rtsp stream capturing

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野的像风 2020-12-24 03:39

I\'m looking for some universal way to dump rtsp stream. I want to figure out, that some rtsp stream is working well and server is sending some watchable video.

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北海茫月 (楼主)

2020-12-24 03:54

Dump stream(s) from any Youtube Video to local device using OPENRTSP

As an example, i will use the rtsp feed available for any youtube video.

Steps:

Use Oauth 2.0 playground to interact directly with youtube api -gets the feeds
Get the ID of Youtube video, using it in the gdata feed request (v=cpST8yz4w1w)
Parse the output for the rtsp url you want - format 1 is low bandwidth , format 6= HIGH
CLI - use openrtsp to request
download(s) openrtsp outputs separate file for each track
ofile1="video-H263-2000-1"
ofile2="audio-AMR-2"

Details on the manual process for dumping the stream:

Oauth 2 playground is good tool https://code.google.com/oauthplayground/

Choose "Youtube" from bottom of list , click "Authorize" button
Click on "Allow Access"
Click "Exchange Authorization code for tokens"
You will get text box for "Request URI"
Request the following:

https://gdata.youtube.com/feeds/api/videos/cpST8yz4w1w?fields=media%3Agroup%2Fmedia%3Acontent%5B%40yt%3Aformat%3D%221%22%5D&v=2&alt=json

plaintext fields spec=media:group/media:content[@yt:format="1"]

The response is json stream. Copy that from the oauth form and paste it to : http://json.parser.online.fr/ and you will have something like:

"entry":{
"xmlns":"http://www.w3.org/2005/Atom",
"xmlns$media":"http://search.yahoo.com/mrss/",
"xmlns$yt":"http://gdata.youtube.com/schemas/2007",
"media$group":{
"media$content":[
{
"url":"rtsp://v8.cache8.c.youtube.com/CiILENy73wIaGQlcw_gs85OUchMYDSANFEgGUgZ2aWRlb3MM/0/0/0/video.3gp",
"type":"video/3gpp",
"medium":"video",
"expression":"full",
"duration":64,
"yt$format":1
}
]

Take the RTSP url attribute from that and call openrtsp to do the file dump. You will have to WAIT because openrtsp will stream the media ( not download ). If you ask for a dump of a 10 minute .mp4, you will have to wait 10 minutes.

NOTE: The SDP behind the rtsp URI maintains separate sources for each track. So, along with the dump, you get separate files for each track in the original media file.

$ ./openRTSP rtsp://v8.cache8.c.youtube.com/CiILENy73wIaGQlcw_gs85OUchMYDSANFEgGUgZ2aWRlb3MM/0/0/0/video.3gp

Dumpfile, Outputs will be:

Created output file: "video-H263-2000-1"
Created output file: "audio-AMR-2"

Stdout details includes full protocol of RTSP session :

$ ./openRTSP rtsp://v8.cache8.c.youtube.com/CiILENy73wIaGQlcw_gs85OUchMYDSANFEgGUgZ2aWRlb3MM/0/0/0/video.3gp
Opening connection to 74.125.213.247, port 554...
...remote connection opened
Sending request: OPTIONS rtsp://v8.cache8.c.youtube.com/CiILENy73wIaGQlcw_gs85OUchMYDSANFEgGUgZ2aWRlb3MM/0/0/0/video.3gp RTSP/1.0
CSeq: 2
User-Agent: ./openRTSP (LIVE555 Streaming Media v2011.07.08)


Received 140 new bytes of response data.
Received a complete OPTIONS response:
RTSP/1.0 200 OK
Public: DESCRIBE, GET_PARAMETER, OPTIONS, PAUSE, PLAY, SETUP, SET_PARAMETER, TEARDOWN
CSeq: 2
Server: Google RTSP 1.0


Sending request: DESCRIBE rtsp://v8.cache8.c.youtube.com/CiILENy73wIaGQlcw_gs85OUchMYDSANFEgGUgZ2aWRlb3MM/0/0/0/video.3gp RTSP/1.0
CSeq: 3
User-Agent: ./openRTSP (LIVE555 Streaming Media v2011.07.08)
Accept: application/sdp


Received 776 new bytes of response data.
Received a complete DESCRIBE response:
RTSP/1.0 200 OK
Content-Type: application/sdp
Cache-Control: must-revalidate
Date: Fri, 30 Mar 2012 15:27:43 GMT
Expires: Fri, 30 Mar 2012 15:27:43 GMT
Last-Modified: Fri, 30 Mar 2012 15:27:43 GMT
Content-Base: rtsp://v8.cache8.c.youtube.com/CiILENy73wIaGQlcw_gs85OUchMYDSANFEgGUgZ2aWRlb3MM/0/0/0/video.3gp/
CSeq: 3
Server: Google RTSP 1.0
Content-Length: 404

v=0
o=GoogleStreamer 943086435 202448811 IN IP4 74.125.213.247
s=Video
c=IN IP4 0.0.0.0
b=AS:51
t=0 0
a=control:*
a=range:npt=0-63.800000
m=video 0 RTP/AVP 98
b=AS:39
a=rtpmap:98 H263-2000/90000
a=control:trackID=0
a=cliprect:0,0,144,176
a=framesize:98 176-144
a=fmtp:98 profile=0;level=10
m=audio 0 RTP/AVP 99
b=AS:12
a=rtpmap:99 AMR/8000/1
a=control:trackID=1
a=fmtp:99 octet-align

Opened URL "rtsp://v8.cache8.c.youtube.com/CiILENy73wIaGQlcw_gs85OUchMYDSANFEgGUgZ2aWRlb3MM/0/0/0/video.3gp", returning a SDP description:
v=0
o=GoogleStreamer 943086435 202448811 IN IP4 74.125.213.247
s=Video
c=IN IP4 0.0.0.0
b=AS:51
t=0 0
a=control:*
a=range:npt=0-63.800000
m=video 0 RTP/AVP 98
b=AS:39
a=rtpmap:98 H263-2000/90000
a=control:trackID=0
a=cliprect:0,0,144,176
a=framesize:98 176-144
a=fmtp:98 profile=0;level=10
m=audio 0 RTP/AVP 99
b=AS:12
a=rtpmap:99 AMR/8000/1
a=control:trackID=1
a=fmtp:99 octet-align

Created receiver for "video/H263-2000" subsession (client ports 52320-52321)
Created receiver for "audio/AMR" subsession (client ports 52322-52323)
Sending request: SETUP rtsp://v8.cache8.c.youtube.com/CiILENy73wIaGQlcw_gs85OUchMYDSANFEgGUgZ2aWRlb3MM/0/0/0/video.3gp/trackID=0 RTSP/1.0
CSeq: 4
User-Agent: ./openRTSP (LIVE555 Streaming Media v2011.07.08)
Transport: RTP/AVP;unicast;client_port=52320-52321


Received 360 new bytes of response data.
Received a complete SETUP response:
RTSP/1.0 200 OK
Session: 4d04d0e9;timeout=90
Transport: RTP/AVP;unicast;mode=play;client_port=52320-52321;server_port=10580-10581;source=74.125.213.247;ssrc=7B551CAA
Cache-Control: must-revalidate
Date: Fri, 30 Mar 2012 15:27:43 GMT
Expires: Fri, 30 Mar 2012 15:27:43 GMT
Last-Modified: Fri, 30 Mar 2012 15:27:43 GMT
CSeq: 4
Server: Google RTSP 1.0


setup response srvAddr port rtpchnl   74.125.213.247 10580 255
Setup "video/H263-2000" subsession (client ports 52320-52321)
Sending request: SETUP rtsp://v8.cache8.c.youtube.com/CiILENy73wIaGQlcw_gs85OUchMYDSANFEgGUgZ2aWRlb3MM/0/0/0/video.3gp/trackID=1 RTSP/1.0
CSeq: 5
User-Agent: ./openRTSP (LIVE555 Streaming Media v2011.07.08)
Transport: RTP/AVP;unicast;client_port=52322-52323
Session: 4d04d0e9


Received 360 new bytes of response data.
Received a complete SETUP response:
RTSP/1.0 200 OK
Session: 4d04d0e9;timeout=90
Transport: RTP/AVP;unicast;mode=play;client_port=52322-52323;server_port=10580-10581;source=74.125.213.247;ssrc=10CD5DCE
Cache-Control: must-revalidate
Date: Fri, 30 Mar 2012 15:27:43 GMT
Expires: Fri, 30 Mar 2012 15:27:43 GMT
Last-Modified: Fri, 30 Mar 2012 15:27:43 GMT
CSeq: 5
Server: Google RTSP 1.0


setup response srvAddr port rtpchnl   74.125.213.247 10580 255
Setup "audio/AMR" subsession (client ports 52322-52323)
Created output file: "video-H263-2000-1"
Created output file: "audio-AMR-2"
Sending request: PLAY rtsp://v8.cache8.c.youtube.com/CiILENy73wIaGQlcw_gs85OUchMYDSANFEgGUgZ2aWRlb3MM/0/0/0/video.3gp/ RTSP/1.0
CSeq: 6
User-Agent: ./openRTSP (LIVE555 Streaming Media v2011.07.08)
Session: 4d04d0e9
Range: npt=0.000-63.800


Received 394 new bytes of response data.
Received a complete PLAY response:
RTSP/1.0 200 OK
Session: 4d04d0e9;timeout=90
Range: npt=0.000-63.800
RTP-Info: url=rtsp://v8.cache8.c.youtube.com/CiILENy73wIaGQlcw_gs85OUchMYDSANFEgGUgZ2aWRlb3MM/0/0/0/video.3gp/trackID=0;seq=48690;rtptime=668323490,url=rtsp://v
8.cache8.c.youtube.com/CiILENy73wIaGQlcw_gs85OUchMYDSANFEgGUgZ2aWRlb3MM/0/0/0/video.3gp/trackID=1;seq=61565;rtptime=99689199
CSeq: 6
Server: Google RTSP 1.0


Started playing session
Receiving streamed data (for up to 68.800000 seconds)...
Sending request: TEARDOWN rtsp://v8.cache8.c.youtube.com/CiILENy73wIaGQlcw_gs85OUchMYDSANFEgGUgZ2aWRlb3MM/0/0/0/video.3gp/ RTSP/1.0
CSeq: 7
User-Agent: ./openRTSP (LIVE555 Streaming Media v2011.07.08)
Session: 4d04d0e9


Received 72 new bytes of response data.
Received a complete TEARDOWN response:
RTSP/1.0 200 OK
CSeq: 7
Session: 4d04d0e9
Server: Google RTSP 1.0

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