Live action footage and CG


I am facing some obstacles at the moment to find some great resources for live action footage to use them in compositing and matchmoving with CG, I have been searching a lot to find something close to what the movies present, those footages must contain acting or action and the quality suppose to be in 4K or 8K
do you have an idea from where or how I can get that?

something close to this video in the part when the solider run through.


You’ll either need to shoot your own footage, or find some stock footage, which won’t be cheap or easy to find as you’ll most likely be looking for something specific and lends itself to compositing work. You might look at the usual places for stock just to see if you can find something.