How do practitioners' public accounts time a walk cycle (frames per step, on twos) and where do they differ from measurements?

Partially verified: the curator re-read none of the cited sources; S8, S9, S10, S3 rest on the producer's pinned reading. Public practitioner tutorials use 24 frames for two steps (12 frames per step, 'on the 12s'), with 8s for faster and 16s for slower walks; one stop-motion guide uses an eight-picture cycle for 12-15 fps. Measured steps at 24 fps are about 12-14 frames, so the craft default matches a cadence of 120 steps/min, the top of the measured range. The craft numbers are teaching conventions, not measurements. Curator qualifications: Partially verified: the curator re-read none of the cited sources; S8, S9, S10, S3 rest on the producer's pinned reading. Curator GET 2026-10-23 of the sources not re-read (mechanical source evidence, not semantic verification): S8: HTTP 200, bytes equal to the producer pin; S9: HTTP 200, bytes differ from the producer pin; S10: HTTP 200, bytes differ from the producer pin; S3: HTTP 200, bytes equal to the producer pin. Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

{
  "citations": [
    {
      "url": "https://idearocketanimation.com/27285-animate-a-walk-cycle/",
      "note": "candidate evidence excerpts"
    },
    {
      "url": "https://rustyanimator.com/walk-cycle-animation/",
      "note": "candidate evidence excerpts"
    },
    {
      "url": "https://www.stopmotiontutorials.com/en/expert-guides/animation/animate-the-walking-movement/",
      "note": "candidate evidence excerpts"
    },
    {
      "url": "https://www.ebi.ac.uk/europepmc/webservices/rest/PMC9767722/fullTextXML",
      "note": "candidate evidence excerpts"
    }
  ]
}