webrtc H264视频通话前10秒有较多马赛克

编解码

#1

(1)codec选用H264,使用硬件编解码,接通后在摄像头移动
(2)前10秒左右马赛克严重
sdp如下:
m=video 11802 RTP/AVP 104

c=IN IP4 172.31.2.203

a=candidate:3166240470 1 udp 2122260223 172.31.2.203 11802 typ host generation 0 ufrag aPmU network-id 1

a=candidate:3166240470 2 udp 2122260222 172.31.2.203 11803 typ host generation 0 ufrag aPmU network-id 1

a=ice-ufrag:aPmU

a=ice-pwd:vIH2Ou+1yz4tGN5OGFuq8KVi

a=ice-options:renomination

a=rtpmap:104 H264/90000

a=rtcp-fb:104 ccm fir

a=rtcp-fb:104 nack

a=rtcp-fb:104 nack pli

a=rtcp-fb:104 goog-remb

a=rtcp-fb:104 transport-cc

a=fmtp:104 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f;x-google-max-bitrate=2048;x-google-start-bitrate=1024

a=ssrc-group:FID 3454179211 2116868507

a=ssrc:3454179211 cname:n1FA0hMQiDwZKvc3

a=ssrc:3454179211 msid:ARDAMS ARDAMSv0

a=ssrc:3454179211 mslabel:ARDAMS

a=ssrc:3454179211 label:ARDAMSv0

a=ssrc:2116868507 cname:n1FA0hMQiDwZKvc3

a=ssrc:2116868507 msid:ARDAMS ARDAMSv0

a=ssrc:2116868507 mslabel:ARDAMS

a=ssrc:2116868507 label:ARDAMSv0

a=sendrecv

是否有方法优化下减少自适应的时间?


#2

起始带宽1024kbps, 多大分辨率?


#3

1280*720p的