OBS · Platform not recorded
OBS Studio - How To Crop, Resize, Stretch & Rotate Sources!
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Answer
Launch up OBS Studio. After adding a video source, Image, Browser Source, or anything else, select the source. In your OBS preview, click and hold the source to change its location on the screen, and when selecting one of the corner or border points, you can resize the source. When holding shift while dragging one of the corners or sides, the source resizes but keeps scaling. Use the shortcut CTRL & F to resize it to fullscreen in its default scaling automatically.
Change the OBS Source Scaling
Launch up OBS Studio. After adding a video source, Image, Browser Source, or anything else, select the source. In your OBS preview, click and hold the source to change its location on the screen, and when selecting one of the corner or border points, you can resize the source. When holding shift while dragging one of the corners or sides, the source resizes but keeps scaling. Use the shortcut CTRL & F to resize it to fullscreen in its default scaling automatically.

Crop OBS Sources
To crop the source, right-click it in your sources, select Transform, and then Edit Transform. This will enable you to change the position, rotation, size, and crop from each side at the bottom.

Scene Item Transformation
The crop will be made in increments of pixels and will change depending on which resolution your source is visible.

Reset the OBS Source Transformation
In case you’re unhappy with your crop, then use the shortcut CTRL & R, to reset the transformation. Use the Alt key while dragging the border side to rescale every side manually.

Video walkthrough
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