Google Cast is used by most Android devices as well as Chrome OS and when casting from the Chrome browser. AirServer provides Google Cast mirroring only. Google Cast relies on Bonjour mDNS for discovery.
Google Cast mirroring streams are encoded in H.264 or VP8 formats and transmitted as UDP packets. Most Android devices encode Google Cast at a resolution of 720p at 30 fps, but Chrome OS and casting from the Chrome browser as well as a few devices offer higher resolution. Maximum bitrate can be as high as 20 Mbps but average bitrates will be significantly lower.
Latency for Google Cast on AirServer is around 400 ms under good network conditions.
Most devices will not transmit video protected with Digital Rights Management (DRM) such as Netflix for copyright and legal reasons, this however is device vendor specific and is a limitation set by the content providers.