Video Sequencer. How to view image at zoom 1:1

I use Blender mostly to edit videos and it works like a charm!
My question today is, how can I see the video preview in the viewport at zoom 1:1?
I edit mostly 1280x720 videos, and I can see some aliasing issues because the video preview is smaller or larger, depending on the zoom value.
Thank you for your help!

Look in the View menu for the preview window

Hover mouse over preview window, press 1 key. This should zoom to 1:1.

Thanks, but there is no View menu, I only see: File Render Window Help.

Thank you! This worked, but only with the NumPad 1 key.