Video Conferencing on Android

Hi,

I wonder if there is an easy imlementation of video conferencing on Android.
I have one android public use device and many private use devices.

Using scenario :

User will select a private device to connect and public device will connect to that private device.
Server will send cam video and mic audio to connected private device and play only audio stream from connected private device.
Private device needs to send only mic audio to public device and play received streams.

Options tried are below :

• Streaming to devices from java. I cant find an easy way to implement it.
• Streaming using ffmpeg etc. It is still too low level for our system and high latency. I think I need to configure my ffserver.
• WebRTC, I only tried it on browsers level. It is slow sometimes and needs a server. I cant find any serverless implementation.

Any suggetions appreciated. Thanks.