Shrink a 4800 x 2160 Pixel video by 50% and place it in a 1920 x 1080 canvas

Hi there, I´m new to shotcut and I would like to shrink a 4800 x 2160 Pixel video by 50% and place it in a 1920 x 1080 Full HD canvas, because the resulting video will be 2400 x 1080 pixels.

How do I do this?

I already saw in a youtube tutorial that I can use a filter to define canvas, video size and zoom, but unfortunately every time I change the video size to 2400 x 1080, it won’t let me adjust the canvas size to 1920 x 1080…

Thank you!


I don’t understand your math here…
Define canvas.
Do you mean Video Mode (project resolution and frame rate) instead?

If you want your resulting video to be 2400 x 1080:

  • Go to: Settings > Video Mode > Custom > Add to create a new 2400 x 1080 custom video mode. If you give it a name it will be saved and you’ll be able to re-use it.
    (use the Frames/sec of your choice)

  • Bring your 4800 x 2160 video(s) into your project. 4800 x 2160 and 2400 x 1080 have the same aspect ratio (20:9).Your clip will be resized automatically to fit the 2400 x 1080 project.

  • Export your video without changing the Resolution and Aspect ratio parameters.

Hi MusicalBox and thanks for your reply!

I want to have a FullHD video with 30 frames/sec :slight_smile:

The video I am trying to convert is a UHD video but has a kind of border at the left and the right side, (3840 + 960 border = 4800 width, height of 2160 is correct to match UHD) so my idea was to 1. reduce the size to FullHD by changing the zoom to 50% and 2. crop the left and right border in a way that the video is not compressed in the width. Any Ideas?

Start with a new project, set the video mode to the final resolution you want (choose: HD 1080p 30).
Put video on timeline.

Add the Crop:Source filter to your video. Click on “Center” option and I think it wil automatically crop out the sides.
If not: manually type 480 on Left and 480 on Right (960/2, for each side, or visually drag the slider to eliminate all black areas).


Thank you Daniel, I tried with your advices. It is processing. I hope it works…

Thanks Daniel,

it worked, but I had to apply the filter to the source, not the timelime.


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