Whatever the recording, audio just wants to be heard: the trick is picking a shape that plays where you need it. It comes from wherever your camera, screen recorder or download made it.
AVI is the veteran of desktop video: dependable in 1995, cranky about everything invented since. Audio Video Interleave: an early container that predates streaming and most codecs you'd use today. That makes it the right destination when what you need is opening old archives and humoring legacy Windows tools.