4

I want to record some demos on my PC (Windows or Linux), but some of the software or webpages I will be showing contains sensitive information. I believe this is doable with video editing, but when I do a live demo, this not an option.

I could also use a software that would hide some predefined spots on the screen, by doing something like placing small black windows always on top. But I don't know if such a software exists.

Thanks in advance for any help.

3

Regarding screen recorders, you can check the answers on this question

Concerning the privacy part, here's an AutoHotKey script that uses black gui windows with the "always on top" feature to hide anything below them. Use the hotkey Win+b to create a black box at the location of the mouse cursor. Modify the first two lines of the script to change the block dimensions. Note that you can only insert up to 99 of these blocks before having to reload the script.

Just install AutoHotKey, save the following code in a .ahk, and run it

blockWidth = 200
blockHeight = 50

;; End of configuration section

#NoEnv
#Persistent
#SingleInstance

SendMode Input
SetWorkingDir %A_ScriptDir%
CoordMode, Mouse, Screen

guiIndex := 1
while true
  {
  #b::
    MouseGetPos, xpos, ypos
    Gui %guiIndex%:Default
    Gui, +AlwaysOnTop -Caption
    Gui, %guiIndex%:Color, 000000
    Gui, %guiIndex%:Show, x%xpos% y%ypos% w%blockWidth% h%blockHeight%
    guiIndex := guiIndex + 1
  return
}

Here is an example:

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