1. QCIF (176×144) 15fps
2. CIF (352×288) 15fps
3. VGA (640×480) 15fps
4. HD (1280×720) 13fps
The default video resolution set on lync server normally is VGA .
1. How to know about it?
The answer is here.
2. How to change video resolution it?
Open lync server management shell in administrator mode.
Now give following command ---
Set-CsMediaConfiguration –Identity Global -MaxVideoRateAllowed Hd720p15MThe underline attribute can be either Hd720p15M, VGA600K, and CIF250K.
3. How to make sure that configuration is applied?
The answer in here.