kaz-k offered you good advice, to speak with the Apple sales person about this. However some of those sales people might not be well informed about this question and how well different Mac models might do.
I would recommend a MacBook Pro, not MacBook Air. My daughter runs a photography business and found a MacBook Air was not powerful enough, the MacBook Pro works much better. And she does image (photo) editing, not video editing; video is more demanding. The MacBook Air you mention has only the minimum memory (8 GB) and a small internal drive (512 GB). Photo and video editing can require huge amounts of scratch storage, tens or even more than 100 GB depending on what you are doing, so the 512 GB looks too small to me. You will be needing external drives, but the MacBook Air has only two ports for external devices.
You said your budget is limited, that is true for all of us, but keep in mind that if you get an underpowered or under spec-ced Mac, you will be hearing fans running all the time and sometimes looking at a beachball waiting for tasks to complete.
