[streaming] Re: problem with SAP

Thu Dec 1 17:38:43 CET 2005

Don't know, but sometimes there are problems that
one system will accept and the other will choke on.

Marshall

On Dec 1, 2005, at 10:49 AM, hornsby wrote:

> Thanks for the suggestion, I'll try tomorrow.
> But why VLC on windows, with the exact same SDP announcement plays  
> just
> fine ??
> That is my biggest concern as I don't want to have to start windows ..
> adrian
>
> On Thursday 01 December 2005 15:38, Marshall Eubanks wrote:
>> 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/+/
>>> wOBPgABQKBkYXRhOmFwcGxpY2F0aW9uL21wZWc0LW9kLWF1O2Jhc2U2NCxBVnNCS2dVZ 
>>> kF
>>> 5WUF5U0FBWlFRTklSRUJKUUFBQkpQQUFBU1R3QVlRQUVRQUFWK1FBQUZma0NBQUFBQUF 
>>> Bd
>>> 0V0QXA4REtRQmxBQVFOUUJVQUJnQUFBVitRQUFGZmtBWVFBRVFBQUx1QUFBRmZrQ0FBQ 
>>> UF
>>> BQUEwTURaVzVuBA0BBQAAyAAAAAAAAAAABgkBAAAAAAAAAAADaQACQEZkYXRhOmFwcGx 
>>> pY
>>> 2F0aW9uL21wZWc0LWJpZnMtYXU7YmFzZTY0LHdCQVNnVEFxQlcwbUVFSDhBQUFCL0FBQ 
>>> UJ
>>> 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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>>>>>
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