": {"type":"number","minimum":0},
          "resolved_end": {"type":"number","minimum":0},
          "source_index": {"type":"integer","minimum":0},
          "purpose": {"type":"string"},
          "spoken_text": {"type":"string"},
          "speaker_visible": {"type":"boolean"},
          "visual": {"enum":["speaker","stock_video","image","split_screen","hyperframes","screen_recording","generated_image"]},
          "asset": {"type":"string"},
          "fit": {"enum":["cover","contain"]},
          "motion": {"enum":["none","slow_push_in","slow_pull_out","pan_left","pan_right","parallax"]},
          "transition_in": {"type":"string"},
          "transition_duration_frames": {"type":"integer","minimum":0,"maximum":30},
          "sfx": {"type":"string"},
          "notes": {"type":"string"}
        }
      }
    }
  }
}