A: Yes. It does not require root access and has no malware/viruses.
"...Plus facecam support for live reactions." ifun screen recorder for android
A: No. You can record for 1 hour or 10 hours, depending only on your phone storage. A: Yes
Configure settings, such as Resolution (1080p) and Audio Source (Internal vs. Microphone). ifun screen recorder for android
For a look at how top-tier recorders are using automated editing and zoom features: