# RTMP ingest to WebRTC in 4.8
**URL:** https://community.wowza.com/t/rtmp-ingest-to-webrtc-in-4-8/55132
**Category:** Wowza Streaming Engine
**Tags:** webrtc
**Created:** [May 6, 2020, 4:37pm UTC](https://community.wowza.com/t/rtmp-ingest-to-webrtc-in-4-8/55132 "2020-05-06T16:37:37Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@Daniel\_Rossi](https://community.wowza.com/u/Daniel_Rossi)
#### Post date: [May 6, 2020, 4:37pm UTC](https://community.wowza.com/t/rtmp-ingest-to-webrtc-in-4-8/55132/1 "2020-05-06T16:37:37Z")
I just tried the suggested RTMP ingest to WebRTC and subscribing fails.
- Added support for RTMP/RTSP/SRT ingest and WebRTC output
I get this error on the play sample. Exactly like I am experiencing with IOS publishing right now.
"‘setRemoteDescription’ on ‘RTCPeerConnection’: _Failed to set remote offer sdp_\*: Failed to set remote video description send parameters\* "
---
### Author:  [@Daniel\_Rossi](https://community.wowza.com/u/Daniel_Rossi)
#### Post date: [May 7, 2020, 7:35am UTC](https://community.wowza.com/t/rtmp-ingest-to-webrtc-in-4-8/55132/2 "2020-05-07T07:35:52Z")
Here is the full offer and error. There is no candidate and the high h264 profile level which is breaking. The same result with IOS publishing I think.
webrtc-subscriber-7.2.7.js:9510 getOffer: v=0
o=WowzaStreamingEngine-next 192590802 2 IN IP4 127.0.0.1
s=-
t=0 0
a=fingerprint:sha-256 01:80:56:E4:BB:8A:F0:96:6C:21:B9:91:98:7E:39:3E:0E:E6:7A:A3:7F:D5:FB:7F:D0:2C:9C:14:9A:15:94:C7
a=group:BUNDLE video
a=ice-options:trickle
a=msid-semantic:WMS \*
m=video 9 RTP/SAVPF 97
a=rtpmap:97 H264/90000
a=fmtp:97 packetization-mode=1;profile-level-id=64C01F;sprop-parameter-sets=Z2QAH6zZQFAFuhAAAAMAEAAAAwPI8YMZYA==,aO+8sA==
a=framerate:30.0
a=control:trackID=1
c=IN IP4 0.0.0.0
a=sendrecv
a=ice-pwd:b41a180f0016e1a4fb2ded7a023841d1
a=ice-ufrag:479ac369
a=mid:video
a=msid:{ebd47bfc-8e8a-4024-8603-5822297091c7} {0de5c4c2-1095-407a-acea-fed260e5ac8a}
a=rtcp-fb:97 nack
a=rtcp-fb:97 nack pli
a=rtcp-fb:97 ccm fir
a=rtcp-mux
a=setup:actpass
a=ssrc:661197176 cname:{80b4f15f-90a8-4fc7-a06b-7794f43899b3}
17:34:04.726 webrtc-publisher-7.2.7.js:2144 simple-peer [6955d08] signal() +0ms
17:34:04.729 webrtc-publisher-7.2.7.js:2144 simple-peer [6955d08] destroy (error: InvalidAccessError: Failed to execute ‘setRemoteDescription’ on ‘RTCPeerConnection’: Failed to set remote offer sdp: Failed to set remote video description send parameters.) +4ms
17:34:04.731 webrtc-subscriber-7.2.7.js:9837 Error: InvalidAccessError: Failed to execute ‘setRemoteDescription’ on ‘RTCPeerConnection’: Failed to set remote offer sdp: Failed to set remote video description send parameters.
at makeError (webrtc-publisher-7.2.7.js:8017)
at webrtc-publisher-7.2.7.js:8219
---
### Author:  [@Daniel\_Rossi](https://community.wowza.com/u/Daniel_Rossi)
#### Post date: [May 7, 2020, 7:42am UTC](https://community.wowza.com/t/rtmp-ingest-to-webrtc-in-4-8/55132/3 "2020-05-07T07:42:44Z")
It’s the same error with webrtc publisher if the H264 level isnt filtered to “42e01f”, It does not like 64C028. Wowza refuses to send candidates.
getOffer: v=0
o=WowzaStreamingEngine-next 1209965586 2 IN IP4 127.0.0.1
s=-
t=0 0
a=fingerprint:sha-256 01:80:56:E4:BB:8A:F0:96:6C:21:B9:91:98:7E:39:3E:0E:E6:7A:A3:7F:D5:FB:7F:D0:2C:9C:14:9A:15:94:C7
a=group:BUNDLE video audio
a=ice-options:trickle
a=msid-semantic:WMS \*
m=video 9 RTP/SAVPF 97
a=rtpmap:97 H264/90000
a=fmtp:97 packetization-mode=1;profile-level-id=64C028;sprop-parameter-sets=Z2QAKKwrQDwBE/LCAAADAAIAAAMAeBtBEI1A,aM48MA==
a=framerate:30.0
a=control:trackID=2
c=IN IP4 0.0.0.0
a=sendrecv
a=ice-pwd:bc7f56704821b069aef1a0d63a4f85bb
a=ice-ufrag:de4af493
a=mid:video
a=msid:{d08b713c-5af1-4f7a-b920-14fa3ece2e78} {2249dbee-a68a-440f-b17c-7d3d8106a326}
a=rtcp-fb:97 nack
a=rtcp-fb:97 nack pli
a=rtcp-fb:97 ccm fir
a=rtcp-mux
a=setup:actpass
a=ssrc:478676847 cname:{fc9d1ffd-bbb3-4c3a-9db7-784ef765e62a}
m=audio 9 RTP/SAVPF 96
a=rtpmap:96 OPUS/48000/2
a=control:trackID=1
c=IN IP4 0.0.0.0
a=sendrecv
a=ice-pwd:bc7f56704821b069aef1a0d63a4f85bb
a=ice-ufrag:de4af493
a=mid:audio
a=msid:{d08b713c-5af1-4f7a-b920-14fa3ece2e78} {d6e91bcf-44a6-4888-879e-d1c39620b467}
a=rtcp-mux
a=setup:actpass
a=ssrc:745328323 cname:{fc9d1ffd-bbb3-4c3a-9db7-784ef765e62a}
---
### Author:  [@Daniel\_Rossi](https://community.wowza.com/u/Daniel_Rossi)
#### Post date: [May 7, 2020, 7:44am UTC](https://community.wowza.com/t/rtmp-ingest-to-webrtc-in-4-8/55132/4 "2020-05-07T07:44:31Z")
A working SDP that sends candidates
getOffer: v=0
o=WowzaStreamingEngine-next 1190238603 2 IN IP4 127.0.0.1
s=-
t=0 0
a=fingerprint:sha-256 01:80:56:E4:BB:8A:F0:96:6C:21:B9:91:98:7E:39:3E:0E:E6:7A:A3:7F:D5:FB:7F:D0:2C:9C:14:9A:15:94:C7
a=group:BUNDLE video audio
a=ice-options:trickle
a=msid-semantic:WMS \*
m=video 9 RTP/SAVPF 97
a=rtpmap:97 H264/90000
a=fmtp:97 packetization-mode=1;profile-level-id=42C01F;sprop-parameter-sets=Z0LAH2MjUBaGrzwDwiEagA==,aGzjyA==
a=control:trackID=2
c=IN IP4 0.0.0.0
a=sendrecv
a=ice-pwd:d2ae4d65f1629734f12f4ab1cfe972f5
a=ice-ufrag:6ea7c8cf
a=mid:video
a=msid:{e06c90e3-d7b8-4b3b-bb7d-6c410a5d0b15} {2936a891-8d75-48a8-acf8-75e272df61d9}
a=rtcp-fb:97 nack
a=rtcp-fb:97 nack pli
a=rtcp-fb:97 ccm fir
a=rtcp-mux
a=setup:actpass
a=ssrc:747857431 cname:{03801209-e571-4c72-a2dd-081aaa0ad8ed}
m=audio 9 RTP/SAVPF 96
a=rtpmap:96 OPUS/48000/2
a=control:trackID=1
c=IN IP4 0.0.0.0
a=sendrecv
a=ice-pwd:d2ae4d65f1629734f12f4ab1cfe972f5
a=ice-ufrag:6ea7c8cf
a=mid:audio
a=msid:{e06c90e3-d7b8-4b3b-bb7d-6c410a5d0b15} {7123c00d-9e68-4140-8ea2-1e7cdba2c6aa}
a=rtcp-mux
a=setup:actpass
a=ssrc:1828352266 cname:{03801209-e571-4c72-a2dd-081aaa0ad8ed}
---
### Author:  [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)
#### Post date: [May 8, 2020, 4:39pm UTC](https://community.wowza.com/t/rtmp-ingest-to-webrtc-in-4-8/55132/5 "2020-05-08T16:39:23Z")
We just published a new article on this today and maybe this will help:
[https://www.wowza.com/docs/ingest-rtsp-srt-or-rtmp-streams-into-wowza-streaming-engine-for-playback-with-webrtc](https://www.wowza.com/docs/ingest-rtsp-srt-or-rtmp-streams-into-wowza-streaming-engine-for-playback-with-webrtc)
If not, [send us a support ticket](https://www.wowza.com/support/open-ticket) and we’ll take a closer look. Tech support doesn’t debug in the forums.
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### Author:  [@Daniel\_Rossi](https://community.wowza.com/u/Daniel_Rossi)
#### Post date: [May 7, 2020, 7:30am UTC](https://community.wowza.com/t/rtmp-ingest-to-webrtc-in-4-8/55132/6 "2020-05-07T07:30:08Z")
I found this. I have that constraint configured. Still wont subscribe
[http://community.wowza.com/community/questions/44054/ingest-via-rtmp-and-play-via-webrtc.html](http://community.wowza.com/community/questions/44054/ingest-via-rtmp-and-play-via-webrtc.html)