[Live-devel] synchronization problem&clean mpg files

[serkan bozkurt]

Hi to all,

Can anybody send me the url's of the test mpg files
that audio and video synch. problem is not seen for
livemedia libraries.
I have only a few of them.

Best Regards...


--- Ross Finlayson <finlayson at live555.com> wrote:

> 
> > > If you want to continue to use a 'guessed'
> presentation time for an
> > > elementary stream - even after
> > > "RTPSource::hasBeenSynchronizedUsingRTCP()"
> returns True, then just
> > > call "gettimeofday()".
> >
> >I'm afraid this would not work for e.g. MPEG video,
> where RTP timestamps
> >describe presentation order, but the frames are
> sent in decoding order.
> >By ignoring RTP timestamps and just calling
> gettimeofday() you'll reverse
> >the order of P and B frames...
> 
> Well, OK, if you *really* want to compute a
> 'guessed' presentation 
> time for a stream even after an accurate,
> RTCP-synchronized 
> presentation time has been made available to you,
> then you could do 
> by calling "gettimeofday()" only for the
> first-received data, and 
> thereafter adjusting it using
> "RTPSource::timestampFrequency()" and 
> "RTPSource::curPacketRTPTimestamp()".  (This is what
> the 
> "RTPSource.cpp" code already does to compute
> presentation times - see 
> lines 307-351.)
> 
> 
> 	Ross Finlayson
> 	Live Networks, Inc. (LIVE555.COM)
> 	<http://www.live555.com/>
> 
> _______________________________________________
> live-devel mailing list
> live-devel at lists.live555.com
> http://lists.live555.com/mailman/listinfo/live-devel
> 



		
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