This example will take an audio and video track and save it into a local webm file.
Quick Start
Start ion-sfu allrpc, and run pubsubtest example in your browser and you join with your web camera to add an audio/video track to the "test session" room.
Run the script
go run main.go -addr "localhost:5551" -session "ion"
Your video or audio track will be saved and can be accessed after quitting the application with Control + C