Whether HD or SD, all are encrypted and will not be playable via VLC.
https://forums.digitalspy.com/discussion/comment/67770386#Comment_67770386
That poster is very reliable.
I didn’t post the link on your other thread because I could not find it when I looked the other day.
There is also a DS member who transferred the HDD from one model of the same type as yours to another of the same type, and could see the recordings, but they didn’t confirm where they would play or not.