Crop resolution

[erdna]

I want to get fullHD (1920x1080) crops from UHD video. I made a UHD pic (link hereunder) to verify the resulting resolution with a 50% crop. It should result in a fullhd (1820x1080) resolution image but this is not the case. Is this normal in VSX?
https://www.dropbox.com/s/2av6y5pmsvlmj ... s.jpg?dl=0

[lata]

Hi Andre

I am not sure I understand what you are trying to achieve?
Are you referring to Take a Snapshot sizes.

After applying the cropping filter you can take a snapshot in project mode, this will use the project properties frame size to create the snapshot.

[asik1]

here it is

[erdna]

My description is indeed not clear. I will put my problem in another way.
What I want to get is a 1920x1080 50% crops out of UHD footage. Cropping is not the problem, but the remaining resolution is a problem. After suspecting that the resolution was not what it should be, i made a UHD test pic (see link in my firsst post above). I put this UHD image onto the overlay track (project mode 1920x1080) and choose "original size" in the preview window to get the central part of the UHD pic. This central part is supposed to be a 1920x1080 crop from the original UHD pic and should result in a fullhd video when rendered as e.g. a 1920x1080 AVCHD file, and it is not. So my conclusion is: when I want to get (50%) crops from UHD footage I will not ger the expected fullHD resolution.
Plse find in thel ink hereunder a straight fullhd render of the pic used inr my UHD canvas, and a video rendered by a 50% UHD crop. Compaire resolutions on a fullhd screen.
https://www.dropbox.com/s/lmp6mr0twd1yy ... t.zip?dl=0

[lata]

Hi erdna

That link does not work for me???

I think I understand what you are doing, unfortunately Video Studio is not very good at Zoom and retaining quality

Some thoughts…..
There have been some complaints/issues regarding Zooming into a map, the quality is poor compared to creating a similar 1920 X 1080 image with photoshop.

I think a moving image / video is a little more forgiving but even so could be better.
Your sample image will show all problems choose how small.

When we add the UHD clip it immediately displays as 1920 x 1080 effectively loosing a lot of detail. We would expect zooming in or selecting Original size would retain that quality. But no the equality drop-off is noticeable.
Interestingly dragging the timeline increases the image quality.

Rendering to a video format also shows better quality then timeline playback, but is that good enough?

[erdna]

Thanks lata for your reply, and sorry for the corrupt link, the new one should work.
You exactlu describe my problem. Corel should solve this by not rasterizing first, but only after pan/zoom. Good cropping and zoom could become more importantwith the upcoming UHD hype.
https://www.dropbox.com/s/lmp6m0twd1yy6 ... t.zip?dl=0