Recording video of AWS Kinesis WebRTC streaming to the host machine

Hello all,

I am currently trying to set up WebRTC streaming with my Raspberry Pi Zero 2 W. WebRTC streaming setup is done and able to view over the mobile device with aws kinesis js-sdk. I need to also do the motion detection and video recording over the Raspberry pi, so looking for the any solution or sdk that can help to capture the video frame from Aws kinesis Webrtc so that I can make use in Python opencv library or any other way. Help is very important here as I have given enough time on research. If there is any way then please suggest.