[Live-devel] question about sdp generation in ServerMediaSession and darwin

[Dion Galbreath]

>  >>We've been using the 2008.09. 1220313600 of live55 and everythings

>  >>been dandy. We upgraded to 2009.09.04  1252022400 and seem to have
a

>  >>problem with a darwin server. When we place the sdp file that is

>  >>created with the live555 from 2009.09.04  1252022400   we can not

>  >>connect to the stream on our darwin server. Using quicktime

>  >>player[...]

> 

>  >OK, so the obvious question now (and the only question that should

>  >concern us) is: What is different between these two SDP files (the

>  >old one that works, and the new one that doesn't)?

 

[...]

 

>> 

>>the biggest difference is in the sprop-parameter-sets= and the 

>>number ontop in the 0=-  I think the real issue is in the 

>>sprop-parameter-sets=

 

>Well, that string is derived from whatever H.264 video stream data 

>you used to generate the SDP description in the first place.  If it's 

>different between the two versions, it's because the video stream 

>data was different (i.e., had different SPS and PPS NAL units) 

>between the two. 

> 

>It's possible, though that the longer SDP 'session id' string in the 

>new "o=" line is causing Darwin problems.  The new, longer id is 

>perfectly legal, but perhaps Darwin doesn't like it.  You can test 

>this by swapping the two "o=" lines and seeing what happens.

>-- 

> 

>Ross Finlayson

>Live Networks, Inc.

>http://www.live555.com/

 

That is in fact the case. Swapping the two o lines worked..    any idea
why it might not like the longer session id?

Thanks

 

Dion

 

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