{
  "version": 1,
  "day": "2026-08-17",
  "count": 35,
  "headcodes": [
    "6V91",
    "6M94",
    "6M79",
    "6G10",
    "6M94",
    "6L10",
    "6E63",
    "6L26",
    "6L26",
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    "6L10",
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    "6E97",
    "6X41",
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    "6D78",
    "6V84",
    "6M45",
    "6M89",
    "6M42",
    "6M01",
    "6C52",
    "6J00",
    "6M91",
    "6S50",
    "6E85",
    "6E67",
    "6L72",
    "6H61",
    "6V55",
    "6M84",
    "6L48",
    "6M73",
    "6B47",
    "6V55"
  ],
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      "key": "6V91_Wingfield",
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      "location": "Wingfield",
      "file": "6V91_Wingfield.mp4",
      "start": 1.4628571428571426,
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    {
      "key": "6M94_Severn_Tunnel",
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      "location": "Severn Tunnel",
      "file": "6M94_Severn_Tunnel.mp4",
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    {
      "key": "6M79_Watford",
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      "file": "6M79_Watford.mp4",
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    {
      "key": "6G10_Wingfield",
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      "location": "Wingfield",
      "file": "6G10_Wingfield.mp4",
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    {
      "key": "6M94_Bredon",
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      "location": "Bredon",
      "file": "6M94_Bredon.mp4",
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    {
      "key": "6L10_St_Albans",
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      "location": "St Albans",
      "file": "6L10_St_Albans.mp4",
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      "key": "6E63_Swinton",
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      "location": "Swinton",
      "file": "6E63_Swinton.mp4",
      "start": 3.0,
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    {
      "key": "6L26_Chesterfield",
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      "key": "6L26_Wingfield",
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      "file": "6L26_Wingfield.mp4",
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    {
      "key": "6C75_Wingfield",
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      "location": "Wingfield",
      "file": "6C75_Wingfield.mp4",
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    {
      "key": "6L10_Barking",
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      "location": "Barking",
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      "key": "6E28_Swinton",
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      "key": "6E97_Derby",
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      "location": "Derby",
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      "key": "6X41_Watford",
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      "key": "6M78_Keighley",
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      "location": "Keighley",
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      "key": "6D78_Doncaster",
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      "location": "Doncaster",
      "file": "6D78_Doncaster.mp4",
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      "key": "6V84_Wigan",
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      "locos": [
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      "location": "Wigan",
      "file": "6V84_Wigan.mp4",
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      "key": "6M45_Watford",
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      "location": "Watford",
      "file": "6M45_Watford.mp4",
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      "key": "6M89_Swinton",
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      "location": "Swinton",
      "file": "6M89_Swinton.mp4",
      "start": 3.0,
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    {
      "key": "6M42_Bredon",
      "headcode": "6M42",
      "locos": [
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      "location": "Bredon",
      "file": "6M42_Bredon.mp4",
      "start": 3.0,
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    {
      "key": "6M01_Chesterfield",
      "headcode": "6M01",
      "locos": [
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      "location": "Chesterfield",
      "file": "6M01_Chesterfield.mp4",
      "start": 3.0,
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    {
      "key": "6C52_Wigan",
      "headcode": "6C52",
      "locos": [
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      ],
      "location": "Wigan",
      "file": "6C52_Wigan.mp4",
      "start": 3.0,
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    {
      "key": "6J00_Banbury",
      "headcode": "6J00",
      "locos": [
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      "location": "Banbury",
      "file": "6J00_Banbury.mp4",
      "start": 3.0,
      "snip": 5.057142857142857,
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      "key": "6M91_Bedford",
      "headcode": "6M91",
      "locos": [
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      ],
      "location": "Bedford",
      "file": "6M91_Bedford.mp4",
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    {
      "key": "6S50_Thankerton",
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      "location": "Thankerton",
      "file": "6S50_Thankerton.mp4",
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      "key": "6E85_Doncaster",
      "headcode": "6E85",
      "locos": [
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      "location": "Doncaster",
      "file": "6E85_Doncaster.mp4",
      "start": 0.0,
      "snip": 3.12,
      "source_duration": 3.12
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    {
      "key": "6E67_Bredon",
      "headcode": "6E67",
      "locos": [
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      "location": "Bredon",
      "file": "6E67_Bredon.mp4",
      "start": 3.0,
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    {
      "key": "6L72_Barking",
      "headcode": "6L72",
      "locos": [
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      "location": "Barking",
      "file": "6L72_Barking.mp4",
      "start": 3.0,
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    {
      "key": "6H61_Wingfield",
      "headcode": "6H61",
      "locos": [
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      "location": "Wingfield",
      "file": "6H61_Wingfield.mp4",
      "start": 3.0,
      "snip": 5.057142857142857,
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    {
      "key": "6V55_Bredon",
      "headcode": "6V55",
      "locos": [
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      ],
      "location": "Bredon",
      "file": "6V55_Bredon.mp4",
      "start": 3.0,
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      "key": "6M84_Thankerton",
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      "location": "Thankerton",
      "file": "6M84_Thankerton.mp4",
      "start": 3.0,
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    {
      "key": "6L48_Watford",
      "headcode": "6L48",
      "locos": [
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      "location": "Watford",
      "file": "6L48_Watford.mp4",
      "start": 3.0,
      "snip": 5.057142857142857,
      "source_duration": 30.038
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    {
      "key": "6M73_Barking",
      "headcode": "6M73",
      "locos": [],
      "location": "Barking",
      "file": "6M73_Barking.mp4",
      "start": 3.0,
      "snip": 5.057142857142857,
      "source_duration": 23.12
    },
    {
      "key": "6B47_Severn_Tunnel",
      "headcode": "6B47",
      "locos": [
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      "location": "Severn Tunnel",
      "file": "6B47_Severn_Tunnel.mp4",
      "start": 3.0,
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    {
      "key": "6V55_Severn_Tunnel",
      "headcode": "6V55",
      "locos": [
        "66727 \"Maritime One\""
      ],
      "location": "Severn Tunnel",
      "file": "6V55_Severn_Tunnel.mp4",
      "start": 3.0,
      "snip": 5.057142857142857,
      "source_duration": 34.2
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  ],
  "built_at": "2026-08-17T20:10:15+00:00",
  "length_mode": "adaptive",
  "target_seconds": 180.0,
  "snip_seconds": 5.057142857142857,
  "start_seconds": 3.0,
  "video": "freight.mp4",
  "url": "/captures/2026-08-17/roundup/freight.mp4"
}