CodecSorterUserCodecList

Example

//Google Chrome 54
 codecList = {
   "sections":[
     {
       "kind":"audio",
       "codec":
         [
           "opus/48000/2",
           "ISAC/16000",
           "ISAC/32000",
           "G722/8000",
           "PCMU/8000",
           "PCMA/8000",
           "CN/32000",
           "CN/16000",
           "CN/8000",
           "telephone-event/8000"
         ]
     },
     {
       "kind":"video",
       "codec":
         [
           "VP8/90000",
           "VP9/90000",
           "H264/90000",
           "red/90000",
           "ulpfec/90000",
           "rtx/90000",
           "rtx/90000",
           "rtx/90000",
           "rtx/90000"
         ]
     }
   ]
 }