Synchronisation of two cameras

[Ya Huang]

Hello,

New to opencap, after following all the instructions and advice and papers, when I collect data, how do I check and verify the delay between the two phone cameras?

Is there any way to minimise the delay?

Thank you

Ya

[Scott Uhlrich]

Cameras are automatically synchronized based on keypoint data. A fail-safe way to sync them is to have the participant raise and lower their hand at any point during the trial. Otherwise, we have sync algorithms that work well for gait and most other activities. See the supplemental material in the OpenCap paper if you care for details.