{
  "captured_at": "2026-10-12",
  "capture": {
    "duration_seconds": 10,
    "width": 1920,
    "height": 1080,
    "fps": 30,
    "frames": 300,
    "kind": "Existing encoded outputs recorded on the instance before Internet transport; replayed frame by frame in the real UI with recorded state and cut sequence",
    "viewers": [
      "Program preview: PVW, PGM and eight scene slots",
      "Program dirty with four downstream keys"
    ],
    "actions": "Direct cuts only; no fade or media wipe",
    "source_media": "Generated per-source test patterns and live Chromium graphics",
    "native_program": "mixer-pgm-instance-1080p30.mp4 (original H.264 bitstream, includes preroll and tail)",
    "validation": {
      "native_rtp_frame_interval_ticks": 3000,
      "rtp_clock_hz": 90000,
      "rtp_packet_gaps": 0,
      "ticker_frame_pairs": 299,
      "ticker_step_px": -4,
      "cut_frames": [
        31,
        74,
        119,
        164,
        212,
        257
      ],
      "new_program_missed_deadlines": 0,
      "new_aux_missed_deadlines": 0,
      "new_aux_output_drops": 0
    }
  },
  "configuration": {
    "gpu": "NVIDIA L4",
    "vcpus": 16,
    "profile": "nvidia_l4_cuarray",
    "canvas": {
      "width": 1920,
      "height": 1080,
      "fps": 30,
      "format": "nv12"
    },
    "inputs": {
      "total": 192,
      "nvdec": 105,
      "browser_scene_sources": 36,
      "raw_nv12": 47,
      "browser_keys": 4,
      "catalogue_sources": 188
    },
    "scenes": 256,
    "outputs": {
      "total": 24,
      "program": 1,
      "clean": 1,
      "aux": 22
    },
    "dsk": [
      "lower_third",
      "ticker",
      "bug_left",
      "bug_right"
    ]
  },
  "scope": "Observed configuration and short UI demonstration. Program, preview and key states restored after capture; no setup or service changes."
}