{
  "description": "Combined subtitle ordinals are dense and gap-free across externals, embedded tracks, then downloaded tracks. A track with no sidecar representation keeps its ordinal and is published as burn_in_only without a URL rather than omitted.",
  "session_id": "11111111-1111-4111-8111-111111111111",
  "media_file_id": 42,
  "source": {
    "external_subtitles": [
      {
        "path": "/library/movie.en.srt",
        "language": "eng",
        "format": "srt",
        "title": "English",
        "forced": false,
        "default": false,
        "hearing_impaired": false
      }
    ],
    "subtitle_tracks": [
      {
        "index": 0,
        "language": "eng",
        "codec": "ass",
        "title": "English (Signs)",
        "forced": true,
        "default": false,
        "hearing_impaired": false,
        "external": false
      },
      {
        "index": 1,
        "language": "jpn",
        "codec": "pgs",
        "title": "Japanese",
        "forced": false,
        "default": false,
        "hearing_impaired": false,
        "external": false
      },
      {
        "index": 2,
        "language": "fre",
        "codec": "dvd_subtitle",
        "title": "French",
        "forced": false,
        "default": false,
        "hearing_impaired": false,
        "external": false
      }
    ],
    "downloaded": [
      {
        "CombinedIndex": 0,
        "Codec": "srt",
        "Source": "downloaded",
        "Language": "spa",
        "Label": "Spanish (downloaded)",
        "Forced": false,
        "HearingImpaired": false
      }
    ]
  },
  "inventory": [
    {
      "track_id": "file:42:subtitle:0",
      "combined_index": 0,
      "source": "external",
      "codec": "srt",
      "language": "eng",
      "label": "English",
      "forced": false,
      "default": false,
      "hearing_impaired": false,
      "delivery": "sidecar",
      "url": "/stream/11111111-1111-4111-8111-111111111111/subtitles/0.vtt?file_id=42"
    },
    {
      "track_id": "file:42:subtitle:1",
      "combined_index": 1,
      "source": "embedded",
      "codec": "ass",
      "language": "eng",
      "label": "English (Signs)",
      "forced": true,
      "default": false,
      "hearing_impaired": false,
      "delivery": "sidecar",
      "url": "/stream/11111111-1111-4111-8111-111111111111/subtitles/1.ass?file_id=42",
      "font_bundle_url": "/stream/11111111-1111-4111-8111-111111111111/subtitles/1/fonts?file_id=42"
    },
    {
      "track_id": "file:42:subtitle:2",
      "combined_index": 2,
      "source": "embedded",
      "codec": "pgs",
      "language": "jpn",
      "label": "Japanese",
      "forced": false,
      "default": false,
      "hearing_impaired": false,
      "delivery": "sidecar",
      "url": "/stream/11111111-1111-4111-8111-111111111111/subtitles/2.sup?file_id=42"
    },
    {
      "track_id": "file:42:subtitle:3",
      "combined_index": 3,
      "source": "embedded",
      "codec": "dvd_subtitle",
      "language": "fre",
      "label": "French",
      "forced": false,
      "default": false,
      "hearing_impaired": false,
      "delivery": "burn_in_only"
    },
    {
      "track_id": "file:42:subtitle:4",
      "combined_index": 4,
      "source": "downloaded",
      "codec": "srt",
      "language": "spa",
      "label": "Spanish (downloaded)",
      "forced": false,
      "default": false,
      "hearing_impaired": false,
      "delivery": "sidecar",
      "url": "/stream/11111111-1111-4111-8111-111111111111/subtitles/4.vtt?file_id=42"
    }
  ]
}