LinkPi ENC1-V3 What resolution files are recorded to USB?

LINKPI HD VIDEO ENCODE
1

Hello,

  1. Can you tell me what file container(s) the LinkPi ENC1-V3 uses when recording to an external storage, via USB?

  2. What resolution are files recorded to USB?

  3. "What is “Sub: 720P, 360P”?

Thank you very much