To save Hard Drive space, how can I record merely the green rectangles below containing heads?

I waste bytes if I record the areas crossed out in orange, like the backgrounds and shoulders. See screenshot below from Skype's video. Don't hesitate to answer this for other video chat apps like Zoom!

  • 2
    You don't really waste much data at all, because video basically only records anything that's moved since the last frame. A static background will use very little data compared to the constantly moving heads.
    – Tetsujin
    Commented Dec 22, 2022 at 8:55
  • Would you mind clarifying what is the video source? Whole screen capture? Video file on your hard drive? Skype proprietary video stream? Zoom stream?
    – Nicolas Raoul
    Commented Dec 26, 2022 at 1:32
  • @NicolasRaoul Our family and I need to capture from live Skype and Zoom. We use both. NO, not whole screen capture.
    – user82164
    Commented Dec 26, 2022 at 6:07

1 Answer 1


Opencv is a library that supports recognition of items or faces.

There are several applications based on opencv as well as a documentation for cropping faces.

I've worked with OpenCV in conjunction with python and found it easy to use

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