Hiii

Estoy usando el servidor de medios Kurento en mi proyecto webrtc. Quiero aumentar la calidad del video para mi llamada web.

Setmaxsend / recbandwith () no funciona para un valor superior a 500 kb.

Quiero cambiar el ancho de banda máximo, dime cómo puedo hacerlo.

Lo que necesito:

  1. ¿Hay alguna forma de hacerlo?
  2. ¿Puedo encontrar la variable real que se usa para definir el ancho de banda?
  3. Quiero establecer un ancho de banda máximo de 2000 kb.

Mi Sdp

v=0\r\n' +
    'o=- 594779498531068541 2 IN IP4 127.0.0.1\r\n' +
    's=-\r\n' +
    't=0 0\r\n' +
    'a=group:BUNDLE 0 1\r\n' +
    'a=msid-semantic: WMS yLSrYTOKMcyDlIv8Sqhr5RW0DNPgo984JnC1\r\n' +
    'm=audio 9 UDP/TLS/RTP/SAVPF 111 103 104 9 0 8 106 105 13 110 112 113 126\r\n' +
    'c=IN IP4 0.0.0.0\r\n' +
    'a=rtcp:9 IN IP4 0.0.0.0\r\n' +
    'a=ice-ufrag:nSy7\r\n' +
    'a=ice-pwd:RM/BPZmvUexKN0Sjm+/hCIbz\r\n' +
    'a=ice-options:trickle\r\n' +
    'a=fingerprint:sha-256 46:C6:8C:6A:ED:6C:C0:13:CC:EB:6E:D0:A3:76:12:DA:87:D6:B2:B8:D3:29:F8:CB:D3:FF:FE:96:BF:8F:F3:A6\r\n' +
    'a=setup:actpass\r\n' +
    'a=mid:0\r\n' +
    'a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level\r\n' +
    'a=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time\r\n' +
    'a=extmap:3 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01\r\n' +
    'a=extmap:4 urn:ietf:params:rtp-hdrext:sdes:mid\r\n' +
    'a=extmap:5 urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id\r\n' +
    'a=extmap:6 urn:ietf:params:rtp-hdrext:sdes:repaired-rtp-stream-id\r\n' +
    'a=sendrecv\r\n' +
    'a=msid:yLSrYTOKMcyDlIv8Sqhr5RW0DNPgo984JnC1 eb8b778d-91b1-4c0f-b176-3dcc4dff00e0\r\n' +
    'a=rtcp-mux\r\n' +
    'a=rtpmap:111 opus/48000/2\r\n' +
    'a=rtcp-fb:111 transport-cc\r\n' +
    'a=fmtp:111 minptime=10;useinbandfec=1\r\n' +
    'a=rtpmap:103 ISAC/16000\r\n' +
    'a=rtpmap:104 ISAC/32000\r\n' +
    'a=rtpmap:9 G722/8000\r\n' +
    'a=rtpmap:0 PCMU/8000\r\n' +
    'a=rtpmap:8 PCMA/8000\r\n' +
    'a=rtpmap:106 CN/32000\r\n' +
    'a=rtpmap:105 CN/16000\r\n' +
    'a=rtpmap:13 CN/8000\r\n' +
    'a=rtpmap:110 telephone-event/48000\r\n' +
    'a=rtpmap:112 telephone-event/32000\r\n' +
    'a=rtpmap:113 telephone-event/16000\r\n' +
    'a=rtpmap:126 telephone-event/8000\r\n' +
    'a=ssrc:3075742303 cname:XuMK8Lp2rvft5uMI\r\n' +
    'a=ssrc:3075742303 msid:yLSrYTOKMcyDlIv8Sqhr5RW0DNPgo984JnC1 eb8b778d-91b1-4c0f-b176-3dcc4dff00e0\r\n' +
    'a=ssrc:3075742303 mslabel:yLSrYTOKMcyDlIv8Sqhr5RW0DNPgo984JnC1\r\n' +
    'a=ssrc:3075742303 label:eb8b778d-91b1-4c0f-b176-3dcc4dff00e0\r\n' +
    'm=video 9 UDP/TLS/RTP/SAVPF 96 97 98 99 100 101 102 121 127 120 125 107 108 109 124 119 123 118 114 115 116\r\n' +
    'c=IN IP4 0.0.0.0\r\n' +
    'a=rtcp:9 IN IP4 0.0.0.0\r\n' +
    'a=ice-ufrag:nSy7\r\n' +
    'a=ice-pwd:RM/BPZmvUexKN0Sjm+/hCIbz\r\n' +
    'a=ice-options:trickle\r\n' +
    'a=fingerprint:sha-256 46:C6:8C:6A:ED:6C:C0:13:CC:EB:6E:D0:A3:76:12:DA:87:D6:B2:B8:D3:29:F8:CB:D3:FF:FE:96:BF:8F:F3:A6\r\n' +
    'a=setup:actpass\r\n' +
    'a=mid:1\r\n' +
    'a=extmap:14 urn:ietf:params:rtp-hdrext:toffset\r\n' +
    'a=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time\r\n' +
    'a=extmap:13 urn:3gpp:video-orientation\r\n' +
    'a=extmap:3 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01\r\n' +
    'a=extmap:12 http://www.webrtc.org/experiments/rtp-hdrext/playout-delay\r\n' +
    'a=extmap:11 http://www.webrtc.org/experiments/rtp-hdrext/video-content-type\r\n' +
    'a=extmap:7 http://www.webrtc.org/experiments/rtp-hdrext/video-timing\r\n' +
    'a=extmap:8 http://www.webrtc.org/experiments/rtp-hdrext/color-space\r\n' +
    'a=extmap:4 urn:ietf:params:rtp-hdrext:sdes:mid\r\n' +
    'a=extmap:5 urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id\r\n' +
    'a=extmap:6 urn:ietf:params:rtp-hdrext:sdes:repaired-rtp-stream-id\r\n' +
    'a=sendrecv\r\n' +
    'a=msid:yLSrYTOKMcyDlIv8Sqhr5RW0DNPgo984JnC1 a0a25d11-697e-4b2d-bf43-60c9e59291d6\r\n' +
    'a=rtcp-mux\r\n' +
    'a=rtcp-rsize\r\n' +
    'a=rtpmap:96 VP8/90000\r\n' +
    'a=rtcp-fb:96 goog-remb\r\n' +
    'a=rtcp-fb:96 transport-cc\r\n' +
    'a=rtcp-fb:96 ccm fir\r\n' +
    'a=rtcp-fb:96 nack\r\n' +
    'a=rtcp-fb:96 nack pli\r\n' +
    'a=rtpmap:97 rtx/90000\r\n' +
    'a=fmtp:97 apt=96\r\n' +
    'a=rtpmap:98 VP9/90000\r\n' +
    'a=rtcp-fb:98 goog-remb\r\n' +
    'a=rtcp-fb:98 transport-cc\r\n' +
    'a=rtcp-fb:98 ccm fir\r\n' +
    'a=rtcp-fb:98 nack\r\n' +
    'a=rtcp-fb:98 nack pli\r\n' +
    'a=fmtp:98 profile-id=0\r\n' +
    'a=rtpmap:99 rtx/90000\r\n' +
    'a=fmtp:99 apt=98\r\n' +
    'a=rtpmap:100 VP9/90000\r\n' +
    'a=rtcp-fb:100 goog-remb\r\n' +
    'a=rtcp-fb:100 transport-cc\r\n' +
    'a=rtcp-fb:100 ccm fir\r\n' +
    'a=rtcp-fb:100 nack\r\n' +
    'a=rtcp-fb:100 nack pli\r\n' +
    'a=fmtp:100 profile-id=2\r\n' +
    'a=rtpmap:101 rtx/90000\r\n' +
    'a=fmtp:101 apt=100\r\n' +
    'a=rtpmap:102 H264/90000\r\n' +
    'a=rtcp-fb:102 goog-remb\r\n' +
    'a=rtcp-fb:102 transport-cc\r\n' +
    'a=rtcp-fb:102 ccm fir\r\n' +
    'a=rtcp-fb:102 nack\r\n' +
    'a=rtcp-fb:102 nack pli\r\n' +
    'a=fmtp:102 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f\r\n' +
    'a=rtpmap:121 rtx/90000\r\n' +
    'a=fmtp:121 apt=102\r\n' +
    'a=rtpmap:127 H264/90000\r\n' +
    'a=rtcp-fb:127 goog-remb\r\n' +
    'a=rtcp-fb:127 transport-cc\r\n' +
    'a=rtcp-fb:127 ccm fir\r\n' +
    'a=rtcp-fb:127 nack\r\n' +
    'a=rtcp-fb:127 nack pli\r\n' +
    'a=fmtp:127 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42001f\r\n' +
    'a=rtpmap:120 rtx/90000\r\n' +
    'a=fmtp:120 apt=127\r\n' +
    'a=rtpmap:125 H264/90000\r\n' +
    'a=rtcp-fb:125 goog-remb\r\n' +
    'a=rtcp-fb:125 transport-cc\r\n' +
    'a=rtcp-fb:125 ccm fir\r\n' +
    'a=rtcp-fb:125 nack\r\n' +
    'a=rtcp-fb:125 nack pli\r\n' +
    'a=fmtp:125 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f\r\n' +
    'a=rtpmap:107 rtx/90000\r\n' +
    'a=fmtp:107 apt=125\r\n' +
    'a=rtpmap:108 H264/90000\r\n' +
    'a=rtcp-fb:108 goog-remb\r\n' +
    'a=rtcp-fb:108 transport-cc\r\n' +
    'a=rtcp-fb:108 ccm fir\r\n' +
    'a=rtcp-fb:108 nack\r\n' +
    'a=rtcp-fb:108 nack pli\r\n' +
    'a=fmtp:108 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42e01f\r\n' +
    'a=rtpmap:109 rtx/90000\r\n' +
    'a=fmtp:109 apt=108\r\n' +
    'a=rtpmap:124 H264/90000\r\n' +
    'a=rtcp-fb:124 goog-remb\r\n' +
    'a=rtcp-fb:124 transport-cc\r\n' +
    'a=rtcp-fb:124 ccm fir\r\n' +
    'a=rtcp-fb:124 nack\r\n' +
    'a=rtcp-fb:124 nack pli\r\n' +
    'a=fmtp:124 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=4d001f\r\n' +
    'a=rtpmap:119 rtx/90000\r\n' +
    'a=fmtp:119 apt=124\r\n' +
    'a=rtpmap:123 H264/90000\r\n' +
    'a=rtcp-fb:123 goog-remb\r\n' +
    'a=rtcp-fb:123 transport-cc\r\n' +
    'a=rtcp-fb:123 ccm fir\r\n' +
    'a=rtcp-fb:123 nack\r\n' +
    'a=rtcp-fb:123 nack pli\r\n' +
    'a=fmtp:123 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=64001f\r\n' +
    'a=rtpmap:118 rtx/90000\r\n' +
    'a=fmtp:118 apt=123\r\n' +
    'a=rtpmap:114 red/90000\r\n' +
    'a=rtpmap:115 rtx/90000\r\n' +
    'a=fmtp:115 apt=114\r\n' +
    'a=rtpmap:116 ulpfec/90000\r\n' +
    'a=ssrc-group:FID 860428813 4198649496\r\n' +
    'a=ssrc:860428813 cname:XuMK8Lp2rvft5uMI\r\n' +
    'a=ssrc:860428813 msid:yLSrYTOKMcyDlIv8Sqhr5RW0DNPgo984JnC1 a0a25d11-697e-4b2d-bf43-60c9e59291d6\r\n' +
    'a=ssrc:860428813 mslabel:yLSrYTOKMcyDlIv8Sqhr5RW0DNPgo984JnC1\r\n' +
    'a=ssrc:860428813 label:a0a25d11-697e-4b2d-bf43-60c9e59291d6\r\n' +
    'a=ssrc:4198649496 cname:XuMK8Lp2rvft5uMI\r\n' +
    'a=ssrc:4198649496 msid:yLSrYTOKMcyDlIv8Sqhr5RW0DNPgo984JnC1 a0a25d11-697e-4b2d-bf43-60c9e59291d6\r\n' +
    'a=ssrc:4198649496 mslabel:yLSrYTOKMcyDlIv8Sqhr5RW0DNPgo984JnC1\r\n' +
    'a=ssrc:4198649496 label:a0a25d11-697e-4b2d-bf43-60c9e59291d6\r\n'

Mi código que genera este sdp

        return new Promise((resolve, reject) => {

            webRtcPeer = kurentoUtils.WebRtcPeer.WebRtcPeerSendrecv(options, function(
                error) {
                if (error) {
                    reject(error)
                    console.error(error);
                    setCallState(NO_CALL);
                }

                this.generateOffer(function(error, offerSdp) {
                    if (error) {
                        console.error(error);
                        setCallState(NO_CALL);
                    }
                    console.log(offerSdp)
                    var message = {
                        id: 'call',
                        from: LOCAL_USER_ID,
                        name: userObject.firstName + " " + userObject.lastName,
                        to: id,
                        sdpOffer: offerSdp
                    };

                    socket.emit('message', message)
                });
            });

        })
    }

Mi método de llamada completo tal vez ayude

    async function kurentoCall(id) {
        if (typeof AdapterJS !== 'undefined' && AdapterJS.webrtcDetectedBrowser === 'IE' && AdapterJS.webrtcDetectedVersion >= 9) {
            await navigator.getUserMedia(constraints, function(stream) {
                local_video_stream = stream;
            }, (err) => console.log(err));
        } else {
            await navigator.mediaDevices.getUserMedia(constraints).then(function(stream) {
                console.log("video stream acquired")
                local_video_stream = stream;
            }).catch((err) => console.log(err));
        }

        if (!local_video_stream) {
            console.log(local_video_stream)
            console.log("No stream")
            return;
        }
        var options = {
            localVideo: videoInput,
            remoteVideo: videoOutput,
            videoStream: local_video_stream,
            onicecandidate: onIceCandidate
        }
        return new Promise((resolve, reject) => {

            webRtcPeer = kurentoUtils.WebRtcPeer.WebRtcPeerSendrecv(options, function(
                error) {
                if (error) {
                    reject(error)
                    console.error(error);
                    setCallState(NO_CALL);
                }

                this.generateOffer(function(error, offerSdp) {
                    if (error) {
                        console.error(error);
                        setCallState(NO_CALL);
                    }
                    console.log(offerSdp)
                    var message = {
                        id: 'call',
                        from: LOCAL_USER_ID,
                        name: userObject.firstName + " " + userObject.lastName,
                        to: id,
                        sdpOffer: offerSdp
                    };

                    socket.emit('message', message)
                });
            });

        })
    }
0
Kunal Gupta 20 ene. 2021 a las 12:25

1 respuesta

La mejor respuesta

Cambié el atributo de ancho de banda SDP cuando fui a crear una respuesta:

function changeSDP( offer ) {
    let audioBandwidth = 2000
    let videoBandwidth = 2000
    // splitting the sdp every line
    let sdp = offer.split('\r\n');
    let new_sdp = '';
    let position = null;
    
    sdp = sdp.slice(0, -1);
    // looping over every line to identify where the bandwidth lines are
    for(let i = 0; i < sdp.length; i++) { 
        if(sdp[i].match('b=AS:')) {
            position = i;
        }
    }
    if(position) {
        sdp.splice(position, 1);
    }
    // looping over the truncated sdp to replace the bandwidth attributes
    for(let i = 0; i < sdp.length; i++) {
        // matching video bandwidth
        if(sdp[i].match('m=video')) {
            new_sdp += sdp[i] + '\r\n' + 'b=AS:' + videoBandwidth + '\r\n';
        } else {
            if(sdp[i].match('m=audio')) {
                // current line is the audio bandwidth line, replace it
                new_sdp += sdp[i] + '\r\n' + 'b=AS:' + audioBandwidth + '\r\n';
            }
            else {
                // the sdp doesn't need to be changed, use the old sdp
                new_sdp += sdp[i] + '\r\n';
            }
        }
    }
    // return the old sdp
    return new_sdp;
}

ChangeSDP toma el sdp de la respuesta y obliga al SDP a utilizar los parámetros dados.

Aquí hay un ejemplo (incompleto) de cómo usarlo:

answer = await pc.createAnswer();
answer.sdp = changeSDP( oldSDP )
await pc.setLocalDescription( answer );
1
divinelemon 21 ene. 2021 a las 22:31