When a vehicle stops during its trajectory, tracking fails at the corresponding frame.
It looks like it is a safety measure to detect failed tracking through stationary bounding box, but when the vehicle stops this does not indicate failed tracking, only a stopped vehicle.
2026-04-21 11:25:28,725 [INFO] Tracking stopped at frame 3822: tracker appears stationary (displacement=4.00px over 10 frames); likely latched onto background.
Suggestion: generate warning when tracker is stopped that says that the tracker is stationary, with options abort (which is the default behavior right now) and ignore for this tracking (where the latter will simply continue tracking for this tracking instance even if tracker becomes stationary).
I am not sure if this is compatible with how tracking works, but this represents my guess!
When a vehicle stops during its trajectory, tracking fails at the corresponding frame.
It looks like it is a safety measure to detect failed tracking through stationary bounding box, but when the vehicle stops this does not indicate failed tracking, only a stopped vehicle.
2026-04-21 11:25:28,725 [INFO] Tracking stopped at frame 3822: tracker appears stationary (displacement=4.00px over 10 frames); likely latched onto background.Suggestion: generate warning when tracker is stopped that says that the tracker is stationary, with options abort (which is the default behavior right now) and ignore for this tracking (where the latter will simply continue tracking for this tracking instance even if tracker becomes stationary).
I am not sure if this is compatible with how tracking works, but this represents my guess!