Symptom
The IOS mobile phone and the agent video call, the mobile phone local video screen and the seat video are equally screened, the phenomenon is as follows

Version Information
IPCCV200R00C80
problem causes
Since the upgrade of the IOS version may be due to the resolution adaptation problem, it is recommended to modify the resolution to 640x480, 1280x720, 1920x1080 for test analysis.
Processing steps
The openLocalVideo method and the setvideoMode method in the cconferenceManager class set the resolution to 640*480.