what is the software that can clear the pixel that they don't wan people see in the video?

Answer 1

Any editing software like Final Cut Pro or Adobe Premiere can create pixelation to obscure nudity, offensive lip sync or identifying markers such as number plates.

However from your question it sounds like you want to 'remove' the pixelation?.....This isn't possible or even logical. That is like saying you want to make your brown eyes blue.