Blur the backgrond behind a moving object

[Piet]

Hello,
I wonder if avidemux can do the following.
Some other programs can but the results are not what I want.
I have videos of figure skaters and I filmed them with my smartphone so I do not have any shallow depth of field.
That's why I'm looking for an editor that allows me to keep the moving person in focus and blur the st of the scene. Other editors fail after some time because they can't correctly recognize the moving person.

[eumagga0x2a]

No, Avidemux provides no filters even remotely able to track a moving object.

Other editors fail after some time because they can't correctly recognize the moving person.

Just the mere ability to identify the shape of a skater borders on magic and requires advanced AI tools.