Go to screenshotboost.com

Start the editing

Click to upload the screenshot

Select the screenshot you want to edit

It gets loaded immediately and ready to start editing

Select the background color. You can select gradient as well

Pick a desired background

Pick a pattern for the screenshot

Pick one from pre-built pattern list

Adjust the pattern movement speed

Adjust pattern size

Select a dimension

Play around with available options to make the screenshot better

Once the customization is done, click Download button

Wait for it to make the video

The video gets downloaded pretty quickly