How to concat multiple audio inputs without using files

Thank you for this wonderful library! I am wondering how I can translate the code below to be able to concatenate multiple opus audio files using the `BytesIO` API. In this contrived example I am reading files off disk, but in reality I am reading files from S3. I am trying to avoid any intermediate writes to disk and instead just stream directly to ffmpeg. Is this possible? ```py from pathlib import Path import ffmpeg input = Path.cwd().joinpath("input.txt") with input.open("w") as f: for i, obj in enumerate(Path.cwd().glob("recording*.webm")): content = Path.cwd().joinpath(f"input-{i}.webm") content.write_bytes(obj.read_bytes()) f.write(f"file '{content}'\n") output = Path.cwd().joinpath("combined.webm") ffmpeg.input(str(input), format="concat", safe=0).output(str(output), c="copy").run() ```