If you cannot buy a plugin:
The Denoise plugin in Premiere Pro offers several key features that make it an effective tool for reducing noise and grain in video footage. These features include:
When you hit "Capture Noise Print," you are teaching the software the texture of the environment. You are isolating the unwanted atmosphere of the room. It is a moment of strange irony: to create the illusion of silence, the plugin must first memorize the sound of the noise perfectly. It must understand the enemy to dissolve it.