I have opened a similar issue Reset nvDsAnalytics counters and nvTracker counter, Python
I understand the unique id wont overflow but we are happy with the counters starting from 0,1,2 … N but N needs to go back to 0 the following day, the same with any analytics line crossings etc.
Im sure this can be accomplished with knowing the previous days ending point, but then we need to modify the metadata per object per stream.
Regards Andrew