Having both RTP/SAVPF and UDP/TLS/RTP/SAVPF in the same SDP

[Paul Ghanime]

Hi,

It seems like when trying to set the remote description below:

WCGCall -> SDP OFFER from network: 

v=0

o=- 3603306972663818083 2 IN IP4 129.192.188.180

s=-

t=0 0

a=ice-lite

m=audio 1484 UDP/TLS/RTP/SAVP 111 9 0 8 126

c=IN IP4 192.75.89.10

a=mid:audio

a=sendrecv

a=rtpmap:111 opus/48000/2

a=rtcp-fb:111 transport-cc

a=fmtp:111 minptime=10; useinbandfec=1

a=rtpmap:9 G722/8000

a=rtpmap:0 PCMU/8000

a=rtpmap:8 PCMA/8000

a=rtpmap:126 telephone-event/8000

a=maxptime:60

a=3ge2ae:applied

a=setup:actpass

a=fingerprint:SHA-1 3D:95:53:11:ED:33:BE:0F:E8:69:42:0B:D2:DA:D3:53:A8:CD:7A:D0

a=candidate:1 1 UDP 2130706431 192.75.89.10 1484 typ host

a=candidate:1 2 UDP 2130706430 192.75.89.10 1485 typ host

a=rtcp:1485

a=ice-ufrag:kpcd

a=ice-pwd:TA4VCR/sfCFatROp+bKVH7G2

m=video 1486 RTP/SAVPF 100 101 116 117 96 97 98

c=IN IP4 192.75.89.10

a=mid:video

a=sendrecv

a=rtpmap:100 VP8/90000

a=rtcp-fb:100 ccm fir

a=rtcp-fb:100 nack

a=rtcp-fb:100 nack pli

a=rtcp-fb:100 goog-remb

a=rtcp-fb:100 transport-cc

a=rtpmap:101 VP9/90000

a=rtcp-fb:101 ccm fir

a=rtcp-fb:101 nack

a=rtcp-fb:101 nack pli

a=rtcp-fb:101 goog-remb

a=rtcp-fb:101 transport-cc

a=rtpmap:116 red/90000

a=rtpmap:117 ulpfec/90000

a=rtpmap:96 rtx/90000

a=fmtp:96 apt=100

a=rtpmap:97 rtx/90000

a=fmtp:97 apt=101

a=rtpmap:98 rtx/90000

a=fmtp:98 apt=116

a=3ge2ae:applied

a=setup:actpass

a=fingerprint:SHA-1 3D:95:53:11:ED:33:BE:0F:E8:69:42:0B:D2:DA:D3:53:A8:CD:7A:D0

a=candidate:1 1 UDP 2130706431 192.75.89.10 1486 typ host

a=candidate:1 2 UDP 2130706430 192.75.89.10 1487 typ host

a=rtcp:1487

a=ice-ufrag:Dp4L

a=ice-pwd:eaV8fsn7A3uhO4hpnRknOgXG

Chrome 50 will only accept the video part of the SDP, and reject the audio with port 0. I just wanted to know if that was normal behavior?

Thanks,

Paul

[Taylor Brandstetter]

Sounds like you're running into this bug: https://bugs.chromium.org/p/webrtc/issues/detail?id=5638

It will be fixed in Chrome 51. For now, you can just modify the SDP, replacing "SAVP" with "SAVPF".

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