FileMp3OutputMessage Field Type Repeated Description message oneOf ⮑subscription Subscription ⮑configuration FileMp3OutputConfiguration Argument of Method Description CreateOutputFileMp3 Output an MP3 (MPEG-audio) elementary stream to disk. Subscribed MP3 frames are written straight through with no re-encoding; any other audio is encoded to MP3 on the way in. The file is finalised and closed when the inbound context becomes empty. FileMp3OutputEvent FileMp4InputConfiguration