Investigate realsense genlock synchronisation.

[jackjansen]

See https://www.intelrealsense.com/depth-camera-external-sync-trigger/?_ga=2.79966868.281351846.1702046437-1902502977.1701897118

Also https://support.intelrealsense.com/hc/en-us/community/posts/360048505973-Connectors-needed-to-sync-multiple-cameras has some interesting pictures.

Both pages refer to a white paper but I cannot find it.

[jackjansen]

Actually there is quite a bit more to realsense synchronisation nowadays. For example, it seems we should use mode INTERCAM_SYNC_FULL_SLAVE to ensure both RGB and D are synced (otherwise only D may be synced).

IntelRealSense/librealsense#10926 has a lot of interesting stuff.

But: it seems the white paper that cannot be found has been retracted because it contained errors. See https://support.intelrealsense.com/hc/en-us/community/posts/11336312787091-I-can-t-find-the-white-paper-on-external-synchronization-of-RealSense-depth-cameras

[jackjansen]

We have experimented with this a lot, and it simply doesn't work.

[jackjansen]

But a final note: a workaround may be to do things "the other way around": use the realsense cameras with their "normal" sync, and then create a genlock sync pulse from the realsense sync pulse.