Problems with SDP file

Wowza Streaming Engine
1

Hello

We are using Harmonic Prostream 4000 Transcoder to generate our video formats. I set up the Wowza server for publishing this streams. With RTMP I have no problems to access the live streams, but if I try to watch the live streams with the VLC Player over RTP/RTSP I always get the following error:

live555 error: Nothing to play for rtsp://192.168.1.10:1935/web/SFInfo.sdp

main error: open of `rtsp://192.168.1.10:1935/web/SFInfo.sdp’ failed: (null)

live555 error: Could not create the RTSP Session: Invalid SDP line: AgNSFIR0Z6FHVmMWQshjokrMRkECSoxBUWUUIHDxISDUNg4HDwI0DNEf9NNGOSUxjkMcphgmIiYg

jECBIlDBAyNEhgJDBoTBMGIZB4EAiBMgWuQCgL/lwFKCgoL4AAADAAgAAAMBlYEAAW40AAIlT//+

BQ==,aO68sA==

a=cliprect:0,0,360,640

a=framesize:97 640-360

a=control:trackID=2

live555 error: Nothing to play for rtsp://192.168.1.10:1935/web/SFInfo.sdp

main error: open of `rtsp://192.168.1.10:1935/web/SFInfo.sdp’ failed: (null)

It seems there is a problem with the SDP file. But the one I copied in the content folder comming from the encoder seems to be fine. On the server I have no errors and with RTMP it is working.

The original SDP file looks like this:

v=0

o=user1265039459 1265039459 1265039459 IN IP4 10.63.31.81

s=SFInfo

c=IN IP4 239.3.1.49/10

b=RR:0

t=0 0

a=control:*

a=range:npt=now-

m=video 51140 RTP/AVP 96

a=rtpmap:96 H264/90000

a=fmtp:96 profile-level-id=64002a; sprop-parameter-sets=Z2QAKq2UKRhCjBESGAgEQIEChEBSFAiEAKAP4PgEgBhAwAcIG5QWrNwUBgMgSIECEBn+BEBACEChAgNSFIR0Z6FHVmMWQshjokrMRkECSoxBUWUUIHDxISDUNg4HDwI0DNEf9NNGOSUxjkMcphgmIiYgjECBIlDBAyNEhgJDBoTBMGIZB4EAiBMgWuQCgL/lwFKCgoL4AAADAAgAAAMBlYEAAW40AAIlT//+BQ==,aO68sA==; packetization-mode=1

a=control:trackID=1

b=RR:0

b=RS:1024

b=AS:1555

b=TIAS:1500000

a=maxprate:170

m=audio 51142 RTP/AVP 97

a=rtpmap:97 mpeg4-generic/44100/2

a=fmtp:97 streamtype=5; profile-level-id=15; mode=AAC-hbr; config=1210; sizeLength=13; indexLength=3; indexDeltaLength=3; constantDuration=1024; object=2

a=control:trackID=2

a=lang:eng

b=RR:0

b=RS:1024

b=AS:79

b=TIAS:64000

a=maxprate:44

Does anyone else made similar expiriences? At the moment I’m using Wowza version 2.0.0.11.

On the same server I tried with an other transcoder and RTP/RTSP streaming was no problem.

2

Where are the live555 errors being generated? In VLC? Connecting to Wowza?

Is the Wowza address “192.168.1.10”?

What is the Wowza RTMP url and stream name that works? Does this work using the Wowza example players:

Server: rtmp://192.168.1.10:1935/web

Stream: SFInfo.sdp

If the above works, and the /conf/web/Application.xml /RTP /Authentication /PlayMethod is “none”, then this should work in VLC:

rtsp://192.168.1.10:1935/web/SFInfo.sdp

But you wouldn’t see errors related to Live55. So make sure you are doing this in VLC

rtsp://[wowza-address]:1935/web/SFInfo.sdp

Richard

3

Upgrade to 2.1.2. It fixes a problem with SDP generation. The sprops data is being improperly wrapped in 2.1.1. This has been fixed in 2.1.2.

Charlie

4

Please send that URL to support@wowza.com.

And zip up and send the conf and logs folders, and screen shots of all the encoder settings.

Include a link back to this thread.

Richard

5

Hello Richard

Yes, the error messages are generated in the VLC.

With the Wowza example player I have no problems to see the RTMP stream. The for RTP in the Application.xml is set to none.

In fact the 192.168.1.10 is not the real IP address of the server, he has an public IP.

Thanks for your help,

Sascha

6

Hello guys

Thanks for your help, the update to version 2.1.2 solved the problem! I’m now able to see my streams with RTSP.

Sascha