Good question about the export file format.
Note: it's actually "CSV" files, not "CVS" (which is an old version control system that predates git, and also a pharmacy...)
I'm pretty sure that we only want ONE CSV file per video, so I think the format should use four columns:
ChickId,Time,X,Y
You can assume this is the format for now. (However, after longer discussion with the client, it's possible the format could change a bit.)