Ethereal-users: Re: [Ethereal-users] RTP Packet decoding, saving as AU desynchronized with silen

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From: Sejal Shah <sej_kapoor@xxxxxxxxx>
Date: Wed, 20 Jul 2005 21:13:46 -0700 (PDT)
Yes. Ethereal does not take care of VAD packets so
timing is messed up due to that.



--- ethereal@xxxxxxxxxxxxxxx wrote:

>  
> Is anyone here familiar with decoding and listening
> to RTP packets in
> ethereal? During silence on the call the RTP packets
> stop (I believe
> this is called voice activity detector or VAD) and
> when ethereal
> stitches the call and creates a audio file it does
> not fill in the gaps
> with silent audio so the call gets desynchronized
> and the in/out streams
> start overlapping and play out of order.
>  
> I'm capturing traffic from Cisco IP Communicator.
> VAD is only enabled on the incoming stream not the
> outgoing stream, so
> it gets especially desynchronized. 
> Thanks,
> Eric Jaakkola
>  
> p.s. Why doesn't the analyze VOIP calls find any
> voip calls in my packet
> capture?  (Even after I mark the UDP packets RTP
> packets)
> > _______________________________________________
> Ethereal-users mailing list
> Ethereal-users@xxxxxxxxxxxx
>
http://www.ethereal.com/mailman/listinfo/ethereal-users
> 


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