[Live-devel] RTP Timestamp problem in testMPEG1or2AudioVideo.cpp

[David BERTRAND]

Ross,

FYI, I fixed my problem by commenting the first-packet treatment in RTPSink::convertToRTPTimestamp :

RTPSink::convertToRTPTimestamp(struct timeval tv, Boolean isFirstTime) {
  // Thats IMO why RTP timestamps are not consistent when doing stopPlaying and then startplaying again !
/*  if (isFirstTime) {
    // Make the first timestamp the same as the current "fTimestampBase", so that
    // timestamps begin with the value we promised when this "RTPSink" was created:
    u_int32_t rtpTimestampIncrement = timevalToTimestamp(tv);
    fTimestampBase -= rtpTimestampIncrement;
  } */
return convertToRTPTimestamp(tv);
}

Do you think this special treatment to have first RTP timestamp sent being the value returned by random() at RTPSink creation really needed ? I think it may confuse some players when playing a file continuously, as each time a startPlaying is called, the RTP timestamp base is reduced by the value of "rtpTimestampIncrement". 

Please let me know if you find a proper way to fix my problem.
Cheers.
David. 

> > I try to run testMPEG1or2AudioVideo.cpp and to use QuickTime 
> > player to get the audio and video streams. This test program 
> > continuously reads and streams a MPEG file but when the file has 
> > ended and is reopend, my QT player is confused and cannot render 
> > the streams correctly.
> 
> This seems to be a problem with QuickTime Player.  Instead, I 
> suggest using VLC; it will continue to play the stream properly 
> after the file is reopened.
> 
> I don't think the problem (with QuickTime Player) has anything to 
> do with RTP timestamps.
> 
> 
> 	Ross Finlayson
> 	LIVE.COM
> 	<http://www.live.com/>
> 
> _______________________________________________
> live-devel mailing list
> live-devel at lists.live.com
> http://lists.live.com/mailman/listinfo/live-devel


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