Take a look at OBS.
It's a Free and Open Source program that allows you to record both your screen and specific windows. (Note: it cannot record minimized windows, as minimized windows will stop rendering completely).
Here's a step-by-step on how to go about recording a specific window:
- Download and install OBS.
- Open OBS and the Program you want to record.
- In OBS, go to
Settings -> Settings then go to
Broadcast Settings and set
File Output Only.
File Path to wherever you want the recording to be saved to.
OK to save and apply the settings you just changed.
- In the main screen of OBS, right-click on the white box in the bottom left labeled
Add Scene, then enter any name you want to identify the scene as.
- Click on the scene name you just created in the same white box, then in the white box to the right labeled
Sources, right-click and do
Add -> Window Capture and enter any name you want to identify the window capture as.
- In the
Window dropdown, find your program window that you want to record and click it.
OK to save that window to be recorded.
Preview Stream and then click
Edit Scene and position the window in the recording box to however you want it displayed in the final recording.
Stop Preview and you should be ready to record that window whenever you want.
- To start the recording, click
Start Recording and to stop recording, click
This will record your program's window reguardless of whether it is in the foreground or background. Remember, since a window is not rendered when it is minimized, it will be unable to be recorded.