Laptop for video editing / image processing?

For about 1200 euro

Which software?

Grib said, you need a notebook with a good i5 or i7, alternatively I would rather use a Ryzen 4700U and 16GB + Ram with a dedicated Nvidia graphics card, there should be a lot to choose from.

Does not matter. What fits best in terms of price / performance ratio

You can have a look here, I've already made a rough preselection

https://www.notebooksbilliger.de/...ility=alle

Macbook