Footage sources and licences
Links only. The third-party clips are not hosted here. Annotated videos and frame grabs on the Experiments page are derived from the CC-licensed clips below and carry the same attribution requirement (wKP0iWaAlZI: CC BY, uploader ლევანი რობაქიძე; 3hREO5HBdw0: CC BY, informedinsport.com).
| file | URL | licence | res / fps / frames | view | what is visible |
|---|---|---|---|---|---|
| yt_wKP0iWaAlZI_30m_sprinting.mp4 | https://www.youtube.com/watch?v=wKP0iWaAlZI (uploader ლევანი რობაქიძე, 2021-02-11, title "30m sprinting") | YouTube CC BY (reuse allowed), per yt-dlp metadata | 1280x720 / 30 / 6133 | STATIC ground-level camera, athlete runs straight TOWARD the camera (down-the-line, front) | 6 clear reps: stand -> crouch -> go -> run at lens. No cones/tape; real distance unknown ("30m" title only) |
| yt_A4hq-rH9z_I_30m_dash.mp4 | https://www.youtube.com/watch?v=A4hq-rH9z_I (Shiva Sindhu, 2022-12-05) | YouTube CC BY | 1280x720 / 30 / 1020 | handheld, multiple shots, panning | single athlete, grass lanes; camera pans (29% frames >2 px/frame global motion) |
| yt_3hREO5HBdw0_block_start.mp4 | https://www.youtube.com/watch?v=3hREO5HBdw0 (informedinsport.com, 2015-11-03) | YouTube CC BY | 1280x720 / 25 / 287 | side/oblique indoor, slightly handheld | block start, clear first-movement frame, camera then pans |
| enugu_100m_boys.webm (+ _race_girls, 200m_race_boys, 200m_race_girls) | https://commons.wikimedia.org/wiki/File:100m_Race_-Boys-Racing_Events,_Inter-house_Sports_of_Annunciation_Sec._Sch._Enugu-_Play_and_Africa.webm (Play and Africa / Arch-Angel Raphael) | CC BY-SA 4.0 | 1280x720 / 29.97 / 391 (boys 100m) | finish-end, handheld, panning, many runners | school 100 m heat, lane lines, no distance marks. Only boys-100m was analysed; the other three are unanalysed spares |
| athletissima_100m_f.ogv | https://commons.wikimedia.org/wiki/File:100_m_female_Athletissima_2012.ogv (user Inisheer) | CC BY 3.0 | 640x360 / 25 / 480 | broadcast, behind start then panning | 8 athletes, blocks; camera moves 78% of frames |
| universiade_w100_final.webm | https://commons.wikimedia.org/wiki/File:Women's_100M_Final_-_28th_Summer_Universiade_2015_Gwangju.webm (FISUTV) | CC BY 3.0 | 1280x720 / 25 / 335 | broadcast tracking | not analysed (moving camera, 8 lanes) |
Not used: Pexels clips (site blocks scripted download; not circumvented). Non-CC YouTube sprint videos (licence NA) were deliberately not downloaded. Existing local assets (Gautam beep-test clips, /workspace/beep-september/media) are shuttle-run footage, not sprints; not used. Attribution required for CC BY / BY-SA items if anything is ever shown publicly. The clips themselves are NOT hosted on this site; only links and licences are listed.