Timing worksheet

Leave unknown timings blank. Use the recording and its timed transcript, then measure starts in the actual Slides / OBS / Zoom setup. All values are seconds, not timecode strings. R refers to media time zero, not first motion or first speech. If you observe a later event at source time h and presentation-clock time A, use R = A − h − C.

S = C + R for each trial. Required: S + T ≤ P ≤ S + H − B. This worksheet also checks last speech L and the usable clean-tail endpoint E. If the entire tail is usable, explicitly set E = H. No real recording values are included.

Check every observed start

Latest safe lower bound: C + max(R1,R2,R3) + max(T,L). Earliest upper bound: C + min(R1,R2,R3) + min(H,E) − B. P must fall within both, inclusive. Extra margin is still needed for measurement uncertainty and unobserved variation.

A fitting interval does not prove completed visual proof, received lip sync, presentation alignment, readable text, or manual shutdown. Record those separately in trials.csv and checkpoints.csv. Three starts are a minimum sample, not a bound on all future starts.

Data remains in this page until you clear or reload it. Save explicitly to retain a copy; nothing is uploaded, stored in the URL or automatically persisted. Treat a filled worksheet as private. The illustrative button uses invented delays and does not mark any meeting test passed.