How many miles do you have on those struts and strut mounts?

 

Maybe 10k.

 

Sometimes with suspension components, not only will you need to thunk around but actually apply a good amount of pressure to move things. Maybe try a pry bar next.

 

With the top up, the sound seems like it's coming from the passenger storage area.

With the top down, it sounnds like it is perpendicular to the driving position on th passenger side.

Don't know if that helps.

 

I would do the above as well as check all suspension bolts.

 

I had the same issue. My sway bar end link (dogbone) was loose at the strut so it would clunk clunk over bumps. But your video looks fine. ....

 

From the video; there does appear to be a more suspension travel than I would expect given the tire travel. To me, that points to a bad strut. But the strut does not appear to have oil leaking from it. So then...
The strut cap/mount/bearing could be a culprit as that sound might be a loose cap or the bearing.
There could be something like exhaust banging against the body. That is simple to assess.
Then there might be an engine mount issue - but that is a reach.

It takes 15 minutes to pull the strut. If simple visual assessments and strong arming parts doesn't give you an answer, then pulling out the strut is what I would do. The cap should be tight and the piston difficult to compress.