Is there anything where you can insert your Roblox character and then choose a background and / or pose? So like Minecraft Novaskin, just for Roblox.
Nah, I think if it were there the roblox developers would go bankrupt because nobody would buy robux anymore. Therefore: there's not
I would use Roblox Studio for cinematic recordings.
Go to a green screen game, take a screenshot and insert a picture of your choice in the background with a program…