Using the Header Video field will display a background video in your header area. The video must be MP4/H264 formatted video and should have a ratio of 16:9. To use a separate, lower res GIF file for mobile, this should be loaded into the Header Image field.

*NOTE - This is a looping/muted background video so the video should be kept short in size/length.

You will also want to load an image in the High Res Header Image field, since this will be the preview image while the video is loading.

The Header Image field populates the header background image.

The reccomended image size is: 1440px x 575px.  

We also recommend for page load speed, that all image files be uploaded as JPGs.  If you are creating your rotator images using photoshop, make sure to Save for Web & Devices, select JPG, and optimize quality to an acceptable level.  We reccomend one specific image not exceed 150kb in size.

To edit or add a new rotator, go to MEDIA > ROTATORS. To display a rotator on the home page, the rotator title will need to be called 'Homepage'

Your homepage rotator will automatically show up.  Do not select a rotator in the index page since the rotator is automatically loaded for your home page.

Resources:

Rotator Help Article