[streaming] Re: problem with SAP

Thu Dec 1 14:38:16 CET 2005

The SDP file is in that message - from

o=- 1498722985 3543377510 IN IP4 130.230.50.198
to
a=x-envivio-verid:00022159

You should be able to turn this into a "vi" text file and put it  
directly into VLC as a test.

Here is one I know works :

v=0
o=QTSS_Play_List 1399228538 441870041 IN IP4 63.105.122.28
s=H264test
c=IN IP4 233.64.133.180
b=AS:411
t=0 0
a=x-broadcastcontrol:RTSP
a=maxprate:53.000000
a=isma-compliance:2,2.0,2
m=video 8082 RTP/AVP 96
b=AS:343
b=TIAS:331
a=maxprate:53
a=rtpmap:96 H264/90000
a=control:trackID=1
a=cliprect:0,0,480,640
a=framesize:96 640-480
a=fmtp:96 packetization-mode=1;profile-level-id=4D401E;sprop- 
parameter-sets=J01AHqkYFAe2ANQYBBjegbAUF73wEA==,KM4JyA==
a=mpeg4-esid:201
m=audio 8080 RTP/AVP 97
b=AS:78
b=TIAS:69
a=maxprate:43
a=rtpmap:97 mpeg4-generic/44100/2
a=control:trackID=2
a=fmtp:97 profile-level-id=15;mode=AAC- 
hbr;sizelength=13;indexlength=3;indexdeltalength=3;config=1210
a=mpeg4-esid:101

Note that you are getting complaints about c= and m= fields, and you  
don't have the initial v= field.

Your c= field is the multicast address, and seems odd :

239.252.80.1/10

Is the actual MC address 239.252.80.1 ? Why is there a /10 there ?  
You might try dropping  the /10
and correcting the MC address.

Your m fields (port and RTP number for audio and video seem OK, but  
you should check the port assignments.

Regards
Marshall

On Dec 1, 2005, at 8:25 AM, hornsby wrote:

> Hi,
> Yes this is a multicast h.264 stream. I receive the SDP  
> announcement without
> problem, but when I ask to play it, doesn't work.
> I can't receive global multicast unfortunately.
> How can I actually get the SDP file ??
>
> the VLC log is :
> ##############################################
> main warning: no access2 module matching "sdp" could be loaded
> main error: no suitable access module for `sdp://v=0
> o=- 1498722985 3543377510 IN IP4 130.230.50.198
> s=4Caster-7850
> c=IN IP4 239.252.80.1/10
> b=RR:0
> t=0 0
> a=mpeg4-iod:"data:application/mpeg4-iod;base64,AoIzAE///w/+/ 
> wOBPgABQKBkYXRhOmFwcGxpY2F0aW9uL21wZWc0LW9kLWF1O2Jhc2U2NCxBVnNCS2dVZkF 
> 5WUF5U0FBWlFRTklSRUJKUUFBQkpQQUFBU1R3QVlRQUVRQUFWK1FBQUZma0NBQUFBQUFBd 
> 0V0QXA4REtRQmxBQVFOUUJVQUJnQUFBVitRQUFGZmtBWVFBRVFBQUx1QUFBRmZrQ0FBQUF 
> BQUEwTURaVzVuBA0BBQAAyAAAAAAAAAAABgkBAAAAAAAAAAADaQACQEZkYXRhOmFwcGxpY 
> 2F0aW9uL21wZWc0LWJpZnMtYXU7YmFzZTY0LHdCQVNnVEFxQlcwbUVFSDhBQUFCL0FBQUJ 
> FS0NLQ240BBICDQAAIAAAAAAAAAAABQMAAGAGCQEAAAAAAAAAAA=="
> m=video 9760 RTP/AVP 96
> b=AS:299
> a=rtpmap:96 H264/90000
> a=fmtp:96 profile-level-id=42E00D;
> sprop-parameter-sets=Z0LgDZWgUGfn/ 
> 8AAQABEAAAPoAABhqGDAASTwBJWrgAC,aM44gA==;
> parameter-sets=Z0LgDZWgUGfn/8AAQABEAAAPoAABhqGDAASTwBJWrgAC,aM44gA==;
> packetization-mode=1
> a=cliprect:0,0,180,320
> a=mpeg4-esid:201
> a=x-envivio-verid:00022159
> m=audio 9762 RTP/AVP 97
> b=AS:90
> a=rtpmap:97 mpeg4-generic/48000/2
> a=fmtp:97 profile-level-id=15; config=1190; streamtype=5; mode=AAC- 
> hbr;
> SizeLength=13; IndexLength=3; IndexDeltaLength=3
> a=mpeg4-esid:101
> a=lang:eng
> a=x-envivio-verid:00022159
> '
> main debug: thread 3015703472 joined (src/input/input.c:386)
> main debug: no-skip mode, stopping
> sap debug: incorrect c field, IN
> sap debug: incorrect m field, video
> sap debug: incorrect c field, IN
> sap debug: incorrect m field, video
> sap debug: incorrect c field, IN
> sap debug: incorrect m field, video
> sap debug: incorrect c field, IN
> sap debug: incorrect m field, video
> sap debug: incorrect c field, IN
> sap debug: incorrect m field, video
> sap debug: session deletion packet
> ##############################################
>
>
>
> On Thursday 01 December 2005 14:29, Marshall Eubanks wrote:
>> Can you send the SDP file you receive ?
>>
>> Also, is this for multicast ? If you can receive global multicasts
>> you can also test this with  the AmericaFree TV H264test channel.
>> There are SAPs sent for this.
>>
>> Regards
>> Marshall
>>
>> As usual, you might want  to run tcpdump on  the  receiving machine
>> to see
>> if the packets are actually arriving.
>>
>> On Nov 30, 2005, at 7:56 AM, hornsby wrote:
>>> On Wednesday 30 November 2005 14:53, you wrote:
>>>> Le Mercredi 30 Novembre 2005 13:06, hornsby a écrit :
>>>>> I have trouble getting a h.264 stream to display on my machine
>>>>> from the SAP annoucement.
>>>>>  Everything works fine on Windows machine, so it is weird. And as
>>>>> I'm
>>>>> not a windows fan at all, I want to get it work on Linux :)
>>>>
>>>> Is it that you don't receive the announcement or that you fail to
>>>> view
>>>> the stream when selecting it in the playlist ?
>>>
>>> I do receive the annoucement but then it fails to open the stream.
>>>
>>> thanks for helping
>>>
>>>
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