To use Handbrake to compress your videos, follow these steps.
If you don’t already have Handbrake on your computer, you can download it here.
Open your Handbrake software and add the video file by dragging and dropping it into the window.
In the Summary tab, click the box next to Web-Optimized.
Make sure the Preset is Fast 1080p.
Click on the Dimensions tab.
Under Size, make sure the Width and Height match up to the original source size shown.
Under Cropping, select Custom and set Top, Right, Bottom, and Left to 0.
Select where you want to save the file, then click Start Encode.