Render cropped video

Hello. I'm stuck with the easy task. I really need help.

I have a project with 4k video. I cropped it. When i try to render i get a 4k video with black frame. How can i render the size of the cropped video on timeline without zooming it?

okay, probably my question was not clear.

i have cropped the frame. now i have black board. if i just render it, i will get a videofile with black borders.

Screenshot_2024-12-01_015708.jpg (122.73 KiB) Viewed 46 times

i have two options:
1. Make a zoom. It's not good coz i will upscale the video to the original resolution and also crop more frame (it fits the original resolution only if you crop the same aspect ration).

Untitled-1.jpg (149.66 KiB) Viewed 46 times

2. Make an output resolution as the cropped frame (dummy video editors or ffmpeg console do it easy) and get for instance 1600*700 instead of 1920*1080.

Untitled-2.jpg (84.47 KiB) Viewed 46 times

So is it possible to "deliver" automatically only cropped frame with the frame's resolution? In dummy editors when i crop the file it renders to the cropped resolution automatically.