Help with fitting my window to screen in "Window Capture"

[HappySama]

so I have my settings set as shown

and whenever I try to record using "window capture" (recording a lecture on blackboard as an example), I keep getting black bars above and below and I just want it to be normally full screen perfectly just as "Display Capture" (tried reset transform, fit to screen, etc ...) and nothing seemed to work, the reason why I'm using "Window Capture" instead of "Display Capture" is that I don't want the taskbar to be shown, the other programs that I open while recording, etc..., here is an example of what i mean by the black bars

is there PLEASE any fixes for it with keeping the quality on 1080p and without stretching the screen? I'd be VERY APPRECIATED

 

[khaver]

Try resetting the transform settings for that source.

 

[HappySama]

Try resetting the transform settings for that source.

Doesn't work, it actually thickens the black bars below as shown here

 

[koala]

The black space is the space where the Windows task bar is. The browser size is reduced to make space for it. This makes the browser window a different aspect ratio than your video, which expects this space to be filled.
How do you expect this space to fill?
If you stretch the window vertically, the image gets distorted.
If you scale the window up in OBS, so the bottom touches the screen bottom, the image extends over the margin on the right.

One solution is to make the window not fullscreen but windowed, and size it so the same amount of space to the right is left out as the amount of space that is left out to make space for the task bar. Then scale the window source up in OBS, so it touches the bottom as well as the right margin. However, this upscaling is making text slightly blurry.
Another solution is to hide the Windows task bar, so the window can occupy the whole screen.

 

[HappySama]

The black space is the space where the Windows task bar is. The browser size is reduced to make space for it. This makes the browser window a different aspect ratio than your video, which expects this space to be filled.
How do you expect this space to fill?
If you stretch the window vertically, the image gets distorted.
If you scale the window up in OBS, so the bottom touches the screen bottom, the image extends over the margin on the right.

One solution is to make the window not fullscreen but windowed, and size it so the same amount of space to the right is left out as the amount of space that is left out to make space for the task bar. Then scale the window source up in OBS, so it touches the bottom as well as the right margin. However, this upscaling is making text slightly blurry.
Another solution is to hide the Windows task bar, so the window can occupy the whole screen.

although when I hide the taskbar, some black space still remains to be there, and I want to use the taskbar normally without hiding it, it seems there are no other solutions unfortunately (and for minimizing the window, as you said it makes the text a little blurry), I'm still thankful for your time and response!

 

[koala]

Well, you can unmaximize the browser window, then resize the window manually so it covers the complete desktop on its own. Drag the top left corner to the top left corner on your desktop, then drag the bottom right corner to the right desktop border and down "behind" the windows task bar. Although the bottom is hidden on the desktop by the task bar, you will see it in the window capture source in OBS.