[Lex Computer & Tech Group/LCTG] Computer graphics question

[Schonfeld]

Hey wizards - Maybe someone can suggest a solution to the following
question:

I've downloaded a YouTube video as an mp4 file.  (It's a video of tracks
emanating from a small radioactive source in a cloud chamber.)  From time
to time I want to point and click on a feature in the video (the starting
point of a new track) and have the coordinates and time (or frame number)
of the click automatically written to an Excel file.  I mostly use a PC but
I could easily move to a Mac or iPad.  Do you know any simple ways to do
this? - Jonathan Schonfeld
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