Clapper board detection insight overview
Post-production: clapper board detection
Clapper board detection detects clapper boards used during filming that also provides the information detected on the clapper board as metadata, for example, production, roll, scene, take, etc. Clapper board is part of the post-production insights that you can select in the web portal advanced settings when you upload and index the file.
Clapper board use cases
Clapper board detection is most commonly used for post-production editing of visual media.
View the insight JSON with the web portal
Once you have uploaded and indexed a video, insights are available in JSON format for download using the web portal.
- Select the Library tab.
- Select media you want to work with.
- Select Download and the Insights (JSON). The JSON file opens in a new browser tab.
- Look for the key pair described in the example response.
Use the API
- Use the Get Video Index request. We recommend passing
&includeSummarizedInsights=false. - Look for the key pairs described in the example response.
Example responses
This response shows all of the data that come from detecting clapper boards. If you would like to learn more about how clapper boards are used in media production, check out the video from Studio Binder that was indexed for this example.
Clapper board detection
"clapperboards": [
{
"id": 1,
"thumbnailId": "5a3714b9-a52b-4b3e-980a-ddf95c62033d",
"isHeadSlate": true,
"fields": [
{
"title": "camera",
"content": "RJ NICHOLS"
},
{
"title": "date",
"content": "7.30.79 FYT"
},
{
"title": "director",
"content": "RJ NICHOLS"
},
{
"title": "production",
"content": "THE FARMERS DAUGHTERS"
},
{
"title": "roll",
"content": "1"
},
{
"title": "scene",
"content": "4"
},
{
"title": "sound",
"content": "T"
},
{
"title": "take",
"content": "4"
}
],
"instances": [
{
"adjustedStart": "0:00:07.9439122",
"adjustedEnd": "0:00:09.6183643",
"start": "0:00:07.9439122",
"end": "0:00:09.6183643"
}
]
},
{
"id": 2,
"thumbnailId": "6b79c7dd-6d10-43dd-a2ac-c452437ebac7",
"isHeadSlate": true,
"fields": [
{
"title": "camera",
"content": "ELIOT ROCKETT"
},
{
"title": "date",
"content": "BO24"
},
{
"title": "director",
"content": "SARAH POLLEY"
},
{
"title": "roll",
"content": "14151"
},
{
"title": "scene",
"content": "31C 1"
},
{
"title": "take",
"content": "800"
}
],
"instances": [
{
"adjustedStart": "0:00:10.280357",
"adjustedEnd": "0:00:10.5529422",
"start": "0:00:10.280357",
"end": "0:00:10.5529422"
}
]
},
{
"id": 3,
"thumbnailId": "9cfcd99c-c885-4e02-96fa-47e8515076cb",
"isHeadSlate": false,
"fields": [
{
"title": "camera",
"content": "DARIUSZ WOLSKI,"
},
{
"title": "director",
"content": "RIDLEY SCOTT"
},
{
"title": "scene",
"content": "3013"
}
],
"instances": [
{
"adjustedStart": "0:00:16.3551134",
"adjustedEnd": "0:00:18.26321",
"start": "0:00:16.3551134",
"end": "0:00:18.26321"
}
]
},
{
"id": 4,
"thumbnailId": "eb89540b-9bfd-4128-98a2-eef35ebcf063",
"isHeadSlate": true,
"fields": [
{
"title": "camera",
"content": "ELIOT ROCKETT"
},
{
"title": "date",
"content": "12/05/2021 5600 K"
},
{
"title": "director",
"content": "TI WEST"
},
{
"title": "roll",
"content": "309.02. 17. 19"
},
{
"title": "scene",
"content": "95E"
},
{
"title": "take",
"content": "1"
}
],
"instances": [
{
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"adjustedEnd": "0:00:55.879971",
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}
]
},
{
"id": 5,
"thumbnailId": "ea12f855-d23e-434b-9d10-f57bd65fb292",
"isHeadSlate": true,
"fields": [
{
"title": "director",
"content": "OTTO WAGMAN"
},
{
"title": "production",
"content": "A GERMAN AFFAIR"
},
{
"title": "scene",
"content": "20"
},
{
"title": "take",
"content": "2"
}
],
"instances": [
{
"adjustedStart": "0:01:05.4204539",
"adjustedEnd": "0:01:12.0014401",
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}
]
},
{
"id": 6,
"thumbnailId": "838a70ab-ccd7-4244-8cc4-e7d8a1c98d22",
"isHeadSlate": true,
"fields": [
{
"title": "camera",
"content": "SQUARE"
},
{
"title": "date",
"content": "16 JAN '17"
},
{
"title": "director",
"content": "PAUL THOMAS ANDERSON"
},
{
"title": "scene",
"content": "3 FITEROY"
},
{
"title": "slate",
"content": "8"
},
{
"title": "take",
"content": "-"
}
],
"instances": [
{
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]
},
{
"id": 7,
"thumbnailId": "f9ea5590-5c36-4fcb-afaf-b8a73e20c45c",
"isHeadSlate": true,
"fields": [
{
"title": "camera",
"content": "Tom Stern. asc. afc"
},
{
"title": "director",
"content": "Clint Eastwood"
},
{
"title": "take",
"content": "15.32.05. 17"
}
],
"instances": [
{
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},
{
"id": 8,
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"isHeadSlate": true,
"fields": [
{
"title": "camera",
"content": "Ed Lachman, ASC"
},
{
"title": "director",
"content": "Todd Haynes"
},
{
"title": "roll",
"content": "B63"
},
{
"title": "scene",
"content": "B63"
},
{
"title": "take",
"content": "1"
}
],
"instances": [
{
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{
"id": 9,
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"isHeadSlate": true,
"fields": [
{
"title": "camera",
"content": "Eric Steelberg"
},
{
"title": "director",
"content": "Marc Webb 05/20/08"
},
{
"title": "scene",
"content": "4/B"
},
{
"title": "take",
"content": "77"
}
],
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{
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{
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"content": "Eric Steelberg"
},
{
"title": "director",
"content": "Marc Webb 05/20/08"
},
{
"title": "scene",
"content": "4/B"
},
{
"title": "take",
"content": "77"
}
],
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{
"id": 11,
"thumbnailId": "07a511e8-5746-483d-95a3-54d89fc08780",
"isHeadSlate": true,
"fields": [
{
"title": "camera",
"content": "Brendan Galvin ISC"
},
{
"title": "date",
"content": "9/1/21"
},
{
"title": "director",
"content": "Brendan Galvin ISC"
},
{
"title": "take",
"content": "9/1/21"
}
],
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{
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{
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"thumbnailId": "de1058c3-ab0f-4c45-bfef-b3c8bb9b7654",
"isHeadSlate": true,
"fields": [
{
"title": "camera",
"content": "J CRONENWETH"
},
{
"title": "director",
"content": "R. SCOTT"
},
{
"title": "scene",
"content": "123"
},
{
"title": "take",
"content": "409651"
}
],
"instances": [
{
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{
"id": 13,
"thumbnailId": "c6822574-fa28-4b9a-aca2-8c6514858e04",
"isHeadSlate": true,
"fields": [
{
"title": "camera",
"content": "Ed Lachman, ASC"
},
{
"title": "director",
"content": "Todd Haynes"
},
{
"title": "roll",
"content": "44"
},
{
"title": "scene",
"content": "44"
},
{
"title": "take",
"content": "44"
}
],
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{
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"content": "Bobby Bukowski"
},
{
"title": "director",
"content": "Chinonye Chukwu"
},
{
"title": "roll",
"content": "8"
},
{
"title": "scene",
"content": "[ the social network ]"
},
{
"title": "take",
"content": "13"
}
],
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"content": "CRONENWETH. ASC"
},
{
"title": "director",
"content": "FINCHER"
},
{
"title": "scene",
"content": "[ the social network]"
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{
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],
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},
{
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"content": "8/3/01"
},
{
"title": "episode",
"content": "-"
},
{
"title": "production",
"content": "HIGH TIDE"
},
{
"title": "roll",
"content": "-"
},
{
"title": "scene",
"content": "SLATE/IDENT"
},
{
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"content": "BEN LOEB"
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{
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"content": "OA"
},
{
"title": "director",
"content": "PANOS COSMATOS"
},
{
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"content": "ilter"
},
{
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],
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{
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}
],
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{
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{
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{
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{
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{
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{
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{
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{
"title": "director of photography",
"content": "NIGEL BLUCK"
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{
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"content": "READY PLAYER ONE (BTS)"
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{
"title": "director",
"content": "STEVEN SPIELBERG"
},
{
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"content": "15 19 0"
}
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},
{
"title": "date",
"content": "DARREN ARONOFSKY"
},
{
"title": "director",
"content": "NOAH"
},
{
"title": "roll",
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},
{
"title": "scene",
"content": "V154"
},
{
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],
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{
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"fields": [
{
"title": "camera",
"content": "JOHN SEAL"
},
{
"title": "director",
"content": "GEORGE MILLER"
},
{
"title": "roll",
"content": "18"
},
{
"title": "scene",
"content": "XM 1b.34.08.88"
}
],
"instances": [
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},
{
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"thumbnailId": "435e12dc-56c3-473e-8e30-1be97e23c68e",
"isHeadSlate": true,
"fields": [
{
"title": "camera",
"content": "WAGNER"
},
{
"title": "date",
"content": "ECTOR"
},
{
"title": "director",
"content": "PICTURE"
},
{
"title": "production",
"content": "CO."
},
{
"title": "roll",
"content": "4"
},
{
"title": "scene",
"content": "KINOSCOPE PICTURES"
},
{
"title": "sound",
"content": "MORROW"
},
{
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"content": "63"
}
],
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{
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"fields": [
{
"title": "camera",
"content": "DARIUSZ WOLSKI, A"
},
{
"title": "director",
"content": "DIDLEY SCOTT"
},
{
"title": "scene",
"content": "3013"
}
],
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{
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"fields": [
{
"title": "camera",
"content": "A"
},
{
"title": "date",
"content": "FRIENDS"
},
{
"title": "director",
"content": "HOSPITAL HALLUCINATIC"
},
{
"title": "scene",
"content": "OLD"
},
{
"title": "take",
"content": "3"
}
],
"instances": [
{
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]
},
{
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"thumbnailId": "26ae8a5e-9ee9-4d86-9455-5919c8877fa4",
"isHeadSlate": true,
"fields": [
{
"title": "camera",
"content": "R. PRiETO"
},
{
"title": "date",
"content": "1-Ozan"
},
{
"title": "director",
"content": "M.BLANCO"
},
{
"title": "roll",
"content": "150"
},
{
"title": "scene",
"content": "CHiCAS Y MALETAS"
},
{
"title": "take",
"content": "1"
}
],
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{
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]
},
{
"id": 37,
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"isHeadSlate": true,
"fields": [
{
"title": "camera",
"content": "LENS"
},
{
"title": "director",
"content": "MICHAEL B. JORDAN"
},
{
"title": "notes",
"content": "45-135/4/KMI6"
}
],
"instances": [
{
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},
{
"id": 38,
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"fields": [
{
"title": "date",
"content": "JAN-14 . 2009"
},
{
"title": "director of photography",
"content": "Robert Richardsde"
},
{
"title": "roll",
"content": "71"
}
],
"instances": [
{
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},
{
"id": 39,
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"fields": [
{
"title": "director",
"content": "Quentin Tarantino"
},
{
"title": "roll",
"content": "2009"
},
{
"title": "scene",
"content": "A1038A66A 3"
},
{
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}
],
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{
"title": "date",
"content": "D.P. MICHAEL SERESIN"
},
{
"title": "director",
"content": "MATT REEVES"
},
{
"title": "roll",
"content": "14.35.27. 10"
}
],
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{
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{
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{
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},
{
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"content": "MATT REEVES"
},
{
"title": "roll",
"content": "10 30 24 70"
}
],
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"fields": [
{
"title": "date",
"content": "08.15.2016"
},
{
"title": "director of photography",
"content": "Roger Deakins"
},
{
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"content": "5BIIB3"
}
],
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{
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"content": "Filmrools"
},
{
"title": "date",
"content": "24/03/12"
},
{
"title": "director",
"content": "FILTER"
},
{
"title": "production",
"content": "PETER HENDERSON"
},
{
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},
{
"title": "scene",
"content": "LY50L-"
},
{
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],
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},
{
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},
{
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{
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},
{
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{
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],
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{
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{
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},
{
"title": "director",
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{
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],
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{
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{
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],
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],
| Name | Description |
|---|---|
id |
The clapper board ID. |
thumbnailId |
The ID of the thumbnail. |
isHeadSlate |
The value stands for head or tail (the board is upside-down) of the clapper board: true or false. |
fields |
The fields found in the clapper board; also each field's name and value. |
instances |
A list of time ranges where this element appeared. |
Important
It is important to read the transparency note overview for all VI features. Each insight also has transparency notes of its own:
Clapper board detection notes
- The detection algorithm might not correctly identify the values.
- The titles of the fields appearing on the clapper board are optimized to identify the most popular fields appearing on top of clapper boards.
- The fields detection algorithm might not correctly identify handwritten text or digital digits.
- The algorithm is optimized to identify fields' categories that appear horizontally.
- The clapper board might not be detected if the frame is blurred or the text written on it can't be read by the human eye.
- Empty fields’ values might lead to wrong fields categories.
Clapper board detection components
No components are defined.