Enlarging a capture window without losing quality

[Divazona]

I have a Logitech brio hung from my ceiling over my piano. I want to display only the keyboard in the obs capture window. So I have used the Logitech camera settings app to zoom in as much as possible on the keyboard and then in obs I crop out everything in the picture except the keyboard. I need the keyboard to extend the full width of the obs screen but when I enlarge the capture, the image loses quality and becomes blurry. Viewing the full picture from the camera is perfectly crisp and clear. Is there another way to do this so that I can fill the screen with the keyboard and keep the quality?

 

[konsolenritter]

Hang the brio lower so that your keyboard span fits the pictures width almost. Avoid any zoom on the camera cause its a digital one zoom. Then do the rest by cropping in obs as you made already. Which base and output resolution in obs do you have?

 

[Lawrence_SoCal]

Also, the depending on your computers performance, my recollection of collective advice was to upgrade from the default bilinear transform (if I'm recalling correctly.. sorry can't check, as OBS PC isn't at home anymore). There are better video transforms than the default, at the expense of CPU hit
As for zooming in using OBS without losing image quality = technically impossible (you are asking computer to approximate pixels. yes I'm aware of some photo (not video) up-res AI approaches)

So, as noted above, don't use digital zoom, if at all possible, and if you do, keep it to a minimum (and you may want to test OBS vs Logitech's zoom, but combining digital zoom on both should have the blurry effect you describe). The standard fix is as noted, get camera closer and don't zoom; or use a more appropriate camera/lens (most webcams are designed to be focused at only a couple of feet away, the background, at 6ft+ will usually be 'soft' (not sharp) by design.

As for mounting the camera, a solid option would be a C-stand with boom arm, but that can be in the $100 range and up. A simple light stand & boom arm could be had for much less and be plenty adequate for a super lightweight webcam (but probably not a DSLR). Regardless, I would not expect most webcams to have sharp focus on a full-size piano keyboard, regardless (maybe sharp enough, not really that sharp, due to distance involved). A sharp image for the keys, at around 6ft across, simply needs better optics than 99% of webcams have