I need help with resizing my in game window.

[MirDa]

Hey,so when I try to stream in game on 1920x1080 but my game is on 1280x960 My window does not fit the screen. I know i can click shift and just resize it but when i alt tab I cant see the game on OBS preview so i cant resize it.. Can someone please help me with this issue ive been having it for so long..

 

[WizardCM]

In the OBS window, select the source in the Sources list, then press the following:
Ctrl+R
Ctrl+F

This will reset the transform for the source, then switch it to bounding box mode and fit it to the canvas.