This should work if you choose 126 which is packetization mode 1 instead of 97 which is mode 0.
Also to try out H264, you can add to your about:config the setting 'media.navigator.video.preferred_codec' as an int type and set it to 126. That would make the test sites like talky.io or apprtc.appspot.com use H264 instead of VP8 without having to modify the SDP. -EH On Wed, Feb 25, 2015 at 3:58 AM, <[email protected]> wrote: > I've created a simple test in which the answer to receive video contains > only the H264 codec. The SPDs are: > Offer: > v=0 > o=Mozilla-SIPUA-35.0.1 3446 0 IN IP4 0.0.0.0 > s=SIP Call > t=0 0 > a=ice-ufrag:5e31d4db > a=ice-pwd:c4a974d252cb15f6a15852baffa3d72f > a=fingerprint:sha-256 > 21:2A:C3:90:E7:AB:B1:5C:83:75:CF:63:B0:CF:8C:81:77:76:37:1F:2C:27:D2:46:F9:6E:14:20:D9:9E:36:6D > m=video 9 RTP/SAVPF 120 126 97 > c=IN IP4 0.0.0.0 > a=rtpmap:120 VP8/90000 > a=rtpmap:126 H264/90000 > a=fmtp:126 profile-level-id=42e01f;packetization-mode=1 > a=rtpmap:97 H264/90000 > a=fmtp:97 profile-level-id=42e01f > a=sendrecv > a=rtcp-fb:120 nack > a=rtcp-fb:120 nack pli > a=rtcp-fb:120 ccm fir > a=rtcp-fb:126 nack > a=rtcp-fb:126 nack pli > a=rtcp-fb:126 ccm fir > a=rtcp-fb:97 nack > a=rtcp-fb:97 nack pli > a=rtcp-fb:97 ccm fir > a=setup:actpass > a=rtcp-mux > > Answer: > v=0 > o=Mozilla-SIPUA-35.0 1744 0 IN IP4 0.0.0.0 > s=SIP Call > t=0 0 > a=ice-ufrag:deaece8c > a=ice-pwd:ec2b99eb37c45908322798c4ebee1fa1 > a=fingerprint:sha-256 > BC:D5:15:B1:81:61:3E:BB:03:EC:12:CC:F4:70:43:85:C8:56:87:12:5D:11:03:6D:6B:2A:DD:2D:6A:3D:0E:59 > m=video 9 RTP/SAVPF 97 > c=IN IP4 0.0.0.0 > a=rtpmap:97 H264/90000 > a=sendrecv > a=fmtp:97 profile-level-id=42e01f > a=rtcp-fb:97 nack > a=rtcp-fb:97 nack pli > a=rtcp-fb:97 ccm fir > a=setup:active > a=rtcp-mux > > > The offer was generated using the createOffer function call of the > RTCPeerConnection. The answer was created from a modified SDP of the > createAnswer function. > > The test is: > <pre> > <!DOCTYPE html> > <html id="home" lang="en"> > <head><title>RTCPeerConnection Demo</title></head> > > <body> > <article> > <div style="text-align:center;"> > <div> > <video id="peer2-to-peer1" autoplay controls></video> > <h2>Offerer-to-Answerer</h2> > > </div> > <div> > <video id="peer1-to-peer2" autoplay controls></video> > <h2>Answerer-to-Offerer</h2> > > </div> > </div> > <script> > var mediaConstraints = { > optional: [], > mandatory: { > OfferToReceiveVideo: true > } > }; > </script> > > <script> > var offerer, answerer; > var offererToAnswerer = > document.getElementById('peer1-to-peer2'); > var answererToOfferer = > document.getElementById('peer2-to-peer1'); > > window.RTCPeerConnection = window.mozRTCPeerConnection || > window.webkitRTCPeerConnection; > window.RTCSessionDescription = > window.mozRTCSessionDescription || window.RTCSessionDescription; > window.RTCIceCandidate = window.mozRTCIceCandidate || > window.RTCIceCandidate; > > navigator.getUserMedia = navigator.mozGetUserMedia || > navigator.webkitGetUserMedia; > window.URL = window.webkitURL || window.URL; > </script> > > <script> > /* offerer */ > > function offererPeer(video_stream) { > offerer = new RTCPeerConnection(/*window.iceServers*/); > offerer.addStream(video_stream); > > offerer.onaddstream = function (event) { > offererToAnswerer.src = > URL.createObjectURL(event.stream); > offererToAnswerer.play(); > }; > > offerer.onicecandidate = function (event) { > if (!event || !event.candidate) return; > answerer.addIceCandidate(event.candidate); > }; > > offerer.createOffer(function (offer) { > console.log("Offer:"); > console.log(offer.sdp); > offerer.setLocalDescription(offer); > answererPeer(offer, video_stream); > }, function() {}, mediaConstraints); > } > </script> > > <script> > /* answerer */ > function answererPeer(offer, video_stream) { > answerer = new RTCPeerConnection(); > answerer.addStream(video_stream); > > answerer.onaddstream = function (event) { > answererToOfferer.src = > URL.createObjectURL(event.stream); > answererToOfferer.play(); > }; > > answerer.onicecandidate = function (event) { > if (!event || !event.candidate) return; > offerer.addIceCandidate(event.candidate); > }; > > answerer.setRemoteDescription(offer); > answerer.createAnswer(function (answer) { > sdp = "v=0\n" + > "o=Mozilla-SIPUA-35.0 1744 0 IN IP4 > 0.0.0.0\n" + > "s=SIP Call\n" + > "t=0 0\n" + > "a=ice-ufrag:" + > answer.sdp.split("a=ice-ufrag:")[1].split("\r")[0] + "\n" + > "a=ice-pwd:" + > answer.sdp.split("a=ice-pwd:")[1].substr(0, 32) + "\n" + > "a=fingerprint:" + "sha-256" + " " + > answer.sdp.split("a=fingerprint:")[1].split(" ")[1].split("\n")[0] + "\n" + > // H264 codec payload 126 > /* > "m=video 9 RTP/SAVPF 126\n" + > "c=IN IP4 0.0.0.0\n" + > "a=rtpmap:126 H264/90000\n" + > "a=sendrecv\n" + > "a=fmtp:126 > profile-level-id=42e01f;packetization-mode=1\n" + > "a=rtcp-fb:126 nack\n" + > "a=rtcp-fb:126 nack pli\n" + > "a=rtcp-fb:126 ccm fir\n" + > */ > // H264 codec payload 97 > "m=video 9 RTP/SAVPF 97\n" + > "c=IN IP4 0.0.0.0\n" + > "a=rtpmap:97 H264/90000\n" + > "a=sendrecv\n" + > "a=fmtp:97 profile-level-id=42e01f\n" + > "a=rtcp-fb:97 nack\n" + > "a=rtcp-fb:97 nack pli\n" + > "a=rtcp-fb:97 ccm fir\n" + > // VP8 codec > /* > "m=video 9 RTP/SAVPF 120\n" + > "c=IN IP4 0.0.0.0\n" + > "a=rtpmap:120 VP8/90000\n" + > "a=sendrecv\n" + > "a=rtcp-fb:120 nack\n" + > "a=rtcp-fb:120 nack pli\n" + > "a=rtcp-fb:120 ccm fir\n" + > */ > > "a=setup:active\r\n" + > "a=rtcp-mux\r\n"; > > console.log("Answer:"); > console.log(sdp); > > answer = new RTCSessionDescription({ > type: "answer", > sdp: sdp > }) > > answer.sdp = sdp; > answerer.setLocalDescription(answer); > offerer.setRemoteDescription(answer); > }, function() {}, mediaConstraints); > } > </script> > <script> > var video_constraints = { > mandatory: {}, > optional: [] > }; > > function getUserMedia(callback) { > var n = navigator; > n.getMedia = n.webkitGetUserMedia || n.mozGetUserMedia; > n.getMedia({ > video: video_constraints > }, callback, onerror); > > function onerror(e) { > alert(JSON.stringify(e, null, '\t')); > } > } > </script> > > <script> > getUserMedia(function (video_stream) { > offererPeer(video_stream); > }); > </script> > </article> > </body> > </html> > > </pre> > > The problem which I am having is that the test works for VP8 codec bu it > doesn't work for H264. Am I doing something wrong with the SDP? Is H264 > support fully implemented. > > Tested with Firefox 35.0.1| on Fedora 20, I've created a simple test in > which the answer to receive video contains only the H264 codec. The SPDs > are: > Offer: > v=0 > o=Mozilla-SIPUA-35.0.1 3446 0 IN IP4 0.0.0.0 > s=SIP Call > t=0 0 > a=ice-ufrag:5e31d4db > a=ice-pwd:c4a974d252cb15f6a15852baffa3d72f > a=fingerprint:sha-256 > 21:2A:C3:90:E7:AB:B1:5C:83:75:CF:63:B0:CF:8C:81:77:76:37:1F:2C:27:D2:46:F9:6E:14:20:D9:9E:36:6D > m=video 9 RTP/SAVPF 120 126 97 > c=IN IP4 0.0.0.0 > a=rtpmap:120 VP8/90000 > a=rtpmap:126 H264/90000 > a=fmtp:126 profile-level-id=42e01f;packetization-mode=1 > a=rtpmap:97 H264/90000 > a=fmtp:97 profile-level-id=42e01f > a=sendrecv > a=rtcp-fb:120 nack > a=rtcp-fb:120 nack pli > a=rtcp-fb:120 ccm fir > a=rtcp-fb:126 nack > a=rtcp-fb:126 nack pli > a=rtcp-fb:126 ccm fir > a=rtcp-fb:97 nack > a=rtcp-fb:97 nack pli > a=rtcp-fb:97 ccm fir > a=setup:actpass > a=rtcp-mux > > Answer: > v=0 > o=Mozilla-SIPUA-35.0 1744 0 IN IP4 0.0.0.0 > s=SIP Call > t=0 0 > a=ice-ufrag:deaece8c > a=ice-pwd:ec2b99eb37c45908322798c4ebee1fa1 > a=fingerprint:sha-256 > BC:D5:15:B1:81:61:3E:BB:03:EC:12:CC:F4:70:43:85:C8:56:87:12:5D:11:03:6D:6B:2A:DD:2D:6A:3D:0E:59 > m=video 9 RTP/SAVPF 97 > c=IN IP4 0.0.0.0 > a=rtpmap:97 H264/90000 > a=sendrecv > a=fmtp:97 profile-level-id=42e01f > a=rtcp-fb:97 nack > a=rtcp-fb:97 nack pli > a=rtcp-fb:97 ccm fir > a=setup:active > a=rtcp-mux > > > The offer was generated using the createOffer function call of the > RTCPeerConnection. The answer was created from a modified SDP of the > createAnswer function. > > The test is: > <pre> > <!DOCTYPE html> > <html id="home" lang="en"> > <head><title>RTCPeerConnection Demo</title></head> > > <body> > <article> > <div style="text-align:center;"> > <div> > <video id="peer2-to-peer1" autoplay controls></video> > <h2>Offerer-to-Answerer</h2> > > </div> > <div> > <video id="peer1-to-peer2" autoplay controls></video> > <h2>Answerer-to-Offerer</h2> > > </div> > </div> > <script> > var mediaConstraints = { > optional: [], > mandatory: { > OfferToReceiveVideo: true > } > }; > </script> > > <script> > var offerer, answerer; > var offererToAnswerer = > document.getElementById('peer1-to-peer2'); > var answererToOfferer = > document.getElementById('peer2-to-peer1'); > > window.RTCPeerConnection = window.mozRTCPeerConnection || > window.webkitRTCPeerConnection; > window.RTCSessionDescription = > window.mozRTCSessionDescription || window.RTCSessionDescription; > window.RTCIceCandidate = window.mozRTCIceCandidate || > window.RTCIceCandidate; > > navigator.getUserMedia = navigator.mozGetUserMedia || > navigator.webkitGetUserMedia; > window.URL = window.webkitURL || window.URL; > </script> > > <script> > /* offerer */ > > function offererPeer(video_stream) { > offerer = new RTCPeerConnection(/*window.iceServers*/); > offerer.addStream(video_stream); > > offerer.onaddstream = function (event) { > offererToAnswerer.src = > URL.createObjectURL(event.stream); > offererToAnswerer.play(); > }; > > offerer.onicecandidate = function (event) { > if (!event || !event.candidate) return; > answerer.addIceCandidate(event.candidate); > }; > > offerer.createOffer(function (offer) { > console.log("Offer:"); > console.log(offer.sdp); > offerer.setLocalDescription(offer); > answererPeer(offer, video_stream); > }, function() {}, mediaConstraints); > } > </script> > > <script> > /* answerer */ > function answererPeer(offer, video_stream) { > answerer = new RTCPeerConnection(); > answerer.addStream(video_stream); > > answerer.onaddstream = function (event) { > answererToOfferer.src = > URL.createObjectURL(event.stream); > answererToOfferer.play(); > }; > > answerer.onicecandidate = function (event) { > if (!event || !event.candidate) return; > offerer.addIceCandidate(event.candidate); > }; > > answerer.setRemoteDescription(offer); > answerer.createAnswer(function (answer) { > sdp = "v=0\n" + > "o=Mozilla-SIPUA-35.0 1744 0 IN IP4 > 0.0.0.0\n" + > "s=SIP Call\n" + > "t=0 0\n" + > "a=ice-ufrag:" + > answer.sdp.split("a=ice-ufrag:")[1].split("\r")[0] + "\n" + > "a=ice-pwd:" + > answer.sdp.split("a=ice-pwd:")[1].substr(0, 32) + "\n" + > "a=fingerprint:" + "sha-256" + " " + > answer.sdp.split("a=fingerprint:")[1].split(" ")[1].split("\n")[0] + "\n" + > // H264 codec payload 126 > /* > "m=video 9 RTP/SAVPF 126\n" + > "c=IN IP4 0.0.0.0\n" + > "a=rtpmap:126 H264/90000\n" + > "a=sendrecv\n" + > "a=fmtp:126 > profile-level-id=42e01f;packetization-mode=1\n" + > "a=rtcp-fb:126 nack\n" + > "a=rtcp-fb:126 nack pli\n" + > "a=rtcp-fb:126 ccm fir\n" + > */ > // H264 codec payload 97 > "m=video 9 RTP/SAVPF 97\n" + > "c=IN IP4 0.0.0.0\n" + > "a=rtpmap:97 H264/90000\n" + > "a=sendrecv\n" + > "a=fmtp:97 profile-level-id=42e01f\n" + > "a=rtcp-fb:97 nack\n" + > "a=rtcp-fb:97 nack pli\n" + > "a=rtcp-fb:97 ccm fir\n" + > // VP8 codec > /* > "m=video 9 RTP/SAVPF 120\n" + > "c=IN IP4 0.0.0.0\n" + > "a=rtpmap:120 VP8/90000\n" + > "a=sendrecv\n" + > "a=rtcp-fb:120 nack\n" + > "a=rtcp-fb:120 nack pli\n" + > "a=rtcp-fb:120 ccm fir\n" + > */ > > "a=setup:active\r\n" + > "a=rtcp-mux\r\n"; > > console.log("Answer:"); > console.log(sdp); > > answer = new RTCSessionDescription({ > type: "answer", > sdp: sdp > }) > > answer.sdp = sdp; > answerer.setLocalDescription(answer); > offerer.setRemoteDescription(answer); > }, function() {}, mediaConstraints); > } > </script> > <script> > var video_constraints = { > mandatory: {}, > optional: [] > }; > > function getUserMedia(callback) { > var n = navigator; > n.getMedia = n.webkitGetUserMedia || n.mozGetUserMedia; > n.getMedia({ > video: video_constraints > }, callback, onerror); > > function onerror(e) { > alert(JSON.stringify(e, null, '\t')); > } > } > </script> > > <script> > getUserMedia(function (video_stream) { > offererPeer(video_stream); > }); > </script> > </article> > </body> > </html> > > </pre> > > The problem which I am having is that the test works for VP8 codec but it > doesn't work for H264. > Am I doing something wrong with the SDP negotiation? > Is H264 support implemented all the way or only the negotiation part is > implemented? > > Tested with Firefox 35.0.1| on Fedora 20, OpenH264 1.3. > _______________________________________________ > dev-media mailing list > [email protected] > https://lists.mozilla.org/listinfo/dev-media > _______________________________________________ dev-media mailing list [email protected] https://lists.mozilla.org/listinfo/dev-media
