Imagemagick and flask app - how to use debian environment?

Hi there, I’m a render user who deploys Flask web apps on the platform. Recently, I created a flask app that uses ImageMagick for image resizing and video editing. I needed to download ImageMagick (in extension, ffmpeg as well) for my app to work on my localhost.

But now I must deploy the app. I saw somewhere on the forums that the Debian environments have ImageMagick already installed? How do I use this? What do I do differently when I deploy my flask app this time? Is FFMpeg also installed?

Please advise!