[Live-devel] Why H264 annexB bytestream transported incompletely?

[Ishwar.Jasuja at jci.com]

Did you try increasing Socket send & receive buffer size & see if that 
makes any difference?

Regards,
Ishwar




Andreas F?rber <faerber at pi4.informatik.uni-mannheim.de> 
Sent by: live-devel-bounces at ns.live555.com
03/28/2008 02:17 AM
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Re: [Live-devel] Why H264 annexB bytestream transported incompletely?






Hello,

Am 28.03.2008 um 09:15 schrieb Felix:

   I have been trying to stream H264 annexB bytestream with livemedia, and 
have made little progress these days. 
   My own xH264VideoStreamFramer(subclass of H264VideoStreamFramer) and 
H264VideoFileServerMediaSubsession have been done.
 
   To check my classes, I modified live555MediaServer, and use it as the 
server while openRTSP as client for test.
 
   But when running, the bytestream cannot be transported completely. Only 
the first few datas can be received. What puzzles me more is that the 
amount of datas received is variational.
   The size of  H264 annexB bytestream file on the server is 70574 Bytes, 
sometimes the receiver can only receive the first 48KB, or sometimes 68KB. 
70574B can rarely been received completely.
 
   I also compare the data received on client with the bytestream file on 
the serever, and found that these data are just the first part of the 
bytestream.

I have been working on a H.264 annex G video stream framer. For me, the 
last access unit is not being transmitted, and I attribute this to my file 
parsing code, which by nature of the live library does not recognize the 
end of the file properly and therefore does not reach/mark the end of the 
last access unit.

Regards,

Andreas

   I checked the "fOctetCount" member of class "RTPSink", and found that 
when "MultiFramedRTPSink" call its "onSourceClosure()" function,
   live555MediaServer already sent 70574 Bytes to the client(openRTSP). 
But on the client, the data received is incomplete and variational.
 
   What might caused this problem? 
 
   Any help will be appreciated!
 
Best Regards
Felix

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