HlsAudioOnlyContainer
Use this setting only in audio-only outputs. Choose MPEG-2 Transport Stream (M2TS) to create a file in an MPEG2-TS container. Keep the default value Automatic to create a raw audio-only file with no container. Regardless of the value that you specify here, if this output has video, the service will place outputs into an MPEG2-TS container.