The best HD quality can be up to 720p, 1080p, what you need to do is paste a Youtube link.
It supports images, YouTube, Vimeo, self-hosted MP4 videos, WordPress posts and WooCommerce. WonderPlugin 3D Carousel is the easiest way to create stunning responsive 3D carousels and sliders for your WordPress website.Free to use and user-friendly software that is at your service if you need to convert YouTube to MP4 video format.