The record destination for livestreaming is always set to be the iPad on which the AeroCaster LIVE app is installed, and this can’t be changed. You might consider the following workarounds.

• It’s possible to output livestreamed video via HDMI from a USB-C Digital AV Multiport adapter that’s connected to your iPad. To record a live stream in real time, use a recorder that features an HDMI connector.
  NOTE: You can get only video signals through the HDMI connection. Audio signals cannot be output.
• You can connect the iPad to your computer with a cable or via a cloud-based service, and save the recorded file to your computer, an SD card or other location or media.