Yes it works fine over RTSP in my case on the firmware and model mentioned above. I tested using the following format on VLC:
rtsp:/admin:[email protected]:554/Streaming/Channels/101
Upgraded Annke C800 I91BF from firmware V5.6.6 (210625) to V5.6.820 (210625) (not on download portal, need to be obtained from official website -> any G1 camera).
No issues so far
I recently bought a Lorex IP Camera but later found it was affected by the Dahua Generation 2/3 backdoor access. After finding out it was a Dahua rebrand (the WebUI looks identical), i searched for dahua-own firmware as it has a lot more customization and might cure the security flaw...