[
   {
      "decoders" : [
         {
            "codec_params" : [],
            "payload_name" : "VP9",
            "payload_type" : 96
         }
      ],
      "render_delay_ms" : 10,
      "rtp" : {
         "extensions" : [
            {
               "encrypt" : false,
               "id" : 5,
               "uri" : "http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01"
            },
            {
               "encrypt" : false,
               "id" : 3,
               "uri" : "http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time"
            },
            {
               "encrypt" : false,
               "id" : 6,
               "uri" : "http://www.webrtc.org/experiments/rtp-hdrext/playout-delay"
            },
            {
               "encrypt" : false,
               "id" : 7,
               "uri" : "http://www.webrtc.org/experiments/rtp-hdrext/video-content-type"
            },
            {
               "encrypt" : false,
               "id" : 8,
               "uri" : "http://www.webrtc.org/experiments/rtp-hdrext/video-timing"
            },
            {
               "encrypt" : false,
               "id" : 4,
               "uri" : "urn:3gpp:video-orientation"
            },
            {
               "encrypt" : false,
               "id" : 2,
               "uri" : "urn:ietf:params:rtp-hdrext:toffset"
            }
         ],
         "local_ssrc" : 1,
         "nack" : {
            "rtp_history_ms" : 1000
         },
         "red_payload_type" : 100,
         "remb" : true,
         "remote_ssrc" : 359403851,
         "rtcp_mode" : "RtcpMode::kReducedSize",
         "rtx_payload_types" : [
            {
               "97" : 96
            },
            {
               "101" : 100
            }
         ],
         "rtx_ssrc" : 1732909516,
         "transport_cc" : true,
         "ulpfec_payload_type" : 127
      },
      "target_delay_ms" : 0
   }
]