Delivery report

Outdoor nets · from behind

  • From behind
  • Slowed-down clip
  • Not checked by a coach yet

Demo clip · stock footage · Pexels License · Gokuldham Nar on Pexels (opens in a new tab)

See it in the clip

Prints on light A4 pages, frames and figures included, ready to save as a PDF.

0measured

Nothing in this clip could be measured reliably.

What we saw

This clip couldn’t give numbers, but the key moments are real: here they are on the clip.

  • Finding the frame…

    ≈ Back-foot contact

    Approximate: the moment is drawn hollow and isn’t held.

  • Finding the frame…

    Release

What to film for numbers

From behind we can follow the action, but knee, trunk and stride numbers need a side-on view.

  • Side-on, square to the pitchStand level with the bowling crease, on the side of the bowling arm, so the run-up crosses the frame.
  • Tripod at hip heightA steady phone at about 1 m keeps angles true. Lean it on a kit bag if you have no tripod.
  • Slo-mo at 240 fpsSwitch the camera to Slo-mo. At 240 fps the arm and the landing foot stay sharp; 120 fps works too.
  • Run-up to follow-through in frameStart recording before the run-up and stop after the follow-through. Keep the whole body in view.

Not measured from this clip

What would unlock each number next time.

  • Film side-on

    Tripod level with the crease and square to the pitch, whole body in frame from run-up to follow-through.

    Ball speed · Run-up speed · Pre-delivery stride · Take-off contact time · Jump height · Back foot to front foot · Back-knee bend after landing · Delivery stride length · Front foot to release · Front knee at landing · Front knee after landing · Trunk bend at release · Braking at landing · Release height · Arm speed (approx.) · Run-up rhythm

  • Add your height

    Your height turns pixels into centimetres for stride, jump and head movement.

    Head stability

  • Film a clearer clip

    Closer, in good light, with the whole body in frame for the whole delivery.

    Action type · Front-foot direction · Back-foot direction · Hip drop at landing

Capture quality

What the camera gave the analysis to work with.

  • Frame rate: could be better.Fine for the key moments. Slo-mo at 120 or 240 fps makes angles and scores accurate.
  • Slow motion: could be better.Exported already slowed down, by an amount we couldn’t work out, so no times or speeds are shown. Use the original file from the phone that filmed it instead.
  • Framing: could be better.Part of the body left the frame. Keep the whole action in view.
  • Video file: fine. Read cleanly.
  • Length: fine. Long enough for the whole action.
  • Orientation: fine. Upright.
  • Sharpness: fine. Sharp.
  • Light: fine. Good light.
  • Camera: fine. Steady.

About this report

Demo clip · stock footage · Pexels License · Gokuldham Nar on Pexels · https://www.pexels.com/video/dynamic-cricket-practice-session-in-outdoor-net-32746340/

Stock footage for the demo, not a StumpSage athlete.

The key moments are found automatically; the ones we’re less sure of are drawn hollow.

Not checked by a coach yet.