Wowza Server Engine で管理されている Axis カメラからビデオ/オーディオをストリーミングし、そのビデオ/オーディオを Firefox ブラウザに表示したいだけです。カメラからのストリーミング フロー (H264、AAC 16000) は、ffmpeg を使用して H264、AAC (48000) にトランスコードされます。これにより、Wowza が VP8、OPUS、および mpeg-ts にトランスコードした後、ブラウザで表示できる 2 つのオーディオ チャネル (SDP で表示可能) が生成されます。Chrome では正常に動作します。Firefox (テスト済みの 49 および 50beta) では、いくつかのエラーが発生します。
コンソールには次のように表示されます。
ICE failed, see about:webrtc for more details
about:webrtc を表示すると、次のようになります。
SDP ローカルから
a=candidate:0 1 UDP 2122252543 192.42.172.126 58085 typ host
SDPから遠い
a=candidate:0 1 TCP 50 192.42.172.189 6558 typ host generation 0
ログについて:webrtc:
(ice/WARNING) ICE(PC:1477400980285000 (id=110 url=<wowza/webrtc url>)): peer (PC:1477400980285000 (id=110 url=<wowza/webrtc url>):default) has no stream matching stream 0-1477400980285000 (id=110 url=<wowza/webrtc url>) aLevel=1
(ice/NOTICE) ICE(PC:1477400980285000 (id=110 url=<wowza/webrtc url>)): peer (PC:1477400980285000 (id=110 url=<wowza/webrtc url>):default) no streams with non-empty check lists
(ice/NOTICE) ICE(PC:1477400980285000 (id=110 url=<wowza/webrtc url>)): peer (PC:1477400980285000 (id=110 url=<wowza/webrtc url>):default) no streams with pre-answer requests
(ice/NOTICE) ICE(PC:1477400980285000 (id=110 url=<wowza/webrtc url>)): peer (PC:1477400980285000 (id=110 url=<wowza/webrtc url>):default) no checks to start
(ice/WARNING) ICE(PC:1477400980285000 (id=110 url=<wowza/webrtc url>)): Error parsing attribute: candidate:0 1 TCP 50 192.42.172.189 6558 typ host generation 0
(ice/INFO) ICE(PC:1477400980285000 (id=110 url=<wowza/webrtc url>)): peer (PC:1477400980285000 (id=110 url=<wowza/webrtc url>):default) Trickle grace period is over; marking every component with only failed pairs as failed.
(ice/INFO) ICE-PEER(PC:1477400980285000 (id=110 url=<wowza/webrtc url>):default)/STREAM(0-1477400980285000 (id=110 url=<wowza/webrtc url>) aLevel=0)/COMP(1): All pairs are failed, and grace period has elapsed. Marking component as failed.
(ice/INFO) ICE-PEER(PC:1477400980285000 (id=110 url=<wowza/webrtc url>):default): all checks completed success=0 fail=1
VHost.xml で webrtcIceCandidateIpAddresses の値を UDP で動作するように変更した場合 (つまり、wowza IP 192.42.172.189,tcp,6558 から 192.42.172.189,udp へ):
<Property>
<Name>webrtcIceCandidateIpAddresses</Name>
<Value>192.42.172.189,udp</Value>
<Type>String</Type>
</Property>
コンソールにも同じエラーが表示されます。about:webrtc には次のものがあります。
SDP ローカル
a=candidate:0 1 UDP 2122252543 192.42.172.126 50662 typ host
SDP遠隔
a=candidate:0 1 UDP 50 192.42.172.189 6974 typ host generation 0
ログについて:webrtc:
(ice/WARNING) ICE(PC:1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html)): peer (PC:1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html):default) has no stream matching stream 0-1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html) aLevel=1
(ice/NOTICE) ICE(PC:1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html)): peer (PC:1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html):default) no streams with non-empty check lists
(ice/NOTICE) ICE(PC:1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html)): peer (PC:1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html):default) no streams with pre-answer requests
(ice/NOTICE) ICE(PC:1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html)): peer (PC:1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html):default) no checks to start
(ice/INFO) ICE-PEER(PC:1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html):default)/CAND-PAIR(uCnR): setting pair to state FROZEN: uCnR|IP4:192.42.172.126:50662/UDP|IP4:192.42.172.189:6974/UDP(host(IP4:192.42.172.126:50662/UDP)|candidate:0 1 UDP 50 192.42.172.189 6974 typ host generation 0)
(ice/INFO) ICE(PC:1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html))/CAND-PAIR(uCnR): Pairing candidate IP4:192.42.172.126:50662/UDP (7e7f00ff):IP4:192.42.172.189:6974/UDP (32) priority=218992869886 (32fcfe01fe)
(ice/INFO) ICE-PEER(PC:1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html):default)/ICE-STREAM(0-1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html) aLevel=0): Starting check timer for stream.
(ice/INFO) ICE-PEER(PC:1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html):default)/CAND-PAIR(uCnR): setting pair to state WAITING: uCnR|IP4:192.42.172.126:50662/UDP|IP4:192.42.172.189:6974/UDP(host(IP4:192.42.172.126:50662/UDP)|candidate:0 1 UDP 50 192.42.172.189 6974 typ host generation 0)
(ice/INFO) ICE-PEER(PC:1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html):default)/CAND-PAIR(uCnR): setting pair to state IN_PROGRESS: uCnR|IP4:192.42.172.126:50662/UDP|IP4:192.42.172.189:6974/UDP(host(IP4:192.42.172.126:50662/UDP)|candidate:0 1 UDP 50 192.42.172.189 6974 typ host generation 0)
(ice/NOTICE) ICE(PC:1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html)): peer (PC:1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html):default) is now checking
(generic/EMERG) Error in recvfrom: -5961
(ice/WARNING) ICE-PEER(PC:1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html):default): no pairs for 0-1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html) aLevel=0
(generic/EMERG) Error in recvfrom: -5961
(generic/EMERG) Error in recvfrom: -5961
(generic/EMERG) Error in recvfrom: -5961
(generic/EMERG) Error in recvfrom: -5961
(generic/EMERG) Error in recvfrom: -5961
(ice/INFO) ICE(PC:1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html)): peer (PC:1477402453964000 (id=114 url=https://192.42.172.189:6560/webrtc/play/index.html):default) Trickle grace period is over; marking every component with only failed pairs as failed.
(generic/EMERG) Error in recvfrom: -5961
ネットで考えられる原因を検索して解決策を見つけようとしましたが、結果はありませんでした。誰か助けてくれませんか？
ありがとう、ディエゴ