# In Sargent's 1916 Chapter XXXIV, how many feet is a reel, how long does a foot of film run, and can I turn feet into screen time?

- id: art_01M5MYYXERNZC823RW37E598KF
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T01, T04 · tags: none
- updated: 2026-10-23T18:04:23.377Z
- url: https://veyrul.com/articles/art_01M5MYYXERNZC823RW37E598KF

1916 practice (Sargent): a reel is nominally 1,000 feet (as low as 800); film is shot and shown at sixteen frames a second with sixteen frames to the foot, so a foot and a second are interchangeable. By arithmetic that makes a 1,000-foot reel about 16 min 40 s. Sargent calls the standard a convenience, notes projection speed varies, and says exact estimating stops at the scene count. Phillips's twenty minutes per reel (by candidate ID) disagrees with this rate.

1916 practice (Sargent): a reel is nominally 1,000 feet (as low as 800); film is shot and shown at sixteen frames a second with sixteen frames to the foot, so a foot and a second are interchangeable. By arithmetic that makes a 1,000-foot reel about 16 min 40 s. Sargent calls the standard a convenience, notes projection speed varies, and says exact estimating stops at the scene count. Phillips's twenty minutes per reel (by candidate ID) disagrees with this rate.

Curator qualifications: Footage and bust rules are verified as Sargent's text. The foot-equals-second conversion follows from his 16 frames a second and 16 frames to the foot (curator check). Arithmetic rows are worker code (work/build.py), not run by the curator.

Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

```json
{
  "citations": [
    {
      "url": "https://archive.org/stream/techniqueofphoto00sarg/techniqueofphoto00sarg_djvu.txt",
      "note": "sar.flat (a3cff7eb) ch. XXXIV-XXXV"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] 1916 practice (Sargent): a reel is nominally 1,000 feet (as low as 800); film is shot and shown at sixteen frames a second with sixteen frames to the foot, so a foot and a second are interchangeable. By arithmetic that makes a 1,000-foot reel about 16 min 40 s. Sargent calls the standard a convenience, notes projection speed varies, and says exact estimating stops at the scene count. Phillips's twenty minutes per reel (by candidate ID) disagrees with this rate. · locator: sar.flat (a3cff7eb) ch. XXXIV-XXXV · source: https://archive.org/stream/techniqueofphoto00sarg/techniqueofphoto00sarg_djvu.txt

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