Movement analysis from video works when capture is consistent and a person checks the result. Pose and object tracking can count repetitions, measure angles and time actions, but camera placement, lighting and a clear definition of what counts matter as much as the model. These four steps set those up first and measure agreement with a human before anyone relies on the numbers.

Step 1 — Define what to measure

Goal: Agree exactly what counts as a repetition, a good form or an event.

  1. Pick one movement or activity to start with.
  2. Write a plain definition of a repetition, a fault or an event, with examples.
  3. Decide what the coach or supervisor needs to see to trust a result.
  4. Agree how consent and footage storage are handled for the people filmed.

You finish with: A written definition, review needs and consent and storage rules.

Step 2 — Standardize capture

Goal: Make every recording usable.

  1. Fix camera position, distance and angle for the chosen movement.
  2. Check lighting and background so the person or object stays visible.
  3. Record a set of sessions and hand-count them as a reference.
  4. Note conditions where tracking struggles, such as occlusion or low light.

You finish with: A capture setup and a hand-counted reference set.

Step 3 — Track, measure and review

Goal: Produce results a person can check quickly.

  1. Track pose or objects frame by frame.
  2. Compute counts, angles and timings from the tracking.
  3. Mark low-confidence frames instead of hiding them.
  4. Show clips and scores side by side for the coach or supervisor to confirm.

You finish with: Reviewed counts and scores with clips as evidence.

Step 4 — Measure agreement and expand

Goal: Earn trust before using results more widely.

  1. Compare automated results with the hand-counted reference.
  2. Track review time per session against your starting point.
  3. Fix capture or definitions where agreement is low.
  4. Add the next movement only once agreement is acceptable to the reviewers.

You finish with: Measured agreement and a capture routine ready for the next movement.

Common pitfalls

  • Starting analysis before camera placement and lighting are consistent.
  • Treating scores as decisions instead of advice for a coach or supervisor.
  • Hiding low-confidence frames instead of marking them.
  • Filming people without agreed consent and storage rules.

See it as a workflow

Sports & field operations

Movement and activity analysis from video

Count repetitions, score form or track activity from ordinary video, with results a coach or supervisor can check.

See the workflow

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