[{
      "decoders" : [
         {
            "codec_params" : [],
            "payload_name" : "VP9",
            "payload_type" : 124
         }
      ],
      "render_delay_ms" : 10,
      "rtp" : {
         "extensions" : [],
         "local_ssrc" : 7331,
         "nack" : {
            "rtp_history_ms" : 1000
         },
         "red_payload_type" : -1,
         "remb" : true,
         "remote_ssrc" : 1337,
         "rtcp_mode" : "RtcpMode::kCompound",
         "rtx_payload_types" : [],
         "rtx_ssrc" : 100,
         "transport_cc" : true,
         "ulpfec_payload_type" : -1
      },
      "target_delay_ms" : 0
}]