hmm not sure, I just use latest chrome on my MacBook and get video feed without any plugins. Camera is a ipc-t5442t-zeb running firmware out of the box 2.820.15OG001.0.R, Build Date: 2021-07-06
hit playback tab and files are there
Dmss app you hit icon that looks like a movie reel ( far left) and you get a time slider with all notifications