meaning of the content in tracks_test_info.mat

[sopsos]

In info/tracks_test_info.mat and info/tracks_train_info.mat, there's many tuples with the format (1,2,3,4), but what do these mean?

[Monceeeeeeeeeeeeef]

loadmat(info/tracks_train_info.mat)['track_train_info'] give a (8298, 4) numpy.ndarray
the first one gives ==> array([ 1, 16, 1, 1], dtype=int32) then the second one ==> array([17, 95, 1, 1], dtype=int32),
The third term is the person id ,the last one is the camera id , for the 0001C1T001, there is 16 frames. that's the meaning of the second term,
the second tracklet 0001C1T002 has 75 frames therefore 75+16 gives 95, and lastly the first term is how many frames was there before+1