Save reolink Camerafootage to HA

Hello Guys

I found several options to save footage to HA. Unfortunately, none of them really satisfy me. Because if i click on the live preview, i can go back like 30 seconds. So there is already a video feed saved in HA all the time.
How can i just save it permanently?
I installed some FTP Server software from the add-on store, but unfortunately i cannot see the folder where clips are saved.

Does anyone has an idea how i can do this best?