Thank you very much for your help.
I would like to ask you a question about using Kdenlive.
How do you manage the video data installed in the truck on the Kdenlive tool?

If I copy a video from "V1" and paste it into "V2" for editing, will the amount of data be doubled?

If I add editing such as mosaic or range selection from the effect, how is the data managed?

Also, will the amount of data change when it is rendered?

I hope you can give me some answers.

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do you have successfully builded kdenlive on Windows?

I'm sorry. I made a mistake.
It was "Kdenlive specifications", not "Kdenlive usage".