Can 'Amazon Kinesis Video Streams WebRTC' store live stream video?

Hi,

It seems that "Amazon Kinesis Video Streams WebRTC ingestion", still in preview as of now, will be the solution to your requirements. See https://docs.aws.amazon.com/kinesisvideostreams-webrtc-dg/latest/devguide/webrtc-ingestion.html

Amazon Kinesis Video Streams offers capabilities to stream video and audio 
in real-time via WebRTC to the cloud for storage, playback, and analytical processing. 

This page shows how to ingest the video (limited to 5 min during preview).

On your second question, this blog post https://aws.amazon.com/blogs/media/enabling-video-chats-using-amazon-kinesis-video-streams-for-webrtc/ has a very precise description on how to create such a signalling channel.

Best,

Didier