UserAgent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.110 Safari/537.36

Steps to reproduce the problem:
1. Send a SDP offer to the chrome, content like this:
s=ba2768de-abd7-3e24-825c-b7583a91a461
e=unknown@invalid.net
c=IN IP4 135.60.86.242
t=0 0
a=msid-semantic: WMS ba2768de-abd7-3e24-825c-b7583a91a461
m=audio 6220 UDP/TLS/RTP/SAVPF 96 0 13 101
c=IN IP4 135.60.86.242
a=ice-ufrag:qMXTjCV/
a=ice-pwd:o3PBVAC28HZ3feTBAGielgFj
a=candidate:32 1 udp 2130706431 135.60.86.242 6220 typ host
a=end-of-candidates
a=fingerprint:sha-256 3D:68:8C:E1:33:14:59:14:5E:CA:D3:AE:7A:3B:CE:7A:35:F1:AD:8D:07:03:64:F1:A5:AD:FB:97:5D:BC:79:51
a=setup:actpass
a=rtpmap:96 opus/48000/2
a=fmtp:96 maxplaybackrate=16000; sprop-maxcapturerate=16000; maxaveragebitrate=20000; stereo=0; useinbandfec=0; usedtx=0; cbr=0; sprop-stereo=0
a=rtpmap:0 PCMU/8000
a=rtpmap:13 CN/8000
a=rtpmap:101 telephone-event/8000
a=maxptime:20
a=ptime:20
a=minptime:20
a=rtcp-mux
a=ssrc:1601188190 cname:4dbfd71e-9092-11e6-bb4c-9c8e992c5cb0
a=ssrc:1601188190 msid:ba2768de-abd7-3e24-825c-b7583a91a461 audio-0
a=sendrecv
m=video 6222 UDP/TLS/RTP/SAVPF 97
c=IN IP4 135.60.86.242
b=AS:1280
a=ice-ufrag:qMXTjCV/
a=ice-pwd:o3PBVAC28HZ3feTBAGielgFj
a=candidate:32 1 udp 2130706431 135.60.86.242 6222 typ host
a=end-of-candidates
a=fingerprint:sha-256 3D:68:8C:E1:33:14:59:14:5E:CA:D3:AE:7A:3B:CE:7A:35:F1:AD:8D:07:03:64:F1:A5:AD:FB:97:5D:BC:79:51
a=setup:actpass
a=content:default,1,100,1
a=rtpmap:97 H264/90000
a=fmtp:97 profile-level-id=42e01f;in-band-parameter-sets=1;max-rcmd-nalu-size=1292
a=rtcp-fb:97 nack pli
a=rtcp-fb:97 ccm fir
a=rtcp-fb:97 ccm tmmbr
a=rtcp-mux
a=recvonly

2. Chrome answers like this:
v=0
o=- 4915911165941465533 2 IN IP4 127.0.0.1
s=-
t=0 0
a=msid-semantic: WMS QYZ8KpylrX8h5Ns6FO5LSaCaUtzHpvW6wuZb
m=audio 59867 UDP/TLS/RTP/SAVPF 96 0 13 101
c=IN IP4 192.168.0.3
a=rtcp:9 IN IP4 0.0.0.0
a=candidate:3793934955 1 udp 2122262783 2600:8800:1700:4380:ed5a:11e0:f106:4b12 59865 typ host generation 0 network-id 4
a=candidate:2224440194 1 udp 2122197247 2600:8800:1700:4380:e5ba:d6f6:23ad:3651 59866 typ host generation 0 network-id 3
a=candidate:3802297132 1 udp 2122129151 192.168.0.3 59867 typ host generation 0 network-id 2
a=candidate:2418917555 1 udp 2122063615 135.105.97.8 59868 typ host generation 0 network-id 1
a=candidate:2896242331 1 tcp 1518283007 2600:8800:1700:4380:ed5a:11e0:f106:4b12 9 typ host tcptype active generation 0 network-id 4
a=candidate:3390422898 1 tcp 1518217471 2600:8800:1700:4380:e5ba:d6f6:23ad:3651 9 typ host tcptype active generation 0 network-id 3
a=candidate:2887880668 1 tcp 1518149375 192.168.0.3 9 typ host tcptype active generation 0 network-id 2
a=candidate:3735960643 1 tcp 1518083839 135.105.97.8 9 typ host tcptype active generation 0 network-id 1
a=ice-ufrag:zPD9
a=ice-pwd:vmK1hcvm/j1t+YRyO7vgJTKn
a=fingerprint:sha-256 A5:64:2E:83:0B:BB:64:8F:2D:15:02:F0:55:D0:07:49:15:F5:67:4F:A7:22:6A:C1:C7:C2:B5:D5:4A:CB:81:51
a=setup:active
a=mid:audio
a=sendrecv
a=rtcp-mux
a=rtpmap:96 opus/48000/2
a=fmtp:96 minptime=10;useinbandfec=1
a=rtpmap:0 PCMU/8000
a=rtpmap:13 CN/8000
a=rtpmap:101 telephone-event/8000
a=ssrc:3407184116 cname:ldnMNc6zgrY3zGI8
a=ssrc:3407184116 msid:QYZ8KpylrX8h5Ns6FO5LSaCaUtzHpvW6wuZb 601aa6c5-e0e5-47c1-91d3-c3d7eae1ca95
a=ssrc:3407184116 mslabel:QYZ8KpylrX8h5Ns6FO5LSaCaUtzHpvW6wuZb
a=ssrc:3407184116 label:601aa6c5-e0e5-47c1-91d3-c3d7eae1ca95
m=video 59871 UDP/TLS/RTP/SAVPF 97
c=IN IP4 192.168.0.3
a=rtcp:9 IN IP4 0.0.0.0
a=candidate:3793934955 1 udp 2122262783 2600:8800:1700:4380:ed5a:11e0:f106:4b12 59869 typ host generation 0 network-id 4
a=candidate:2224440194 1 udp 2122197247 2600:8800:1700:4380:e5ba:d6f6:23ad:3651 59870 typ host generation 0 network-id 3
a=candidate:3802297132 1 udp 2122129151 192.168.0.3 59871 typ host generation 0 network-id 2
a=candidate:2418917555 1 udp 2122063615 135.105.97.8 59872 typ host generation 0 network-id 1
a=candidate:2896242331 1 tcp 1518283007 2600:8800:1700:4380:ed5a:11e0:f106:4b12 9 typ host tcptype active generation 0 network-id 4
a=candidate:3390422898 1 tcp 1518217471 2600:8800:1700:4380:e5ba:d6f6:23ad:3651 9 typ host tcptype active generation 0 network-id 3
a=candidate:2887880668 1 tcp 1518149375 192.168.0.3 9 typ host tcptype active generation 0 network-id 2
a=candidate:3735960643 1 tcp 1518083839 135.105.97.8 9 typ host tcptype active generation 0 network-id 1
a=ice-ufrag:oHRV
a=ice-pwd:1vkJdTAWHsIcqli4QHpdaavz
a=fingerprint:sha-256 A5:64:2E:83:0B:BB:64:8F:2D:15:02:F0:55:D0:07:49:15:F5:67:4F:A7:22:6A:C1:C7:C2:B5:D5:4A:CB:81:51
a=setup:active
a=mid:video
a=sendonly
a=rtcp-mux
a=rtpmap:97 H264/90000
a=rtcp-fb:97 ccm fir
a=rtcp-fb:97 nack pli
a=fmtp:97 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f
a=ssrc:2600202029 cname:ldnMNc6zgrY3zGI8
a=ssrc:2600202029 msid:QYZ8KpylrX8h5Ns6FO5LSaCaUtzHpvW6wuZb 647f61aa-dcbe-4245-ab86-4a1f150e4558
a=ssrc:2600202029 mslabel:QYZ8KpylrX8h5Ns6FO5LSaCaUtzHpvW6wuZb
a=ssrc:2600202029 label:647f61aa-dcbe-4245-ab86-4a1f150e4558

3. Check in chrome://webrtc-internal and see if chrome sends very low bitrate video

What is the expected behavior?
Chrome should send out video with good quality@1Mbps.

What went wrong?
1. When is offered with packetization-mode 0, chrome should response with packetization-mode 0 instead of 1 according to RFC6184.

2. With Chrome Ver 57.0.2987.110 on Windows 7 with OpenH264 1.6 sends out very low bitrate (<50Kbps) blocky bad video when packetization-mode is 0 in SDP offer, please see screen shoots of send chart, BWE chart and chrome debug log in attached chrome_ver57_win7.zip.

The same sdp to Chrome Version 56.0.2924.87 on Windows 7 or Chrome version 57.0.2987.110 on Windows 10 work fine, related charts and logs can be found in attached attached chrome_ver56_win7.zip and attached chrome_ver57_win10.zip respectively.

Did this work before? Yes 56.0.2924.87

Chrome version: 57.0.2987.110  Channel: stable
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: 

This issue may be related to  Issue 600254 . I tested the same with Chrome Canary ver 59, the problem still exists in the Chrome Canary ver 59.
 

Deleted: chrome_ver57_win7.zip 465 KB

chrome_ver57_win7.zip 465 KB Download

Deleted: chrome_ver56_win7.zip 525 KB

chrome_ver56_win7.zip 525 KB Download

Deleted: Chrome_ver57_win10.zip 543 KB

Chrome_ver57_win10.zip 543 KB Download