mediasoup:3.5.15
mediasoup-client:3.6.7
codec:vp8
simulcast:yes
question: videoConsumer useNack:true, but videoProducer always useNack:false ; error throw by mediasoup, is anything wrong?
2020-09-24T09:41:09.332Z mediasoup:ERROR:Channel [pid:4747 webrtc::GoogCcNetworkController::OnRemoteBitrateReport() | Received REMB for packet feedback only GoogCC
producer.dump():
{
"id": "9106a98b-c9fd-4a20-bf3d-ec4fe096bdba",
"kind": "video",
"paused": false,
"rtpMapping": {
"codecs": [
{
"mappedPayloadType": 101,
"payloadType": 101
}
],
"encodings": [
{
"mappedSsrc": 562263627,
"rid": null,
"ssrc": 812637478
},
{
"mappedSsrc": 562263628,
"rid": null,
"ssrc": 812637479
},
{
"mappedSsrc": 562263629,
"rid": null,
"ssrc": 812637480
}
]
},
"rtpParameters": {
"codecs": [
{
"clockRate": 90000,
"mimeType": "video/VP8",
"parameters": {},
"payloadType": 101,
"rtcpFeedback": [
{
"parameter": "pli",
"type": "nack"
},
{
"parameter": "fir",
"type": "ccm"
}
]
}
],
"encodings": [
{
"codecPayloadType": 101,
"ksvc": false,
"scalabilityMode": "S1T3",
"spatialLayers": 1,
"ssrc": 812637478,
"temporalLayers": 3
},
{
"codecPayloadType": 101,
"ksvc": false,
"scalabilityMode": "S1T3",
"spatialLayers": 1,
"ssrc": 812637479,
"temporalLayers": 3
},
{
"codecPayloadType": 101,
"ksvc": false,
"scalabilityMode": "S1T3",
"spatialLayers": 1,
"ssrc": 812637480,
"temporalLayers": 3
}
],
"headerExtensions": [
{
"encrypt": false,
"id": 6,
"parameters": {},
"uri": "http://tools.ietf.org/html/draft-ietf-avtext-framemarking-07"
},
{
"encrypt": false,
"id": 7,
"parameters": {},
"uri": "urn:ietf:params:rtp-hdrext:framemarking"
},
{
"encrypt": false,
"id": 11,
"parameters": {},
"uri": "urn:3gpp:video-orientation"
},
{
"encrypt": false,
"id": 12,
"parameters": {},
"uri": "urn:ietf:params:rtp-hdrext:toffset"
}
],
"rtcp": {
"cname": "jcr6VMzn1AVb4Dp8",
"reducedSize": true
}
},
"rtpStreams": [
{
"params": {
"clockRate": 90000,
"cname": "jcr6VMzn1AVb4Dp8",
"mimeType": "video/VP8",
"payloadType": 101,
"spatialLayers": 1,
"ssrc": 812637478,
"temporalLayers": 3,
"useDtx": false,
"useFir": true,
"useInBandFec": false,
"useNack": false,
"usePli": true
},
"score": 10
},
{
"params": {
"clockRate": 90000,
"cname": "jcr6VMzn1AVb4Dp8",
"mimeType": "video/VP8",
"payloadType": 101,
"spatialLayers": 1,
"ssrc": 812637479,
"temporalLayers": 3,
"useDtx": false,
"useFir": true,
"useInBandFec": false,
"useNack": false,
"usePli": true
},
"score": 10
}
],
"traceEventTypes": "",
"type": "simulcast"
}
The codec rtcpFeedback does not announce support for generic “nack”, which is represented by:
{
"type": "nack"
}
Note there is no parameter property.
The client endpoint is not offering it. Which client endpoint are you using?
mediasoup-client:Chrome74
the code to create producer：
this._webcamProducer = await this._sendTransport.produce(
{
track,
encodings:[ { scaleResolutionDownBy: 4 },{ scaleResolutionDownBy: 2 },{ scaleResolutionDownBy: 1 }],
codecOptions :
{
videoGoogleStartBitrate : 1000
},
codec:{
clockRate: 90000,
kind: "video",
mimeType: "video/VP8",
parameters: {},
preferredPayloadType: 101,
rtcpFeedback:[
{type: "goog-remb", parameter: ""},
{type: "transport-cc", parameter: ""},
{type: "ccm", parameter: "fir"},
{type: "nack", parameter: ""},
{type: "nack", parameter: "pli"}}
]}
});
the config of server:
routerOptions :
{
mediaCodecs :
[
{
kind : 'audio',
mimeType : 'audio/opus',
clockRate : 48000,
channels : 2
},
{
kind : 'video',
mimeType : 'video/VP8',
clockRate : 90000,
parameters :
{
'x-google-start-bitrate' : 1000
}
},
{
kind : 'video',
mimeType : 'video/VP9',
clockRate : 90000,
parameters :
{
'profile-id' : 2,
'x-google-start-bitrate' : 1000
}
},
{
kind : 'video',
mimeType : 'video/h264',
clockRate : 90000,
parameters :
{
'packetization-mode' : 1,
'profile-level-id' : '64001f',
'level-asymmetry-allowed' : 1,
'x-google-start-bitrate' : 500
}
}
]
}
Also verify the RtpParameters you are providing to transport.produce() in server side.
in server-side
const producer = await transport.produce(
{
kind:'video'
rtpParameters:{
codecs: [
{
mimeType: 'video/VP8',
payloadType: 96,
clockRate: 90000,
parameters: {},
rtcpFeedback: [
{ type: 'goog-remb', parameter: '' },
{ type: 'transport-cc', parameter: '' },
{ type: 'ccm', parameter: 'fir' },
{ type: 'nack', parameter: '' },
{ type: 'nack', parameter: 'pli' }
]
},
{
mimeType: 'video/rtx',
payloadType: 97,
clockRate: 90000,
parameters: { apt: 96 },
rtcpFeedback: []
}
],
headerExtensions: [
{
uri: 'urn:ietf:params:rtp-hdrext:sdes:mid',
id: 4,
encrypt: false,
parameters: {}
},
{
uri: 'urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id',
id: 5,
encrypt: false,
parameters: {}
},
{
uri: 'urn:ietf:params:rtp-hdrext:sdes:repaired-rtp-stream-id',
id: 6,
encrypt: false,
parameters: {}
},
{
uri: 'http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time',
id: 2,
encrypt: false,
parameters: {}
},
{
uri: 'http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01',
id: 3,
encrypt: false,
parameters: {}
},
{
uri: 'urn:3gpp:video-orientation',
id: 13,
encrypt: false,
parameters: {}
},
{
uri: 'urn:ietf:params:rtp-hdrext:toffset',
id: 14,
encrypt: false,
parameters: {}
}
],
encodings: [
{
active: true,
scaleResolutionDownBy: 4,
rid: 'r0',
scalabilityMode: 'S1T3',
dtx: false
},
{
active: true,
scaleResolutionDownBy: 2,
rid: 'r1',
scalabilityMode: 'S1T3',
dtx: false
},
{
active: true,
scaleResolutionDownBy: 1,
rid: 'r2',
scalabilityMode: 'S1T3',
dtx: false
}
],
rtcp: { cname: '', reducedSize: true },
mid: '1'
}
});
producer.dump() showed that the given rtcpFeedback lacked the generic Nack method. That must come from not having provided it to transport.produce().
Please make sure you are providing transport.produce() with such rtcpFeedback. We don’t remove any rtcpFeedback from the given ones.