联通IPTV rtsp 回退 无法播放 #369
Description
联通IPTV rtsp 回退 无法播放，以下是握手过程
DESCRIBE rtsp://10.254.220.79:1554/iptv/import/Tvod/iptv/001/001/ch14041015570107698054.rsc/27589_Multi.sdp?lvst=3&nodeid=node19052321502444&TSTVTimeLife=7200&userid=000375655340000001&userip=10.151.62.132&time=20260228085404.040+00&life=86400000&transferproviderid=001&ctype=01&sid=768195440&domain=0&phycid=ch14041015570107698054&playtype=0&ifpricereqsnd=1&boid=001&authid=0&mediaid=ch14041015570107698054&urtm=0&agnt=MTMjMAuyDoQC44NU0LjIAuyDoQ&sadr=MTAujIyMjUTAujIyujI0LjIyMC43OQ&cryptmode=0502&crypt=9E59891C0D56286B5166CDA09BC39A2E RTSP/1.0
Accept: application/sdp
CSeq: 0
Timeshift: 0
User-Agent:CTC RTSP 1.0 ZTE Ltd RTSP Client V2.0 guid-10.151.74.198/B597D635-399B-1580-38ED-8745B81B3812
x-zmssFecCDN: yes
x-NAT:10.151.62.132:20573
x-zmssRtxSdp: yes
x-Index:
RTSP/1.0 200 OK
Server: ZMSS_ChinaTelcom2.2
CSeq: 0
Cache-Control: no-cache
Content-length: 510
Date: Sat, 28 Feb 2026 08:54:04 GMT
Expires: Sat, 28 Feb 2026 08:54:04 GMT
Content-Type: application/sdp
Content-Base: rtsp://10.254.220.79:1554/iptv/import/Tvod/iptv/001/001/ch14041015570107698054.rsc/27589_Multi.sdp/
v=0
o=- 296874273 1 IN IP4 10.254.220.78
s=Camera_A
c=IN IP4 225.1.2.47/16
b=AS:8524
t=0 0
a=recvonly
a=x-zmssvbr:0
a=x-ZMSSTimeShiftLift:7200
a=x-ZMSSCCBitrate:8393
a=x-ZMSSShmFile:ch14041015570107698054_001
a=x-ZMSSProcessMode:2
a=range:clock=20260228T065404.06Z-20260228T085404.06Z
a=x-ZMSSCCStartTime:20241206T013835
m=video 10276 RTP/AVPF 33 97
a=rtpmap:33 MP2T/90000
a=control:trackID=2
a=3GPP-Adaptation-Support:2
a=rtcp-fb:33 nack
a=rtpmap:97 rtx/90000
a=fmtp:97 apt=33;rtx-time=1
SETUP rtsp://10.254.220.79:1554/iptv/import/Tvod/iptv/001/001/ch14041015570107698054.rsc/27589_Multi.sdp/trackID=2 RTSP/1.0
CSeq: 1
3GPP-Adaptation: url=rtsp://10.254.220.79:1554/iptv/import/Tvod/iptv/001/001/ch14041015570107698054.rsc/27589_Multi.sdp/trackID=2;size=22400000;target-time=8200
Transport: MP2T/RTP/UDP;unicast;destination=10.151.74.198;client_port=8360-8361,MP2T/RTP/TCP;unicast;destination=10.151.74.198;interleaved=0-1,MP2T/UDP;unicast;destination=10.151.74.198;client_port=8360-8361,MP2T/TCP;unicast;destination=10.151.74.198;interleaved=0-1
User-Agent:CTC RTSP 1.0 ZTE Ltd RTSP Client V2.0 guid-10.151.74.198/B597D635-399B-1580-38ED-8745B81B3812
x-NAT:10.151.74.198:8360
RTSP/1.0 200 OK
Server: ZMSS_ChinaTelcom2.2
CSeq: 1
Session: 4577473749516272865
Date: Sat, 28 Feb 2026 08:54:04 GMT
Expires: Sat, 28 Feb 2026 08:54:04 GMT
Transport: MP2T/TCP;unicast;destination=10.151.74.198;interleaved=0-1
3GPP-Adaptation: url=rtsp://10.254.220.79:1554/iptv/import/Tvod/iptv/001/001/ch14041015570107698054.rsc/27589_Multi.sdp/trackID=2;size=22400000;target-time=8200
PLAY rtsp://10.254.220.79:1554/iptv/import/Tvod/iptv/001/001/ch14041015570107698054.rsc/27589_Multi.sdp?lvst=3&nodeid=node19052321502444&TSTVTimeLife=7200&userid=000375655340000001&userip=10.151.62.132&time=20260228085404.040+00&life=86400000&transferproviderid=001&ctype=01&sid=768195440&domain=0&phycid=ch14041015570107698054&playtype=0&ifpricereqsnd=1&boid=001&authid=0&mediaid=ch14041015570107698054&urtm=0&agnt=MTMjMAuyDoQC44NU0LjIAuyDoQ&sadr=MTAujIyMjUTAujIyujI0LjIyMC43OQ&cryptmode=0502&crypt=9E59891C0D56286B5166CDA09BC39A2E RTSP/1.0 RTSP/1.0
CSeq: 2
Session: 4577473749516272865
User-Agent:CTC RTSP 1.0 ZTE Ltd RTSP Client V2.0 guid-10.151.74.198/B597D635-399B-1580-38ED-8745B81B3812
Scale: -2.0
Range: npt=now-
RTSP/1.0 200 OK
Server: ZMSS_ChinaTelcom2.2
CSeq: 2
Session: 4577473749516272865
Scale: -2.0
Range: clock=20260228T085402.04Z-20260228T065404.10Z
RTP-Info: url=rtsp://10.254.220.79:1554/iptv/import/Tvod/iptv/001/001/ch14041015570107698054.rsc/27589_Multi.sdp/trackID=2;seq=0;rtptime=0
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