now video2aio reads _eye.log and output gaze data.

You can use the following to get

Gaze data only: C:\Users\gfeng\Documents\GitHub\video2aoi>grep "Gaze:"
cbalm48.avi_AOI.log >cbalm48_gaze.txt

AOIs: C:\Users\gfeng\Documents\GitHub\video2aoi>grep "AOIDAT"
cbalm48.avi_AOI.log >cbalm48_AOI.txt