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Video Streaming API
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Request:
DESCRIBE rtsp://myserver/axis-media/media.amp
?videocodec=h264&resolution=640x480 RTSP/1.0
CSeq: 0
User-Agent: Axis AMC
Accept: application/sdp
Response:
RTSP/1.0 200 OK
CSeq: 0
Content-Type: application/sdp
Content-Base: rtsp://myserver/axis-media/media.amp/
Date: Wed, 16 Jul 2008 12:48:47 GMT
Content-Length: 847
v=0
o=- 1216212527554872 1216212527554872 IN IP4 myserver
s=Media Presentation
e=NONE
c=IN IP4 0.0.0.0
b=AS:50064
t=0 0
a=control:rtsp://myserver/axis-media/media.amp?videocodec=h264
&resolution=640x480
a=range:npt=0.000000-
m=video 0 RTP/AVP 96
b=AS:50000
a=framerate:30.0
a=transform:1,0,0;0,1,0;0,0,1
a=control:rtsp://myserver/axis-media/media.amp/trackID=1?videocodec=h264
&resolution=640x480
a=rtpmap:96 H264/90000
a=fmtp:96 packetization-mode=1; profile-level-id=420029;
sprop-parameter-sets=Z0IAKeKQFAe2AtwEBAaQeJEV,aM48gA==
m=audio 0 RTP/AVP 97
b=AS:64
a=control:rtsp://myserver/axis-media/media.amp/trackID=2
?videocodec=h264&resolution=640x480
a=rtpmap:97 mpeg4-generic/16000/1
a=fmtp:97 profile-level-id=15; mode=AAC-hbr;config=1408; SizeLength=13;
IndexLength=3;IndexDeltaLength=3; Profile=1; bitrate=64000;
3.2.4 SDP Media Attribute Transform
Depending on product model, the SDP le may contain a video media attribute transform. If the streamed video is rotated or
mirrored from the image source, this video media attribute shows how the video stream is orientated in relation to the original image
conguration. The orientation is described by a transformation matrix consisting of homogeneous coordinates for two-dimensional
operations (a 3x3 matrix).
Syntax:
a=transform:<MATRIX>
The matrix is formatted using commas to separate columns and semicolons to separate rows.
Example 2:
A video stream which is rotated 90 degrees is described by:
17