RTSP SDP IP地址XYZW [英] RTSP SDP IP ADDRESS XYZW
问题描述
问候：我正在学习如何使用RTSP流，并且在理解不同类型的SDP报告时遇到问题。 （SDP：会话描述协议）
通常情况下，我看到以下SDP消息正文：
v = 0
o = GoogleStreamer 1845654209 1772722960 IN IP4 74.125.214.212
s =视频
c = IN IP4 0.0.0.0
b = AS：80
t = 0 0
a =控制：*
a =范围：npt = 0-3013.250000
m = video 0 RTP / AVP 97
b = AS：56
a = rtpmap：97 MP4V-ES / 90000
a =控制：trackID = 2
a = cliprect：0,0,144,176
a = framesize：97 176-144
a = fmtp：97 profile-level-id = 8 ; config = 000001b008000001b58913000001000000012000c48d8800650584121463000001b2476f6f676c65
m = audio 0 RTP / AVP 96
b = AS：24
a = rtpmap：96 MP4A-LATM / 22050/1
a =控制：trackID = 3
a = fmtp：96 profile-level-id = 40; cpresent = 0; config = 400027103fc0
注意IP地址IP4 74.125.214.212，我理解为地址
但现在我看到以下内容：< br $> b $ b
v = 0
o = GoogleStreamer 1845654209 1772722960 IN IP4 xyzw
s =视频
c = IN IP4 0.0.0.0
b = AS：80
t = 0 0
a =控制：*
a =范围：npt = 0-3013.250000
m =视频0 RTP / AVP 97
b = AS：56
a = rtpmap：97 MP4V-ES / 90000
a =控制：trackID = 2
a = cliprect：0,0,144,176
a = framesize：97 176- 144
a = fmtp：97 profile-level-id = 8; config = 000001b008000001b58913000001000000012000c48d8800650584121463000001b2476f6f676c65
m = audio 0 RTP / AVP 96
b = AS： 24
a = rtpmap：96 MP4A-LATM / 22050/1
a =控制：trackID = 3
a = fmtp：96 profile-level- id = 40; cpresent = 0; config = 400027103fc0
在o = GoogleStreamer 1845654209 1772722960 IN IP4 xyzw
xyzw是什么意思，为什么代替IP地址？
Greetings : I'm learning "how to" with RTSP streaming and have a problem understanding a different type of SDP report. (SDP : Session Description Protocol)
Normally I see the following body of a SDP message:
v=0
o=GoogleStreamer 1845654209 1772722960 IN IP4 74.125.214.212
s=Video
c=IN IP4 0.0.0.0
b=AS:80
t=0 0
a=control:*
a=range:npt=0-3013.250000
m=video 0 RTP/AVP 97
b=AS:56
a=rtpmap:97 MP4V-ES/90000
a=control:trackID=2
a=cliprect:0,0,144,176
a=framesize:97 176-144
a=fmtp:97 profile-level-id=8;config=000001b008000001b58913000001000000012000c48d8800650584121463000001b2476f6f676c65
m=audio 0 RTP/AVP 96
b=AS:24
a=rtpmap:96 MP4A-LATM/22050/1
a=control:trackID=3
a=fmtp:96 profile-level-id=40;cpresent=0;config=400027103fc0
Notice the IP Address IP4 74.125.214.212 and I understand this as the address
But now I see the following:
v=0
o=GoogleStreamer 1845654209 1772722960 IN IP4 x.y.z.w
s=Video
c=IN IP4 0.0.0.0
b=AS:80
t=0 0
a=control:*
a=range:npt=0-3013.250000
m=video 0 RTP/AVP 97
b=AS:56
a=rtpmap:97 MP4V-ES/90000
a=control:trackID=2
a=cliprect:0,0,144,176
a=framesize:97 176-144
a=fmtp:97 profile-level-id=8;config=000001b008000001b58913000001000000012000c48d8800650584121463000001b2476f6f676c65
m=audio 0 RTP/AVP 96
b=AS:24
a=rtpmap:96 MP4A-LATM/22050/1
a=control:trackID=3
a=fmtp:96 profile-level-id=40;cpresent=0;config=400027103fc0
In the o=GoogleStreamer 1845654209 1772722960 IN IP4 x.y.z.w
What does the x.y.z.w mean and why is it in place of the IP Address ?
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