How to split a Raw Audio Buffer with 2 channels within frame into two different buffer

      child(:source, %Membrane.RTMP.Source{
        socket: socket
      })
      |> child(:demuxer, Membrane.FLV.Demuxer)
      |> via_out(Pad.ref(:audio, 0))
      |> child(:audio_parser, %Membrane.AAC.Parser{})
      |> child(:audio_decoder, Membrane.AAC.FDK.Decoder)
      |> child(:converter, %Membrane.FFmpeg.SWResample.Converter{
        output_stream_format: %Membrane.RawAudio{
          sample_format: :f32le,
          sample_rate: 16_000,
          channels: 2
        }
      })