Final answer:
Anamorphic pixels for 720p have a horizontal resolution of 720 pixels and a vertical resolution that can vary depending on the aspect ratio.
Step-by-step explanation:
Anamorphic pixels refer to a method of storing widescreen video in a compressed format. When you see 720p for anamorphic, it means that the resolution is 720 pixels in the horizontal direction and the vertical resolution can vary depending on the aspect ratio. Anamorphic widescreen formats are typically encoded at 853x480 or 720x404 pixels for a 16:9 aspect ratio.