Hi,
Yes, if you want to Upscale Videos only using Starlight then you can use a Cloud App called Astra which you can try for free before getting a Subscription
Here’s the information for Astra
Or you’ll need a Topaz Video Subscription and either buy a one time Credits Purchase or a Credit Subscription Plan
Here’s the information for Topaz Video
Here’s the Credit Plans and One Time Purchase info
Alternatively, you can get a Studio Subscription Plan that includes both Topaz Astra and Topaz Video
Here’s information about all Subscription Pricing
Hope this helps