Recording audio + video conference at server side using node js & kurento media server

I'm running Kurento examples hello world & one 2 one call from Kurento documentation. Now I want to record audio + video video conference at server side using Kurento Media server and NodeJs. I need only a small piece of code to record video and audio. The budget of this work is $25. Please bid only if you can do.I'm already a developer and tried but stuck in the recording part.