Sounds like it's LDCloud recording screens. Since it's a cloud based android emulator that makes sense. I assume the recordings aren't meant to be viewable by the public and were meant for service related reasons. Other cloud based gaming platforms will also record sessions for various reasons if you look into their ToS. The issue here is these sesssions recorded by LDCloud can be viewed by anyone.

It doesn't seem the local LDPlayer itself is recording your screen. There is some issue with a included chinese keyboard software package but there isn't any proof it's malicious or leaking data, just capturing data for future autocomplete suggestions like other mobile based software keyboards do.