I trimmed several minutes from the beginning of a motorcycle clip and then added a speed gauge. The gauge starts close to correct but gradually looks wrong compared with the road speed.
Is this usually a GPS problem, a frame-rate problem, or an editing-timeline problem?
Moto & telemetry workflows
I have seen sync problems caused by treating the telemetry timeline and the edited video timeline as if they still had the same zero point. If the video is trimmed first but the data track is not offset by the same amount, the error is immediate.
A gradual drift can also be different from a fixed offset, so I would test a short section near the beginning and another near the end.
Telemetry & gauges
Good diagnostic approach: distinguish a fixed offset from true drift. Fixed offset usually points to start-time alignment; increasing error can point to timestamp interpretation or a conversion step.
For the comparison articles, we will test workflows that keep the camera file and telemetry tied together as long as possible before final trimming and export.
Action Video Lab Editorial Team