Two local onboard videos and a browser. Basic alignment is free; sector timing and synced replay use Rider Pro.
Load and align the two films
Open Onboard Studio for the free comparison, or Tools → Onboard Studio in your Rider Pro account for the Pro tools. Use two local videos covering the same track layout. A desktop or laptop gives you the side-by-side view and keyboard controls used below.
- Load one video into each panel. In the free tool, drop a file onto its panel or click the upload area. Confirm that each video plays before aligning them.
- Choose a fixed reference visible in both clips. A start/finish line crossing or passing a trackside marker can work. Decide which precise moment represents the crossing in each view, accounting for where the cameras are mounted.
- Click the first panel to make it active and position its video at that moment. Use that panel’s small scrub bar for the approximate position, then the comma and period keys for frame steps.
- Click the second panel and position it independently at the equivalent moment. The A/B nudge controls provide adjustments of 0.1, 1 or 5 seconds for the corresponding clip. Check the A/B label before adjusting so you keep the first reference in place.
- Play both films and check the reference. Both rides should pass your chosen point together. If one has already crossed it when the other arrives, pause and correct the initial alignment before comparing later parts of the lap.
Basic alignment is complete once that shared reference matches. No Pulse recording or telemetry equipment is needed.
Follow the difference after the reference
Let both films continue through the next passage. A gap that develops after a correctly aligned start is part of the comparison; leave it visible while you watch where it grows or shrinks.
Slow playback or pause to inspect a line, and use frame steps for a moment that passes too quickly. Compare positions against track markings because camera mounting and field of view can change how similar paths look.
If the starting reference does not match, return to the alignment steps. If the films match there and then separate, that alone is not evidence of an alignment error.
Continue with split timing in Rider Pro
Once the films are aligned, the separate Wait For Me guide covers marking time differences and replaying the selected passages together. Basic alignment is complete without that step.
For Pulse recordings rather than films, use the telemetry lap-comparison guide.