HDR and 60 fps
Two ticks under Upscale, both off unless you choose them.
HDR: brighter highlights and richer colour on HDR screens, such as recent iPhones. You get your video as usual, and an HDR copy to download a few minutes later. If it can't be made, its credits come back.
60 fps: smoother motion. With no upscale chosen, the video is also delivered at 1080p.
Each shows what it adds before you press Generate.
Both are included on Standard, Pro and Max.